Dr. Mary M. Oneil, MD | Cheektowaga, NY | Rheumatology

.about .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Mary Oneil specializes in rheumatology, focusing on the diagnosis and treatment of conditions affecting joints, muscles, and connective tissues. They earned their medical degree from Saint Louis University School of Medicine and bring 36 years of experience to their practice. Dr. Oneil is fluent in English.

Dr. Oneil practices in Cheektowaga, New York, where they treat patients with various musculoskeletal concerns including joint pain and back pain in both pregnant women and younger patients. They offer comprehensive care through physical therapy and strength training programs. Patients also benefit from infusion therapy services under their care. Dr. Oneil maintains an average patient rating of 4.4 out of 5 stars.

AI-generated from data on this provider profile.

4.4

57 Ratings
36 years of experience
34 insurance plans accepted
speaks English
Saint Louis University School Of Medicine
11 written reviews
1 specialty
8 areas of expertise
1 board certification
2 office locations

57 ratings & reviews

Sort:

Showing 1 to 10 of 11 reviews

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Been a patient of Dr. O’Neil’s for many years. She is so patient and listens to my issues and is willing to find help with the horrible pain I’ve been experiencing. Her staff are wonderful, always cheerful. Nicole, RN and Kara, NP are also very helpful.

March 7th, 2019

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Extraordinary overall experience

July 31st, 2017

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Spends a lot of time with me. Treats me as a partner in my health. Staff is the same. Highly recommend.

June 9th, 2016

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. O'Neil is an excellent doctor! She is always available to talk to even if you don't have an appointment. She is patient and attentive to all you have to say. Dr. O'Neil uses what ever tools she has in her toolbox to treat you including, but not limited to, acupuncture. I have been her patient for over 17 years and have always been treated with respect and tremendous medical knowledge.

May 31st, 2016

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

She has been taking care of me for 8 years and I can't say anything negative about her.

December 1st, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Very good doctor. As a result of spending necessary time with patients usually runs late with appointments

October 19th, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I found Dr O'Neill to be a very caring and efficient physician who truly cares about her patients she is a true credit to her profession

September 23rd, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

great Dr. very easy to spend time without being rushed. Just a super attitude and great Dr.

February 26th, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. O'neil is an amazing Dr. And person. She is extremely positive and spends a lot of time with her patients.

February 4th, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Fantastic

August 14th, 2010

Rheumatology Wellness Care Of Wny

20 Losson Rd Ste 100Cheektowaga, NY 14227

Tel: (716) 898-0755

Mary Margaret Oneil Md

2355 Union RdCheektowaga, NY 14227


Dr. Mary Margaret Oneil, MD	Dr. Michael Lee Gross, MD	Noah Crowley Bourne	Christina Nichole Osborne
Rheumatology	Rheumatology	Nurse Practitioner	Nurse Practitioner
	Accepts New Patients		Accepts New Patients
4.4 (57 Ratings)	3.8 (32 Ratings)	0 (0 Ratings)	0 (0 Ratings)
36 Years of Experience	31 Years of Experience
No Virtual Visit Option	Virtual Visit Available	No Virtual Visit Option	No Virtual Visit Option
Speaks English	Speaks English, Spanish
Cheektowaga , NY	Paramus , NJ	Orchard Park , NY	Amherst , NY
Med School: Saint Louis University School Of Medicine	Med School: Sackler School Of Medicine
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Rheumatology

Arthritis
Gout
Knee Osteoarthritis
Lupus
Osteoarthritis
Osteoarthritis (Hand and Wrist)
Rheumatic Diseases
Tendinitis

EDUCATION & TRAINING

Medical School

Saint Louis University School Of MedicineGraduated in 1990

Dr. James Nelson Jarvis
Pediatrics
47 Years Exp | Oklahoma City, OK
(9)
Dr. Aditi Mimmin Shaily
Pediatrics
7 Years Exp | Charleston, SC
(0)
Dr. Michael Wayne Grisanti, MD
Rheumatology
43 Years Exp | Orchard Park, NY
(11)
Dr. Thomas B Tomasi
Allergy & Immunology
72 Years Exp | Buffalo, NY
(0)
Johnna Rae Breier
Nurse Practitioner
| Buffalo, NY
(0)
Dr. Joan Grosvenor Calkins, MD
Pediatrics
47 Years Exp | Hamburg, NY
(33)
Kathleen Jane Cloutier
Nurse Practitioner
| Williamsville, NY
(1)
Audrey Elizabeth Glover
Nurse Practitioner
| Williamsville, NY
(0)
Paula Holmes Zagrobelny
Nurse Practitioner
| East Aurora, NY
(0)
Carrie Ann Fox
Nurse Practitioner
| Buffalo, NY
(0)

Does Dr. Mary Oneil accept virtual/telehealth appointments?: Dr. Mary Oneil has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Mary Oneil's office located?: Dr. Mary Oneil's office is located at 20 Losson Rd Ste 100, Cheektowaga, NY, 14227.
Does Dr. Mary Oneil accept my insurance?: You can see the insurance plans that Dr. Mary Oneil accepts on their Vitals profile.
What languages does Dr. Mary Oneil speak?: Dr. Mary Oneil speaks English.
How can I make an appointment with Dr. Mary Oneil?: You can find contact information for Dr. Mary Oneil here on Vitals.

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.

Copyright © 2026 Vitals Consumer Services, LLC. US Patent No. 8, 694, 441. All Rights Reserved.
As more fully set forth in this website's terms of use . (1) nothing contained on or offered by or through this website should be construed as medical advice and should not be relied upon for medical diagnosis or treatment. Vitals Consumer Services, LLC ("Vitals"). the provider of this website, does not recommend or endorse any particular healthcare provider whose information or ratings appear on this website; and (2) Vitals has granted you a limited license to access and use this website for your own noncommercial use. You are not permitted to copy, reproduce, distribute, transmit, mirror, frame, scrape, extract, wrap, create derivative works of, reverse engineer, decompile or disassemble any part or aspect of this website.