Gary Alan Zimmerman, M.D.
NPI 1265458152ActiveIndividual· Neurological Surgery· New Haven, CT
Neurological Surgery (M.D.) in New Haven, Connecticut, trained at State University of New York Downstate Medical Center (class of 1990). 219 Medicare patients in 2024, $80,003 paid; all of their 98 Part D prescriptions were generic. Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $463.06 in all, mostly food and beverage.
Overview
| NPI | 1265458152 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 14, 2006 |
| Last updated in NPPES | Jul 1, 2024 |
| Certified by provider | Jul 1, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | 035901 | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurosurgery (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 219 |
|---|---|
| Services billed | 606 across 59 procedure codes |
| Paid by Medicare | $80,003 |
Part D prescriptions in 2024
| Prescriptions (claims) | 98 · 104 30-day fills |
|---|---|
| Patients | 53 |
| Total drug cost | $442.92 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Neurosurgery |
Medical groups
- Yale UniversityNew Haven, CT · 2,645 clinicians
- Rehabilitation Associates IncFairfield, CT · 529 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Yale-New Haven HospitalNew Haven, CT
Industry payments (Open Payments)
- 2025$463.06 · 9 payments from 2 companies
- 2024$344.14 · 8 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $295.62 | 8 |
| Si-Bone, Inc. | $167.44 | 1 |
What the 2025 payments were for
- Food and Beverage$463.06 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other neurosurgeons in New Haven
- 1073594487
- 1184147795
- 1194107375
- 1265616726
- 1326314568
- 1457595035
- 1659387256
- 1851566228
- 1154584142
- 1053696187
- 1053724880
- 1205010261
All 31 neurosurgeons in New Haven · All neurosurgeons in Connecticut