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 * Home
 * About
 * Providers
   * Pain Management
   * Anesthesiology
 * Services
   * Neck Pain
   * Back Pain
   * Sciatica
   * Spinal Stenosis
   * Nerve Pain
   * Joint Pain
   * Headaches
   * Neuropathy
   * Complex Regional Pain Syndrome
   * Motor Vehicle Accident
   * Work Injuries
   * Slip and Fall
   * Shingles
   * Shoulder Pain
   * Hip Pain
   * Knee Pain
   * Arthritis
   * Post-Surgical Pain
 * Locations
   * Union
   * Scotch Plains
   * Bloomfield
   * South Bound Brook
   * New Brunswick
   * Old Bridge
   * Woodbridge
 * Insurance
 * Testimonials
 * Career Opportunities

Contact Us
Book Online
Patient Portal
Imagine a Life Without Pain
More than just pain management, we provide relief.
Imagine a Life Without Pain
More than just pain management, we provide relief.
Imagine a Life Without Pain
More than just pain management, we provide relief.
Imagine a Life Without Pain
More than just pain management, we provide relief.
Imagine a Life Without Pain
More than just pain management, we provide relief.
Imagine a Life Without Pain
More than just pain management, we provide relief.
Imagine a Life Without Pain
More than just pain management, we provide relief.

Meet Our Doctors

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Conditions we Treat

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Office Locations

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UNION ANESTHESIA ASSOCIATES


PAIN MANAGEMENT & ANESTHESIOLOGY IN UNION, SCOTCH PLAINS, BLOOMFIELD, SOUTH
BOUND BROOK, NEW BRUNSWICK, OLD BRIDGE AND WOODBRIDGE, NJ

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Union Anesthesia Associates provides high-quality pain management to people with
acute, chronic, and severe pain. At their offices in Union, Scotch Plains,
Bloomfield, South Bound Brook, New Brunswick, Old Bridge, and Woodbridge, New
Jersey, the board-certified anesthesiologists and pain management specialists
work closely with each person to find and treat the pain’s source rather than
just masking symptoms.

At each office, you will receive a thorough evaluation, clinical exam, and
review of diagnostic tests including MRIs to diagnose the root cause of your
neck, spine, back pain, and any other ailments including headaches, nerve pain,
and joint pain.  The providers also offer comprehensive evaluations and
treatments for all headaches, including cluster headaches and chronic migraines.

The Union Anesthesia Associates team has extensive experience managing acute and
chronic pain conditions such as neck and back pain, herniated discs, sciatica,
radiculopathy, neuropathy, spinal stenosis, arthritis, complex regional pain
syndrome, joint pain, and nerve pain. They use medication management,
anti-inflammatories, muscle relaxants, injectable anesthetics, and
interventional pain management including epidural steroid injections, facet
joint injections, radiofrequency ablation, nerve blocks, spinal cord
stimulation, and minimally invasive surgery. 

The highly skilled pain management specialists treat pain conditions caused by
workplace injuries, motor vehicle accidents, and slip-and-fall events. They also
provide personalized care for pain after surgery and complications such as
failed back syndrome, postlaminectomy syndrome, adhesions, and phantom limb
syndrome.

Minimally invasive spine surgery is available for chronic back and neck pain.
Union Anesthesia Associates offers specialized procedures such as endoscopic
surgery, and rhizotomy to ease the chronic pain or injuries associated with
trauma and degenerative spine disorders. Spinal cord stimulation trials and
permanent implantations are also available.

The Union Anesthesia Associates staff maintains a friendly, welcoming
environment and offers flexible appointment times. The experienced physicians
collaborate on all aspects of patient care to ensure a high level of pain
management and the best treatment outcomes.

Call the Union Aesthetics Associates office near you today to schedule a
consultation or book an appointment online.

More
Learn More About Us


SERVICES

NECK PAIN

BACK PAIN

SCIATICA

SPINAL STENOSIS

NERVE PAIN

JOINT PAIN

HEADACHES

NEUROPATHY

COMPLEX REGIONAL PAIN SYNDROME

MOTOR VEHICLE ACCIDENT

WORK INJURIES

SLIP AND FALL

SHINGLES

SHOULDER PAIN

HIP PAIN

KNEE PAIN

ARTHRITIS

POST-SURGICAL PAIN




INSURANCE

We accept most insurance providers. If you have specific questions regarding
your coverage, please contact us for additional information.
See full list of insurance



PATIENT REVIEWS

Very professional, helpful, interested in assisting you.
(...)

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Earleen B. | Sep 06, 2023
Dr Fleshheaker keeping me moving
(...)

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Michael R. | Sep 06, 2023
Thank you for help
(...)

--------------------------------------------------------------------------------

Farouma A. | Sep 05, 2023
Experience
(...)

--------------------------------------------------------------------------------

Mildred G. | Sep 05, 2023
Both the medical tech and provider were awesome. The provider took time and was
patient answering all our questions. I will definitely recommend them to others.
(...)

--------------------------------------------------------------------------------

Ebegue O. | Sep 05, 2023
Phenomenal!!
(...)

--------------------------------------------------------------------------------

Julia T. | Sep 05, 2023
Very good! They explained it to me very well and I understood it, this helps me
with my duties!
(...)

--------------------------------------------------------------------------------

Eleazar A. | Sep 02, 2023
Dr. Fleischhacker is the most caring doctor and actually takes the time to
listen unlike most doctors. I truly believe he does this work to help people in
pain and help them recover whereas other doctors it’s all about the money. And
his staff is also so very kind and helpful. Brilliant and caring doctor in my
opinion
(...)

--------------------------------------------------------------------------------

Andrea D. | Mar 29, 2024
I have been seeing Dr Fleishhacker for a long time now. He is patience and
always concerned to find the root of my pain and his office staff and surgery
staff are ALL AWESOME !! I always feel in the best hands there.
(...)

--------------------------------------------------------------------------------

Diane K. | Feb 29, 2024
Good
(...)

--------------------------------------------------------------------------------

Niliptha B. | Feb 27, 2024
Great
(...)

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Rahim W. | Feb 26, 2024
I have been a patient of Dr. Fleischhacker’s for over 10 years. Would recommend
him!
(...)

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Tina P. | Feb 21, 2024
The doctor and the staff are great. They treat me with kindness, professionalism
and the are very knowledgeable of the practice.
(...)

--------------------------------------------------------------------------------

Penny S. | Feb 16, 2024
Dr. Fleischhacker listened, took his time explaining options. Very professional
and helpful.
(...)

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Carolyn V. | Feb 08, 2024
EXCELLENT DOCTOR
(...)

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Sheila H. | Feb 06, 2024
I had a very positive experience and would recommend the Doc.
(...)

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Robert B. | Jan 26, 2024
There great
(...)

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James B. | Jan 23, 2024
Very Profesional
(...)

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Felix V. | Jan 19, 2024
Like always union spine and pain is always there for me. I really recommend
them.
(...)

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Frank O. | Jan 17, 2024
The Doctor was very friendly. The staff was also very kind. I may revisit for
the shot the Doctor offered to have me take
(...)

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Darryl F. | Jan 17, 2024
Very good with the patients
(...)

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Ricardo S. | Jan 17, 2024
Excellent service, knowledgeable staff It's because of Dr Fleishhacker that I
can still walk and function normally!!!! I'm grateful for Dr Flieshhacker and
his staff!!!!
(...)

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Robert M. | Jan 09, 2024
OUTSTANDING!!!
(...)

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John M. | Jan 03, 2024
Nice personnel in all places there. The doctor could not be nicer. He helped me
a lot with my problem. To bad I am leaving the state but whoever needs pain
management can count on this clinic, its personnel and specially Dr.
Fleischhacker
(...)

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Alejandro L. | Dec 23, 2023
Attentive and professional
(...)

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Lisa A. | Dec 21, 2023
Always professional and courteous.
(...)

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Pamela J. | Dec 20, 2023
Excellent
(...)

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Eric H. | Dec 20, 2023
He is the best!
(...)

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Nino M. | Dec 20, 2023
(...)

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Eugenia H. | Dec 14, 2023
Nice
(...)

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Roberto A. | Dec 12, 2023
The doctor is very kind and very professional. Always tries to find the best
treatment for his patient
(...)

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Luisa G. | Dec 07, 2023
I met with nurse practitioner. She was professional and warm.
(...)

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Allison C. | Dec 06, 2023
Dr. Fleischhacker and his Staff are personable as well as professional and have
always made me feel like family. From the office as well as the surgical center.
I couldn’t ask for better treatment.
(...)

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John D. | Nov 29, 2023
Great experience very professional and had great empathy for my pain
(...)

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Alexzandr B. | Nov 22, 2023
The best experience ever
(...)

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Edward H. | Nov 21, 2023
I always have a pleasant experience. Physicians and staff are always
professional, attentive, caring and follows through.
(...)

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Denise J. | Nov 20, 2023
Great
(...)

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Dyolinda D. | Nov 18, 2023
Outstanding service. 5 stars is not enough
(...)

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Pedro H. | Nov 08, 2023
I have worked with the physicians from this group and I trust their opinions and
practice.
(...)

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Mary R. | Nov 02, 2023
Atento y amables con los pacientes y orientan y auudan a las personas que no
comprendemos el idioma
(...)

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Iraidy M. | Oct 31, 2023
The whole Staff is very nice appointments are on time. And, Staff is very nice.
(...)

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Halimah M. | Oct 25, 2023
Very professional and courteous..
(...)

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Salvatore T. | Oct 18, 2023
I've been seeing Dr. Fleischhacker for almost 10 years and he is always caring
and understanding of any and all situations, always going the extra mile to get
to the root cause of my discomfort and always listens to me.
(...)

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Michaela H. | Oct 17, 2023
Best doctor ever. Treating my lower back and neck very well. Thank you Dr
macklin
(...)

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Tinaud G. | Oct 17, 2023
Dr. Wilcenski is a phenomenal pain management doctor. He is precise and
explanatory.
(...)

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Jessica M. | Oct 17, 2023
The attention is very good.
(...)

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Marta V. | Oct 16, 2023
Great everyone was nice
(...)

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Lori M. | Oct 14, 2023
Everyone was very nice knew what they were doing
(...)

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Daniel S. | Oct 14, 2023
Good follow up, discussed possible treatment to help with pain. Gave me
additional perspective and information.
(...)

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Janelle C. | Oct 13, 2023
Dr fleshacker is great
(...)

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Wendy E. | Oct 11, 2023
Dr. Fleischhacker, a genuinely pleasant Doctor. He displayed real concern and
care. He shows regard for my pain and discomfort. He is thorough in his quest to
find the proper relief for my pain and suffering. His mission is helping me get
my life back on track. It is clear he has listened as well as explained. He
looks at you when he speaks to you, he is a Physician who is down to earth in
that way. I always leave the office knowing and feeling I have a doctor who as
my best interest at heart. AND THAT IS REFRESHING!
(...)

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Branca M. | Oct 11, 2023
Would like morning appointments for procedures at Middlesex surgery centet
(...)

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Jacqueline H. | Oct 10, 2023
The staff and Dr. Are very understanding and compassionate. They try to help you
fix the problem that you have and are willing to help you in every way possible.
(...)

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Rebecca G. | Oct 05, 2023
He is very polite and knowledgeable.
(...)

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Lilian C. | Oct 05, 2023
Very good doctor help me with my problems
(...)

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Tadeusz H. | Oct 05, 2023
Great experience
(...)

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JoAnn P. | Oct 04, 2023
He’s a very good doctor
(...)

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Flavio Q. | Oct 03, 2023
Super service and everyone is very friendly there. I speak English but they have
a number of people who are bilingual which is a great asset in a company.
(...)

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Deborah B. | Sep 29, 2023
My visits with Dr. Fleischhacker are always pleasant and informative. His office
facility is always clean and his staff are always pleasant.
(...)

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Michelle F. | Sep 28, 2023
Very efficient and pleasant staff! Dr Macklin is very patient and explains
everything
(...)

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Lisa B. | Sep 27, 2023
Good
(...)

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Calvin P. | Sep 27, 2023
Thank you guys
(...)

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Erifredo M. | Sep 27, 2023
Very good
(...)

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George P. | Sep 26, 2023
He’s really awesome great guy really good good doctor
(...)

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Geniene H. | Sep 26, 2023
Dr. Wilcenski is an excellent professional
(...)

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Luisa G. | Sep 26, 2023
Caring, compassionate and very knowledgeable.
(...)

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Adrienne F. | Sep 25, 2023
Well done job.
(...)

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Chrisnadi F. | Sep 22, 2023
I received caring and compassionate care from friendly, professional staff. I've
always gotten appointments scheduled without a long wait. There is plenty of
parking which is a big plus for me (I refuse to parallel park...lol)!
(...)

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Linda E. | Sep 22, 2023
Very, good attention
(...)

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Cynthia G. | Sep 21, 2023
Doctor Macklin does excellent work. I recommend him to anyone that has been in
the car accident. He does work with you before he releases you I give him a five
star
(...)

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Debra W. | Sep 21, 2023
As patient here they really know what they are doing professionally . Their goal
is to get you back to up and about . Highly recommend.
(...)

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Carl S. | Sep 21, 2023
Ok.
(...)

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Pius I. | Sep 20, 2023
accommodating easily understandable explanations of diagnosis provided needed
pain relief after seeing 3 or 4 other doctors.
(...)

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Gerard C. | Sep 20, 2023
Hope to be able to continue a combination of diverse treatment and remain with
Dr fleischhacker!
(...)

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Louis T. | Sep 20, 2023
Good atencion
(...)

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Susana Z. | Sep 20, 2023
Very good No complaints.
(...)

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Stephen M. | Sep 19, 2023
He is a very kind and listens to what you have to say about your pain. Also he
tries every option to help you get better
(...)

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Doreen O. | Sep 19, 2023
My visit so far has gone well . I will be having an MRI on Saturday of this week
and then we will go from there.
(...)

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Aflonse C. | Sep 18, 2023
Fantastic
(...)

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Maria C. | Sep 18, 2023
excellent
(...)

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Lisette T. | Sep 16, 2023
Dr. Macklon and his PA’s all have the same patient care professionalism that is
expected of them. They are warm and caring, they listen to you and understand
what you’re saying and at times trying to say, They comfort you in a way that no
other Medical Professional has ever done before. They say what they mean and
what they say, there were never any beating around the bush. The Management of
my pain was understood by them and handled. Thank You so much for taking care of
me.
(...)

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Felicia M. | Sep 15, 2023
Nice
(...)

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Eugenia H. | Sep 15, 2023
Friendly staff. Knowledgeable doctors.
(...)

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Davetta L. | Sep 14, 2023
everyone was so patient, kind, and caring. you could tell everyone was
knowledgeable and wanted you to feel better. i couldn’t have asked for a better
experience
(...)

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Catherine M. | Sep 14, 2023
Dr. Macklin was very thorough and explained everything in simple terms
(...)

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Robert M. | Sep 14, 2023
The dr Wilcenski is the best dr and intelligent and listen to patient very
carefully he is the best
(...)

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Kamaljit A. | Sep 14, 2023
Mi espalda esta mejorando y me siento mucho mejor
(...)

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Roque M. | Sep 14, 2023
Very comfortable place, employees are friendly.
(...)

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Angel A. | Sep 13, 2023
Very pleasant
(...)

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Miguel R. | Sep 13, 2023
Great
(...)

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Khaliff A. | Sep 13, 2023
Overall service was very good
(...)

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Adolph W. | Sep 13, 2023
Dr. Fleischhaker has been my doctor for almost 15 years. Would highly recommend.
(...)

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Tina P. | Sep 13, 2023
Thank you.
(...)

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Alfonso G. | Sep 13, 2023
Dr es muy buen médico ase dies años el me inyectó y dos de esas inyecciones me
ayudaron y ahora estoy en tratamiento con el espero que Dios lede sabiduría para
darme el tratamiento mejor
(...)

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Maria P. | Sep 13, 2023
Great!
(...)

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Mark T. | Sep 13, 2023
Dr.Joshua Macklin is a very good doctor take care me with dedication,always
recommend a treatment that you are best for me,my pain go away fell so happy
(...)

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Janet I. | Sep 13, 2023
Great practice. Caring physician, professional staff, extremely good treatments.
Will definitely use this practice again if needed.
(...)

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Joan H. | Sep 12, 2023
Very friendly and professional
(...)

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Dorothy M. | Sep 12, 2023
Always a pleasant and professional experience
(...)

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Gizele V. | Sep 12, 2023
I would recommend Union Anesthesia Associates. Dr. Wilcenski was very detail and
he answered all my questions.
(...)

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Lidia S. | Sep 11, 2023
The staff were very professional
(...)

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Chinelo O. | Sep 08, 2023
the best
(...)

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Raquel B. | Sep 07, 2023
Always a great experience
(...)

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Eric N. | Sep 07, 2023
Thank you for patience and time!
(...)

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Maryeline C. | Sep 07, 2023
Check in process is smooth. APN explained treatment course and listened.
(...)

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Teneshia B. | Sep 07, 2023
Fine my 1st visit
(...)

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Robert R. | Sep 07, 2023
Dr. Macklin is very professional, thorough & listens to his patients. He has
relieved one of my pain areas & is working on the other one. His explanations of
treatments & procedures is geared to the patients understanding & puts one at
ease before, during & after them I would highly recommend Dr. Macklin to anyone
in pain.
(...)

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Mary Z. | Sep 07, 2023
Always on time Professional staff Great doctors
(...)

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Theodore M. | Sep 07, 2023
The whole staff is knowledgeable and caring. Accommodating to everyone one's
individual needs. I would highly recommend Dr. Fleischhecker to anyone who has
back or neck issues.
(...)

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Dory L. | Sep 07, 2023
The doctor understands what pain I'm, also understanding as well
(...)

--------------------------------------------------------------------------------

Edward M. | Sep 06, 2023
Very professional, helpful, interested in assisting you.
(...)

--------------------------------------------------------------------------------

Earleen B. | Sep 06, 2023
Dr Fleshheaker keeping me moving
(...)

--------------------------------------------------------------------------------

Michael R. | Sep 06, 2023
Thank you for help
(...)

--------------------------------------------------------------------------------

Farouma A. | Sep 05, 2023
Experience
(...)

--------------------------------------------------------------------------------

Mildred G. | Sep 05, 2023
Both the medical tech and provider were awesome. The provider took time and was
patient answering all our questions. I will definitely recommend them to others.
(...)

--------------------------------------------------------------------------------

Ebegue O. | Sep 05, 2023
Phenomenal!!
(...)

--------------------------------------------------------------------------------

Julia T. | Sep 05, 2023
Very good! They explained it to me very well and I understood it, this helps me
with my duties!
(...)

--------------------------------------------------------------------------------

Eleazar A. | Sep 02, 2023
Dr. Fleischhacker is the most caring doctor and actually takes the time to
listen unlike most doctors. I truly believe he does this work to help people in
pain and help them recover whereas other doctors it’s all about the money. And
his staff is also so very kind and helpful. Brilliant and caring doctor in my
opinion
(...)

--------------------------------------------------------------------------------

Andrea D. | Mar 29, 2024
I have been seeing Dr Fleishhacker for a long time now. He is patience and
always concerned to find the root of my pain and his office staff and surgery
staff are ALL AWESOME !! I always feel in the best hands there.
(...)

--------------------------------------------------------------------------------

Diane K. | Feb 29, 2024
Good
(...)

--------------------------------------------------------------------------------

Niliptha B. | Feb 27, 2024
Great
(...)

--------------------------------------------------------------------------------

Rahim W. | Feb 26, 2024
I have been a patient of Dr. Fleischhacker’s for over 10 years. Would recommend
him!
(...)

--------------------------------------------------------------------------------

Tina P. | Feb 21, 2024
The doctor and the staff are great. They treat me with kindness, professionalism
and the are very knowledgeable of the practice.
(...)

--------------------------------------------------------------------------------

Penny S. | Feb 16, 2024
Dr. Fleischhacker listened, took his time explaining options. Very professional
and helpful.
(...)

--------------------------------------------------------------------------------

Carolyn V. | Feb 08, 2024


Union
695 Chestnut St, , Union, NJ 07083
908-851-7161
Scotch Plains
1818 E Second St, , Scotch Plains, NJ 07076
908-851-7161
Bloomfield
135 Bloomfield Ave, Suite B, Bloomfield, NJ 07003
908-851-7161
South Bound Brook
141 Main Street, , South Bound Brook, NJ 08880
908-851-7161
New Brunswick
153 Livingston Ave, , New Brunswick, NJ 08901
908-851-7161
Old Bridge
40 Route 34 South, , Old Bridge, NJ 08857
908-851-7161
Woodbridge
655 Amboy Avenue, , Woodbridge, NJ 07095
908-851-7161



Union Anesthesia Associates
✆ Phone (appointments): 908-851-7161
Average Reviews: 4.85/5
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