Theresa J. Grasing, P.A-C
NPI 1245757103ActiveIndividual· Physician Assistant· Annapolis, MD
Physician Assistant (P.A-C) with Medstar Medical Group - Southern Maryland LLC, practicing in Annapolis, Maryland. Their prescriptions cost Medicare Part D more than their services did: $804,210 for 1,600 claims, against $47,413 paid for services in 2024. Lilly USA, LLC was the largest of 26 companies reporting payments in 2025, $1,422 in all, mostly food and beverage. Lists Johns Hopkins Hospital, the and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1245757103 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | P.A-C |
| Sole proprietor | No |
| NPI issued | Aug 23, 2017 |
| Last updated in NPPES | Aug 18, 2026 |
| Certified by provider | Aug 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | C0006562 | MD |
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 - Physician Assistant (DC); Practitioner - Physician Assistant (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 274 |
|---|---|
| Services billed | 605 across 10 procedure codes |
| Paid by Medicare | $47,413 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,600 · 4,148 30-day fills |
|---|---|
| Patients | 227 |
| Total drug cost | $804,210 |
| Generic share | 45% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Medstar Medical Group - Southern Maryland LLCHollywood, MD · 245 clinicians
Hospital affiliations
- Johns Hopkins Hospital, theBaltimore, MD
- Luminis Health Anne Arundel Medical Center, IncAnnapolis, MD
- University of MD Shore Medical Center at EastonEaston, MD
Industry payments (Open Payments)
- 2025$1,422 · 62 payments from 26 companies
- 2024$1,300 · 62 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $254.83 | 13 |
| Amgen Inc. | $97.99 | 5 |
| Sanofi-Aventis U.S. LLC | $93.22 | 3 |
| Novo Nordisk Inc | $87.13 | 4 |
| Bayer Healthcare Pharmaceuticals Inc. | $80.39 | 3 |
What the 2025 payments were for
- Food and Beverage$1,422 · 62 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 112 physician assistants in Annapolis · All physician assistants in Maryland