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DR. GREGORY MCARDLE WILLIAMS MD, MBA
NPI 1528761368
Internal Medicine in New York, NY

Active since March 22, 2023PECOS Enrolled
100 E 77TH ST, NEW YORK, NY 10075(212) 434-4763(212) 434-2246 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About Dr. Gregory Mcardle Williams Md, Mba NPPES

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

DR. GREGORY MCARDLE WILLIAMS MD, MBA (NPI 1528761368) is an individual internal medicine provider in New York, New York, licensed in New York (344899) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1528761368
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. GREGORY MCARDLE WILLIAMSCredential: MD, MBA
Location Address100 E 77TH STNew York, NY 10075-1850
Mailing Address622 Homestead AveScottdale, PA 15683-2700 · (724) 875-2167
Phone(212) 434-4763
Fax(212) 434-2246
Sole ProprietorYes
Medical School CMSOtherGraduated 2023
Enumeration DateMarch 22, 2023
Last NPPES UpdateJune 30, 2026
NPPES CertifiedJune 30, 2026
✔ NPI 1528761368 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 344899
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 344899 (NY)
100 E 77TH ST, New York, NY 10075
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gregory Mcardle Williams Md, Mba is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3870057219
PECOS Enrollment IDI20260716000190
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10075 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
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.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. CATHERINE WILLIAMS HALL NURSE PRACTITIONER
Nurse Practitioner (Neonatal, Critical Care)
100 E 77TH ST
NEW YORK, NY 10075
New York County (212) 434-2000
MS. PUNAM SHERPA PA
Physician Assistant
100 E 77TH ST
NEW YORK, NY 10075
New York County (646) 752-1480
MARIA PUTILINA
Student in an Organized Health Care Education/Training Program
100 E 77TH ST
NEW YORK, NY 10075
New York County (212) 434-2150
LINDA MANGERA
Student in an Organized Health Care Education/Training Program
100 E 77TH ST
NEW YORK, NY 10075
New York County (212) 434-2000
JUSTIN WAN
Student in an Organized Health Care Education/Training Program
100 E 77TH ST
NEW YORK, NY 10075
New York County (212) 434-4763
AMANDA JEAN BATTISTA PA
Physician Assistant
100 E 77TH ST
NEW YORK, NY 10075
New York County (212) 434-2000
SAGAR MULAY
Anesthesiology
100 E 77TH ST
NEW YORK, NY 10075
New York County (731) 676-2644
REBECCA SAUNDERS AGACNP
Nurse Practitioner (Acute Care)
100 E 77TH ST
NEW YORK, NY 10075
New York County (212) 434-6500

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 Gregory Williams's NPI number?

The NPI number for Gregory Williams is 1528761368. It was assigned to this individual provider in the NPPES registry on March 22, 2023.

Where is Gregory Williams located?

Gregory Williams practices at 100 E 77th St, New York, NY 10075. The listed phone number is (212) 434-4763.

What is Gregory Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gregory Williams enrolled in Medicare?

Yes. Gregory Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gregory Williams was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.