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ERKAN BUYUK M.D.
NPI 1558558452
Obstetrics & Gynecology - Reproductive Endocrinology in New York, NY

Active since September 25, 2007PECOS Enrolled
635 MADISON AVE FL 10, NEW YORK, NY 10022(212) 756-5777(212) 756-5770 Get Directions Write a Review

NPPES record last updated: December 26, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Erkan Buyuk M.d. NPPES

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

ERKAN BUYUK M.D. (NPI 1558558452) is an individual reproductive endocrinology provider in New York, New York, licensed in New York (002855-1) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Hartsdale.

NPPES Registry Identity

NPI1558558452
Entity TypeIndividualMale
Primary Taxonomy207VE0102X
Provider Legal NameERKAN BUYUKCredential: M.D.
Location Address635 MADISON AVE FL 10New York, NY 10022-1009
Mailing Address635 Madison Ave Fl 10New York, NY 10022-1009 · (212) 756-5777 · Fax (212) 756-5770
Phone(212) 756-5777
Fax(212) 756-5770
Sole ProprietorNo
Enumeration DateSeptember 25, 2007
Last NPPES UpdateDecember 26, 2019
✔ NPI 1558558452 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Reproductive EndocrinologyAllopathic & Osteopathic Physicians
Taxonomy Code207VE0102X
License✔ Licensed in NY · 002855-1
Definition
An obstetrician/gynecologist who is capable of managing complex problems relating to reproductive endocrinology and infertility.
635 MADISON AVE FL 10, New York, NY 10022
Open in Google Maps ↗

Secondary Practice Location 1

Location 1141 S Central AveHartsdale, NY 10530-2319 · Phone (914) 997-1060

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Erkan Buyuk 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 Erkan Buyuk reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Montefiore Medical Center
2.3 mi
Family Medicine
2633 BROADWAY
New York, NY 10025
  • Reassigned Medicare billing, New York enrollment
  • 5,251 clinicians in this Medicare group
NPI 1760288278 (888) 663-6331

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 10022 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 12

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

DR. KIMBERLEY THORNTON MD
Obstetrics & Gynecology (Reproductive Endocrinology)
635 MADISON AVE FL 10
NEW YORK, NY 10022
New York County (718) 430-4031
DIANA DESIR FNP-BC
Nurse Practitioner (Family)
635 MADISON AVE FL 10
NEW YORK, NY 10022
New York County (212) 756-5777
NATAN BAR-CHAMA M.D.
Urology
635 MADISON AVE FL 10
NEW YORK, NY 10022
New York County (212) 756-5777
JULIA DIFRANZA
Nurse Practitioner (Family)
635 MADISON AVE FL 10
NEW YORK, NY 10022
New York County (212) 756-5777
GEORGIA HOPE WITKIN PH.D.
Psychologist (Clinical)
635 MADISON AVE FL 10
NEW YORK, NY 10022
New York County (917) 414-6944
DEBRA AVIVA AHARON
Obstetrics & Gynecology (Reproductive Endocrinology)
635 MADISON AVE FL 10
NEW YORK, NY 10022
New York County (212) 756-5777
DR. TARANEH GHARIB NAZEM M.D.
Obstetrics & Gynecology (Reproductive Endocrinology)
635 MADISON AVE FL 10
NEW YORK, NY 10022
New York County (212) 756-5777
JACQUELINE NAOMI ANNENBERG NP
Nurse Practitioner (Women's Health)
635 MADISON AVE FL 10
NEW YORK, NY 10022
New York County (212) 756-5777

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 Erkan Buyuk's NPI number?

The NPI number for Erkan Buyuk is 1558558452. It was assigned to this individual provider in the NPPES registry on September 25, 2007.

Where is Erkan Buyuk located?

Erkan Buyuk practices at 635 Madison Ave Fl 10, New York, NY 10022. The listed phone number is (212) 756-5777.

What is Erkan Buyuk's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Reproductive Endocrinology, with taxonomy code 207VE0102X.

Is Erkan Buyuk enrolled in Medicare?

Yes. Erkan Buyuk is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Erkan Buyuk's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Erkan Buyuk reassigns Medicare benefits to Montefiore Medical Center (New York, 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 Erkan Buyuk'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 Erkan Buyuk was last updated on December 26, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.