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MARY MARGARET ONEIL MD
NPI 1598790818
Internal Medicine - Rheumatology in Cheektowaga, NY

Active since July 12, 2006PECOS EnrolledAccepts Medicare Assignment
85.97/100
CMS Quality Rating
2355 UNION RD STE 100, CHEEKTOWAGA, NY 14227(716) 898-0755(716) 898-0775 Get Directions Write a Review

NPPES record last updated: October 11, 2022. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Oct 11, 2022, Feb 17, 2016 (2 updates tracked since 2016).

About Mary Margaret Oneil Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY MARGARET ONEIL MD (NPI 1598790818) is an individual rheumatology provider in Cheektowaga, New York, licensed in New York (188049-1) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Kaleida Health, and is a graduate of Saint Louis University School Of Medicine (1990).

NPPES Registry Identity

NPI1598790818
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameMARY MARGARET ONEILCredential: MD
Location Address2355 UNION RD STE 100Cheektowaga, NY 14227-2234
Mailing Address2355 Union Rd Ste 100Cheektowaga, NY 14227-2234 · (716) 898-0755 · Fax (716) 898-0775
Phone(716) 898-0755
Fax(716) 898-0775
Sole ProprietorNo
Medical School CMSSaint Louis University School Of MedicineGraduated 1990
Enumeration DateJuly 12, 2006
Last NPPES UpdateOctober 11, 20222 updates tracked since enumeration
NPPES CertifiedOctober 11, 2022
✔ NPI 1598790818 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in NY · 188049-1
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
2355 UNION RD STE 100, Cheektowaga, NY 14227
Open in Google Maps ↗

Other Identifiers 1

Medicaid01316201NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mary Margaret Oneil Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9537292131
PECOS Enrollment IDI20100803000937
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
960 services12 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
250 services160 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
89 services74 patients
Administration of chemotherapy into vein, 1 hour or less 96413
Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.
61 services28 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
56 services37 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
32 services31 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Kaleida Health

Acute Care Hospitals · Buffalo, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330005
Location100 High StreetBuffalo, NY 14210 · Erie County
Emergency services Birthing friendly

Sisters Of Charity Hospital

Acute Care Hospitals · Buffalo, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330078
Location2157 Main StreetBuffalo, NY 14214 · Erie County
Emergency services Birthing friendly

Brooks-Tlc Hospital System, Inc

Acute Care Hospitals · Dunkirk, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330229
Location529 Central AvenueDunkirk, NY 14048 · Chautauqua County
Emergency services

Upmc Chautauqua At Wca

Acute Care Hospitals · Jamestown, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330239
Location207 Foote AvenueJamestown, NY 14701 · Chautauqua County
Emergency services Birthing friendly

Mercy Hospital Of Buffalo

Acute Care Hospitals · Buffalo, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330279
Location565 Abbott RoadBuffalo, NY 14220 · Erie County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14227 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.40 typical visit price
range $54.87 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.97/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality60.77
Improvement Activities40
Cost100

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Oneil's NPI number?

The NPI number for Mary Oneil is 1598790818. It was assigned to this individual provider in the NPPES registry on July 12, 2006.

Where is Mary Oneil located?

Mary Oneil practices at 2355 Union Rd Ste 100, Cheektowaga, NY 14227. The listed phone number is (716) 898-0755.

What is Mary Oneil's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Mary Oneil enrolled in Medicare?

Yes. Mary Oneil is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Mary Oneil affiliated with any hospitals?

According to CMS data, Mary Oneil is affiliated with Kaleida Health, Sisters Of Charity Hospital, Brooks-Tlc Hospital System, Inc, Upmc Chautauqua At Wca and Mercy Hospital Of Buffalo.

When was this NPI record last updated?

The NPPES record for Mary Oneil was last updated on October 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.