Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Obstetrics/Gynecology

Leah A. Kaufman, MD

Works at hospitals in Stony Brook, NY · New York

Summary

Dr. Leah A. Kaufman, MD is an OB-GYN at 100 Nicolls Rd, Stony Brook, NY 11794. Phone: (631) 444-7650. Accepts Medicare assignment. In 2024, Leah A. Kaufman had 38 Original Medicare patients and 64 services. NPI 1033289483. 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: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 100 Nicolls Rd, Stony Brook, NY 11794 · Directions
  • Phone: (631) 444‑7650
  • Medicare: Accepts Medicare assignment
  • Hospital: Suny/Stony Brook University Hospital
  • Group practice: University Associates in Obstetrics and Gynecology University Faculty
  • Medical school: State University Of Ny Upstate Medical University · graduated 1998 (28 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Leah A. Kaufman, 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 Leah A. Kaufman accept Medicare assignment?
Yes. Medicare's clinician data says Leah A. Kaufman 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 Leah A. Kaufman see?
In 2024, CMS data shows 38 Original Medicare patients and 64 services for Leah A. Kaufman. This counts Original Medicare only and measures volume, not quality.
What is Leah A. Kaufman's NPI number?
1033289483. 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 Leah A. Kaufman, 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 patients38
Services billed to Medicare64
Different services or procedures14
Participating Medicare providerYes
Average age of these patients64

Most frequent services

  1. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)16 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 cholesterol75%
  • High blood pressure68%
  • Arthritis47%
  • Anxiety42%
  • Diabetes32%
  • Depression29%

Hospitals where Leah A. Kaufman works

Medicare's Facility Affiliation Data lists Leah A. Kaufman 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 Leah A. Kaufman is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Leah A. Kaufman as a member of this group (CMS data updated October 2, 2026).

  • University Associates in Obstetrics and Gynecology University Faculty112 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in New York →

Other OB-GYNs in Stony Brook

Clinicians with the same Medicare primary specialty in Stony Brook, NY — not a recommendation.

All OB-GYNs in Stony Brook →

Other clinicians in University Associates in Obstetrics and Gynecology University Faculty

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

Clinician information

CredentialMD
Medical schoolState University Of Ny Upstate Medical University
Graduation year1998 (28 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1033289483
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