Donald S. Diefendorf, PA-C
Donald S. Diefendorf, PA-C is a Physician Assistant in Baltimore, Maryland. Qualified in 1998, 28 years ago. Practices with Wellspan Medical Group, a 2,342-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Maryland and Pennsylvania.
- Years since qualifying
- 28
- Licensed in
- MD, PA
- In the registry since
- 2006
- Specialties on file
- 2
What do these letters mean?
- PA-C — Physician Assistant, Certified
- A physician assistant who holds current national certification.
Practice location Address checks out
2700 Quarry Lake Dr Ste 300Baltimore, MD 21209
Phone: (410) 377-8900
Fax: (410) 377-0576
Show map & directions
Directions in Google Maps · Apple Maps · OpenStreetMap
Pin is approximate — placed at the ZIP-code centre, not the exact door.
Additional practice locations (1)
- 1227 Baltimore St, Hanover, PA 17331-4406 — (717) 812-2055
Specialties & licences
| Medical Physician Assistant (primary) | Taxonomy 363AM0700X · Licence MA002841L (PA) |
|---|---|
| Medical Physician Assistant | Taxonomy 363AM0700X · Licence C0002134 (MD) |
Record details
| NPI number | 1437187002 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | PA-C |
| Sole proprietor | No |
| NPI enumerated | June 30, 2006 |
| Last updated in NPPES | December 5, 2025 |
| Certification date | December 5, 2025 |
Medicare enrollment
| Medicare specialty | PHYSICIAN ASSISTANT |
|---|---|
| Medical school | OTHER |
| Graduated | 1998 (28 years in practice) |
| Group practice | Wellspan Medical Group — 2342 clinicians |
| Accepts Medicare assignment | Yes — accepts the Medicare-approved amount |
| Telehealth | Offers telehealth services |
| Practice locations | 4 on file with Medicare |
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