DR. MARCUS S DEMPSTER MD - NPI 1881223519 - Internal Medicine in Williamsville, NY

Q: What is Marcus Dempster's NPI number?

The NPI number for Marcus Dempster is 1881223519. It was assigned to this individual provider in the NPPES registry on April 4, 2020.

Q: What is Marcus Dempster's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Marcus Dempster was last updated on June 2, 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.

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About Dr. Marcus S Dempster Md NPPES

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

DR. MARCUS S DEMPSTER MD (NPI 1881223519) is an individual hematology & oncology provider in Williamsville, New York, licensed in New York (331143) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881223519

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameDR. MARCUS S DEMPSTERCredential: MD

Location Address199 PARK CLUB LN STE 200Williamsville, NY 14221-5269

Mailing Address199 Park Club Ln Ste 500Williamsville, NY 14221-5269 · (716) 845-1300 · Fax (716) 322-3372

Phone(716) 634-3340

Fax(716) 634-3350

Sole ProprietorYes

Enumeration DateApril 4, 2020

Last NPPES UpdateJune 2, 20263 updates tracked since enumeration

NPPES CertifiedJune 2, 2026

✔ NPI 1881223519 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in NY · 331143

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

199 PARK CLUB LN STE 200, Williamsville, NY 14221

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Other Identifiers 1

Medicaid07964107NY

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. Marcus S Dempster Md 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 14221 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

$166.88 typical visit price

range $54.87 – $166.88

Typical copayment $41.72 (range $13.71 – $41.72)

Most-billed visit code 99205

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 6

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

MRS. DANIELLE RENEE PAOLINI PA

Physician Assistant