Quick answers
- Does Lisa A. Gelman Koessler accept Medicare assignment?
- Medicare's clinician data says Lisa A. Gelman Koessler may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Lisa A. Gelman Koessler see?
- In 2024, CMS data shows 18 Original Medicare patients and 48 services for Lisa A. Gelman Koessler. This counts Original Medicare only and measures volume, not quality.
- What is Lisa A. Gelman Koessler's NPI number?
- 1518163419. 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 Lisa A. Gelman Koessler, 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 patients | 18 |
|---|---|
| Services billed to Medicare | 48 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)13 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 pressure61%
Practice locations
Addresses where Lisa A. Gelman Koessler is enrolled with Medicare (CMS data updated October 2, 2026).
- 4575 Main St, Suite 1Amherst, NY 14226 (716) 633‑4575
Group practices
Medicare enrollment lists Lisa A. Gelman Koessler as a member of this group (CMS data updated October 2, 2026).
- Buffalo Obgyn LLP8 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Amherst
Clinicians with the same Medicare primary specialty in Amherst, NY — not a recommendation.
Other clinicians in Buffalo Obgyn LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Buffalo School Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1518163419 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians