Gary Grosner, M.D.
NPI 1699768283 · Specialist · Buffalo, NY
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Grosner, M.D. is a Specialist provider in Buffalo, NY (NPI 1699768283).
Provider details
- NPI number
- 1699768283
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 1657211 (NY)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
117 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 30 | $1,562 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 30 | $121 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 29 | $151 |
| Coronary Artery Bypass Using Vein Or Artery Graft, 2 Grafts33518 | 17 | $365 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 11 | $76 |
Typical Medicare-allowed amounts for these services range $76–$1,562 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,738 across 52 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-29
- Last updated
- 2015-05-07
Frequently asked questions
- What is Gary Grosner's NPI number?
- Gary Grosner's National Provider Identifier (NPI) is 1699768283, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Grosner's specialty?
- Gary Grosner is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Gary Grosner located?
- Gary Grosner's practice location on file with NPPES is 100 High St, Buffalo, NY 14203-1126.
- What is Gary Grosner's phone number?
- The practice phone number listed in the NPPES registry for Gary Grosner is (716) 859-2243.
- Does Gary Grosner accept Medicare?
- Gary Grosner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Grosner's NPI active?
- Yes — Gary Grosner's NPI (1699768283) is active in the NPPES registry as of the last update on 2015-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.