Roger E Der, M.D.
Roger E Der is a Anatomic Pathology & Clinical Pathology Physician provider (Pathology) practicing in Arcadia, CA, registered in the NPPES registry with NPI 1558355156 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1558355156 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Roger E Der |
| Credential | M.D. |
| Sex | Male |
| Practice address | Arcadia, CA, 91007 |
| Phone | 6265743488 |
| Fax | 6268216934 |
| Enumeration date | 2005-09-09 |
| Last updated in NPPES | 2025-03-11 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician | Primary | A65753 | CA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00A657530 | Medicaid | CA | — |
Copy-ready billing details
Provider: Roger Der, M.D. NPI: 1558355156 Taxonomy: 207ZP0102X (Anatomic Pathology & Clinical Pathology Physician) Address: Arcadia, CA, 91007
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1508851288 | Usc Arcadia Hospital | Organization | General Acute Care Hospital | Arcadia, CA |
| 1164410593 | Usc Arcadia Hospital | Organization | Rehabilitation Hospital Unit | Arcadia, CA |
| 1891783239 | Methodist Hospital of Southern California | Organization | Skilled Nursing Facility | Arcadia, CA |
| 1417947557 | Hoa Vu | Individual | Pharmacist | Arcadia, CA |
| 1255302097 | Wilson Wong | Individual | Diagnostic Radiology Physician | Arcadia, CA |
| 1184693301 | Loren Ayres | Individual | Anatomic Pathology & Clinical Pathology Physician | Arcadia, CA |
| 1629047808 | Arcadia Pathology Medical Group | Organization | Anatomic Pathology & Clinical Pathology Physician | Arcadia, CA |
| 1023077930 | Natalie Mills | Individual | Cytopathology Physician | Arcadia, CA |
Verify this record
Cross-check NPI 1558355156 against the authoritative CMS record: view Roger E Der on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
What is the NPI number for Roger Der?
Where does Roger Der practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-03-11.