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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARY ELIZABETH STOCK M.D.
NPI 1952312936
Internal Medicine in Amherst, NY

Active since August 11, 2006PECOS Enrolled
4350 MAPLE RD, AMHERST, NY 14226(716) 829-3316(716) 829-2564 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Mary Elizabeth Stock M.d. NPPES

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

DR. MARY ELIZABETH STOCK M.D. (NPI 1952312936) is an individual internal medicine provider in Amherst, New York, licensed in New York (201029) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1952312936
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARY ELIZABETH STOCKCredential: M.D.
Location Address4350 MAPLE RDAmherst, NY 14226-1027
Mailing Address4350 Maple RdAmherst, NY 14226-1027 · (716) 829-3316 · Fax (716) 829-2564
Phone(716) 829-3316
Fax(716) 829-2564
Sole ProprietorYes
Enumeration DateAugust 11, 2006
Last NPPES UpdateJuly 16, 2026
NPPES CertifiedJuly 16, 2026
✔ NPI 1952312936 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 201029
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.
4350 MAPLE RD, Amherst, NY 14226
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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. Mary Elizabeth Stock M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 14226 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.

Other Providers at the Same Location NPPES 8

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

MICHAEL PHAM PA-C
Physician Assistant
4350 MAPLE RD
BUFFALO, NY 14226
Erie County (716) 829-3316
CHARLENE ANN STALIKAS RN
Registered Nurse
4350 MAPLE RD
AMHERST, NY 14226
Erie County (716) 829-5986
ALKA CHATRATH MD
Internal Medicine
4350 MAPLE RD
AMHERST, NY 14226
Erie County (716) 829-3316
NELLY ORTA PA
Physician Assistant (Medical)
4350 MAPLE RD
AMHERST, NY 14226
Erie County (716) 829-3316
LAURA MARY MCDONALD P.A
Physician Assistant
4350 MAPLE RD
AMHERST, NY 14226
Erie County (716) 829-3316
ROSENDA BELMONTE
Physician Assistant
4350 MAPLE RD
BUFFALO, NY 14226
Erie County (716) 829-3316
JOHN ANTHONY SELLICK JR. D.O.
Internal Medicine (Infectious Disease)
4350 MAPLE RD
AMHERST, NY 14226
Erie County (716) 829-3316
MRS. JESSICA NICOLE O'BRIEN RPA-C
Physician Assistant (Medical)
4350 MAPLE RD
AMHERST, NY 14226
Erie County (716) 829-3316

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 Stock's NPI number?

The NPI number for Mary Stock is 1952312936. It was assigned to this individual provider in the NPPES registry on August 11, 2006.

Where is Mary Stock located?

Mary Stock practices at 4350 Maple Rd, Amherst, NY 14226. The listed phone number is (716) 829-3316.

What is Mary Stock's specialty?

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

Is Mary Stock enrolled in Medicare?

Yes. Mary Stock is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mary Stock was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days 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.