Adam Theodore Gerstenblith, MD
NPI 1265654875ActiveIndividual· Ophthalmology, Retina Specialist· Hagerstown, MD
Ophthalmology, Retina Specialist (MD) in Hagerstown, Maryland, trained at Johns Hopkins University School of Medicine (class of 2007). In 2024 Medicare paid $5,022,456 for 1,566 patients, and Part D covered 275 of their prescriptions, 56% of them generic. Ani Pharmaceuticals, Inc. reported $31.74 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1265654875 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 3, 2007 |
| Last updated in NPPES | Dec 6, 2021 |
| Certified by provider | Dec 6, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology, Retina Specialist Primary | 207WX0107X | D0075032 | MD |
| Internal Medicine | 207R00000X | 21124 | MD |
| Ophthalmology, Retina Specialist | 207WX0107X | MD442919 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (MD); Practitioner - Ophthalmology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,566 |
|---|---|
| Services billed | 88,251 across 41 procedure codes |
| Paid by Medicare | $5,022,456 |
Part D prescriptions in 2024
| Prescriptions (claims) | 275 · 391 30-day fills |
|---|---|
| Patients | 125 |
| Total drug cost | $14,140 |
| Generic share | 56% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Ophthalmology |
Medical group
- Robert E Parnes MD LLCFrederick, MD · 4 clinicians
Hospital affiliation
- Meritus Medical CenterHagerstown, MD
Industry payments (Open Payments)
- 2025$31.74 · 1 payment from 1 company
- 2024$73.08 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ani Pharmaceuticals, Inc. | $31.74 | 1 |
What the 2025 payments were for
- Food and Beverage$31.74 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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