Roger E. Der, M.D.
Anatomic Pathology & Clinical Pathology Physician · Arcadia, CA
Roger E. Der, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Arcadia, California, and NPI 1558355156, issued on Sep 9, 2005. Check the license (California A65753, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Roger E. Der
- Credential
- M.D.
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- A65753 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 W Huntington Dr, Arcadia, CA 91007
- Phone
- (626) 574-3488
- Enumerated
- Sep 9, 2005
- Record last updated
- Mar 11, 2025
- Fax
- (626) 821-6934
- Medicaid ID
- 00A657530 CA
- Medicare enrollment
- Enrolled (PECOS I20060824000535); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →
Also registered at 300 W Huntington Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine Agron, NPFamily Nurse Practitioner1538685334
- Raha Akhavan, M.D.Anesthesiology Physician1477577351
- Vincent Antosz, MDInternal Medicine Physician1831150135
- Loren Ayres, M.D.Anatomic Pathology & Clinical Pathology Physician1184693301
- Apryl Jann Bacalso, PTPhysical Therapist1124525340
- Rahtna Banerjee, M.D.Anesthesiology Physician1033430855
Verify Roger E. Der in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A65753Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Pathology Associates OF ArcadiaArcadia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roger E. Der among 1,554 anatomic pathology & clinical pathology physician records in California
Roger E. Der, M.D. is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1996 · median 2003 among the 891 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in California
There are 1,554 anatomic pathology & clinical pathology physician records in California.
All 1,554 in California → Every provider in Arcadia → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Loren Ayres, M.D.Arcadia, CA 910071184693301
- William Bishop, D.O.Arcadia, CA 910071821268533
- Rania Bakkar, MDDuarte, CA 910101962613257
- Karen Chang, MDDuarte, CA 910101518924398
- Peiguo Chu, MDDuarte, CA 910101912964974
- Fang Fan, MD, PHDDuarte, CA 910101316058415
- Kate Grimm, M.D.Duarte, CA 910101487840419
- Stanley Hamilton, M.D.Duarte, CA 910101730275637
Common questions
What is Roger E. Der, M.D.'s NPI number?
Roger E. Der, M.D.'s National Provider Identifier (NPI) is 1558355156, issued on Sep 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Roger E. Der, M.D. located?
The NPPES record lists a practice address at 300 W Huntington Dr, Arcadia, CA, 91007. Phone: (626) 574-3488. Providers update this record themselves, so call before visiting.
How can I verify Roger E. Der, M.D.'s license?
NPPES lists California license number A65753, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Roger E. Der, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.