Quick answers
- Where does David E. Twardzik see patients?
- Medicare's clinician data lists 3 practice locations, including Quakertown, PA, Bethlehem, PA and Allentown, PA. Call before your visit to confirm the address.
- What is David E. Twardzik's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does David E. Twardzik accept Medicare assignment?
- Yes. Medicare's clinician data says David E. Twardzik accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for David E. Twardzik?
- (215) 538-2500, as listed in official Medicare / NPI Registry data.
- What is David E. Twardzik's NPI number?
- 1457422925. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where David E. Twardzik is enrolled with Medicare (CMS data updated 2026-10-02).
- 1445 W Broad StQuakertown, PA 18951 (215) 538‑2500
- 3933 Freemansburg AveBethlehem, PA 18020 (610) 419‑9191
- 5354 Hamilton BlvdAllentown, PA 18106 (484) 221‑9600
Group practices
Medicare enrollment lists David E. Twardzik as a member of these groups (CMS data updated 2026-10-02).
- CDC Allentown PC3 clinicians in the group
- Complete Dermatology Center PC3 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457422925 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians