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DR. MARTIN W. OSTER M.D.
NPI 1518065564
Internal Medicine - Hematology & Oncology in New York, NY

Active since September 20, 2006PECOS Enrolled
161 FORT WASHINGTON AVE, NEW YORK, NY 10032(212) 305-8231(212) 305-4667 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Dr. Martin W. Oster M.d. NPPES

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

DR. MARTIN W. OSTER M.D. (NPI 1518065564) is an individual hematology & oncology provider in New York, New York, licensed in New York (114474) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1518065564
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. MARTIN W. OSTERCredential: M.D.
Location Address161 FORT WASHINGTON AVENew York, NY 10032-3729
Mailing Address161 Fort Washington AveNew York, NY 10032-3729 · (212) 305-8231 · Fax (212) 305-4667
Phone(212) 305-8231
Fax(212) 305-4667
Sole ProprietorYes
Enumeration DateSeptember 20, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1518065564 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 · 114474
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.
161 FORT WASHINGTON AVE, New York, NY 10032
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Other Identifiers 2

Medicare ID-Type Unspecified288641NY
Medicare UPINCO7834NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Martin W. Oster 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.

Medicare Billing Reassignment

Medicare enrollment records show Martin Oster reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Westchester Medical Practice, PC
31 mi
Multi-Specialty
1980 CROMPOND RD
Cortlandt Manor, NY 10567
  • Reassigned Medicare billing, New York enrollment
  • 307 clinicians in this Medicare group
NPI 1982109120 (914) 739-0087

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10032 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
$198.19 typical visit price
range $65.69 – $198.19
Typical copayment $49.54 (range $16.42 – $49.54)
Most-billed visit code 99205
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.

MAUREEN LICURSI CPNP
Nurse Practitioner (Pediatrics)
161 FORT WASHINGTON AVE, 7TH FLOOR
NEW YORK, NY 10032
New York County (212) 305-2466
BARBARA THERESE ROBBINS APRN-BC
Nurse Practitioner (Family)
161 FORT WASHINGTON AVE, ROOM 661
NEW YORK, NY 10032
New York County (212) 342-0886
VARSHA JOHN
Student in an Organized Health Care Education/Training Program
161 FORT WASHINGTON AVE
NEW YORK, NY 10032
New York County (212) 305-5221
MICHELLE BENGAL PA
Physician Assistant
161 FORT WASHINGTON AVE
NEW YORK, NY 10032
New York County (818) 614-2424
DR. NICOLA CORVAJA M.D.
Internal Medicine (Interventional Cardiology)
161 FORT WASHINGTON AVE
NEW YORK, NY 10032
New York County (212) 342-3616
RACHEL CONYBEARE N.P.
Nurse Practitioner (Adult Health)
161 FORT WASHINGTON AVE, HERBERT IRVING PAVILION ROOM # 903
NEW YORK, NY 10032
New York County (212) 305-5275
DR. SUNEETA KRISHNAREDDY MD
Internal Medicine (Gastroenterology)
161 FORT WASHINGTON AVE
NEW YORK, NY 10032
New York County (212) 305-2323
DAVID M WEINER MD
Urology
161 FORT WASHINGTON AVE, 11TH FLOOR
NEW YORK, NY 10032
New York County (212) 305-0114

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 Martin Oster's NPI number?

The NPI number for Martin Oster is 1518065564. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is Martin Oster located?

Martin Oster practices at 161 Fort Washington Ave, New York, NY 10032. The listed phone number is (212) 305-8231.

What is Martin Oster's specialty?

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

Is Martin Oster enrolled in Medicare?

Yes. Martin Oster is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Martin Oster's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Martin Oster reassigns Medicare benefits to The Westchester Medical Practice, PC (Cortlandt Manor, NY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Martin Oster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Martin Oster was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.