Ryan M. Zimmerman, M.D.
NPI 1164659645ActiveIndividual· Orthopaedic Surgery· Lutherville, MD
Orthopaedic Surgery (M.D.) in Lutherville, Maryland, trained at Johns Hopkins University School of Medicine (class of 2009). 760 Medicare patients in 2024, $267,293 paid; nearly all of their 141 Part D prescriptions were generic (99%). Depuy Synthes Sales Inc. was the largest of 5 companies reporting payments in 2025, $411.13 in all, mostly food and beverage.
Overview
| NPI | 1164659645 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 11, 2009 |
| Last updated in NPPES | Sep 12, 2023 |
| Certified by provider | Sep 12, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | D0079107 | MD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hand Surgery (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 760 |
|---|---|
| Services billed | 2,875 across 125 procedure codes |
| Paid by Medicare | $267,293 |
Part D prescriptions in 2024
| Prescriptions (claims) | 141 · 143 30-day fills |
|---|---|
| Patients | 102 |
| Total drug cost | $605.97 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Hand Surgery |
| Secondary specialties | Orthopedic Surgery |
Medical groups
- Medstar Medical Group II LLCWashington, DC · 3,767 clinicians
- Agape Physical Therapy and Sports Rehabilitation LPForest Hill, MD · 678 clinicians
- Greater Chesapeake Hand Specialists, P.A.Lutherville, MD · 10 clinicians
Hospital affiliation
- Medstar Union Memorial HospitalBaltimore, MD
Industry payments (Open Payments)
- 2025$411.13 · 6 payments from 5 companies
- 2024$678.82 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Depuy Synthes Sales Inc. | $212.81 | 2 |
| Supreme Orthopedic Systems, LLC | $127.27 | 1 |
| Integrity Orthopaedics, Inc. | $32.18 | 1 |
| Checkpoint Surgical, Inc | $30.47 | 1 |
| Orthofix Medical, Inc. | $8.40 | 1 |
What the 2025 payments were for
- Food and Beverage$411.13 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Orthopaedic Surgery providers in Lutherville
- 1932551421
- 1629032917
- 1780631861
- 1720077514
- 1467401018
- 1588606628
- 1245790195