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Rheumatology

Ayse Bag Ozbek, MD

Works at hospitals in Stony Brook, NY · New York

Summary

Dr. Ayse Bag Ozbek, MD is a rheumatologist at 100 Nicolls Rd, Hematology, Stonybrook, NY 11794. Phone: (631) 444-7643. Accepts Medicare assignment. In 2024, Ayse Bag Ozbek had 341 Original Medicare patients and 6,983 services. NPI 1386886042. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Rheumatologist (Medicare lists Rheumatology)
  • Address: 100 Nicolls Rd, Hematology, Stonybrook, NY 11794 · Directions (1 more location)
  • Phone: (631) 444‑7643
  • Medicare: Accepts Medicare assignment
  • Hospital: Suny/Stony Brook University Hospital
  • Group practice: Stony Brook Internists University Faculty Practice Corporation
  • Medical school: graduated 2001 (25 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Ayse Bag Ozbek, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Ayse Bag Ozbek accept Medicare assignment?
Yes. Medicare's clinician data says Ayse Bag Ozbek accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Ayse Bag Ozbek see?
In 2024, CMS data shows 341 Original Medicare patients and 6,983 services for Ayse Bag Ozbek. This counts Original Medicare only and measures volume, not quality.
What is Ayse Bag Ozbek's NPI number?
1386886042. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Ayse Bag Ozbek, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients341
Services billed to Medicare6,983
Different services or procedures19
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Injection, denosumab, 1 mg (J0897)5,040 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)509 services
  3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)125 services
  4. Injection of drug or substance under skin or into muscle (96372)102 services
  5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)75 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis75%
  • Osteoporosis49%
  • Diabetes36%
  • Ischemic heart disease36%

Hospitals where Ayse Bag Ozbek works

Medicare's Facility Affiliation Data lists Ayse Bag Ozbek at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Ayse Bag Ozbek is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ayse Bag Ozbek as a member of this group (CMS data updated October 2, 2026).

  • Stony Brook Internists University Faculty Practice Corporation428 clinicians in the group

Specialties

Find other Rheumatology doctors in New York →

Other rheumatologists in New York

Clinicians with the same Medicare primary specialty in New York — not a recommendation.

All rheumatologists in New York →

Other clinicians in Stony Brook Internists University Faculty Practice Corporation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2001 (25 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1386886042
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians