Dr. Gerard John Diefes, MD
Dr. Gerard John Diefes, MD is a Pulmonary Disease in Wynnewood, Pennsylvania. Graduated from Hahnemann University College of Medicine in 1992, 34 years ago. Practices with Advocare, LLC, a 385-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Pennsylvania.
- Years since qualifying
- 34
- Trained at
- Hahnemann University College of Medicine
- Licensed in
- PA
- In the registry since
- 2005
- Specialties on file
- 3
What do these letters mean?
- MD — Doctor of Medicine
- A physician who completed allopathic medical school.
Practice location Address checks out
1001 City Line Ave Wb 113Wynnewood, PA 19096-3902
Phone: (610) 896-0280
Fax: (610) 896-0286
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)
- 736 W Lincoln Hwy, Exton, PA 19341-2547 — (610) 359-5858
Specialties & licences
| Pulmonary Disease Physician (primary) | Taxonomy 207RP1001X · Licence MD056949L (PA) |
|---|---|
| Critical Care Medicine (Internal Medicine) Physician | Taxonomy 207RC0200X · Licence MD056949L (PA) |
| Sleep Medicine (Internal Medicine) Physician | Taxonomy 207RS0012X · Licence MD056949L (PA) |
Record details
| NPI number | 1417948951 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | MD |
| Sole proprietor | No |
| NPI enumerated | November 3, 2005 |
| Last updated in NPPES | May 20, 2025 |
| Certification date | May 20, 2025 |
Medicare enrollment
| Medicare specialty | PULMONARY DISEASE |
|---|---|
| Also practises | CRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE, SLEEP MEDICINE |
| Medical school | HAHNEMANN UNIVERSITY COLLEGE OF MEDICINE |
| Graduated | 1992 (34 years in practice) |
| Group practice | Advocare, Llc — 385 clinicians |
| Accepts Medicare assignment | Yes — accepts the Medicare-approved amount |
| Telehealth | Offers telehealth services |
| Practice locations | 3 on file with Medicare |