John K Derderian, DO
Individual provider Active NPI Internal Medicine Physician · Lancaster, PA
NPI 1477595445 · NPPES record last updated Nov 1, 2025
Key facts
- NPI
- 1477595445
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Internal Medicine Physician 207R00000X
- License
- OS011857 (PA)
- Practice address
- 555 N Duke St
Lancaster, PA 17602-2250 - Phone
- (717) 544-5511
- NPI assigned
- Jun 12, 2006
- Sex
- Male
- Sole proprietor
- No
Organizations & group practices 33
Hospital & facility affiliations 3
Medicare Care Compare profile
- Specialty
- Internal Medicine
- Education
- Philadelphia College of Osteopathic Medicine, 2000
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Lancaster General Hospital
Practice addresses (Care Compare)
555 N Duke St
Lancaster, PA 17602-2250
Hospital & facility affiliations
- Lancaster General Hospital
Merit-based Incentive Payment System (MIPS)
- Final score
- 84.71 of 100
- Quality
- 73.34
- Promoting interoperability
- 97
- Improvement activities
- 40
- Cost
- 78.18
Medicare participation
- Medicare fee-for-service enrollment
- Enrolled in PA
- Eligible to order & refer
- Part B services: Yes · DME: Yes · Home health: Yes · Power mobility devices: Yes · Hospice: Yes
Medicare enrollment records
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20040513000583 | PA | Practitioner - Internal Medicine |
7113917089 | Reassigns benefits to 6 organizations |
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Doctor of Osteopathy, Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| OS011857 | PA | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Tower Health Medical Group | Current |
Accepting new patients | |
| Phoenixville Clinic Company LLC | Current |
Accepting new patients | |
| Pottstown Clinic Company LLC | Internal Medicine | Current |
Accepting new patients |
| Chestnut Hill Clinic Company, LLC | Current |
Accepting new patients | |
| Chestnut Hill Clinic Company, LLC | Internal Medicine | Current |
Accepting new patients |
| Reading Hospital | Current | Accepting new patients | |
| Reading Hospital | Current |
Accepting new patients | |
| Reading Hospital | Current |
Accepting new patients | |
| Tower Health Medical Group | Current |
Accepting new patients | |
| Lancaster General Hospital | Current |
Accepting new patients | |
| Phoenixville Clinic Company LLC | Current | Accepting new patients | |
| Phoenixville Clinic Company LLC | Current |
Accepting new patients | |
| Lancaster General Hospital | Internal Medicine | Current |
Accepting new patients |
| Tower Health Medical Group | Internal Medicine | Current | Accepting new patients |
| Lancaster General Medical Group | Past | Accepting new patients | |
| Central Montgomery Medical Center LLC | Past | Accepting new patients | |
| Lancaster Medical Group, LLC | Internal Medicine | Past | Accepting new patients |
| Lancaster General Hospital | Past | Accepting new patients | |
| Lancaster Hma Physician Management, LLC | Internal Medicine | Past | Accepting new patients |
Locations
555 N Duke St
Lancaster, PA 17602
Phone (717) 544-5945
8835 Germantown Ave
Philadelphia, PA 19118
Phone (215) 248-8227
140 Nutt Rd
Phoenixville, PA 19460
Phone (610) 983-1000
1600 E High St
Pottstown, PA 19464
Phone (610) 327-7485
730 S Hanover St
Pottstown, PA 19465
Phone (610) 323-6835
201 Reeceville Rd
West Brandywine, PA 19320
Phone (215) 788-2285
301 S 7th Ave
Ste 130
West Reading, PA 19611
Phone (610) 988-4630
420 S 5th Ave
West Reading, PA 19611
Phone (484) 628-3637
206 S 6th Ave
West Reading, PA 19611
Phone (484) 628-5437
6 Spruce St
West Reading, PA 19611
Phone (484) 628-8269
8200 Flourtown Ave
Ste 2
Wyndmoor, PA 19038
Phone (215) 836-5100
2610 Keiser Blvd
Wyomissing, PA 19610
Phone (484) 628-9127
Interoperability endpoints
- https://api.platform.athenahealth.com/1606/brand/1/csg/101/fhir/r4
- jderderian271200@direct-lghealth.org
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | OS011857 | PA | Yes |
Addresses
Primary practice location
555 N Duke St
Lancaster, PA 17602-2250
Mailing address
555 N Duke St
Lancaster, PA 17602-2250
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 100820028 | Medicaid | PA |
Other providers in Lancaster, PA
- Craig K Depoe
- Mary Elizabeth Depoe
- Ellen Michelle Depoy
- Hannah Heisinger Deppen
- Kathryn M Deprimo
- Dermasurgery Center, P.C.
- Dermatologist of Lancaster LLC
- Dermatology Associates of Lancaster, LTD
- Dermatology Physicians Inc
- Dermatology Physicians Inc
All providers in Lancaster, PA · Internal Medicine Physician in Pennsylvania
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Nov 1, 2025. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
- Order and Referring (CMS).
- Medicare Care Compare provider data (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.