Roger Chan, M.D.
Anatomic Pathology & Clinical Pathology Physician · Los Angeles, CA
Roger Chan, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Los Angeles, California, and NPI 1811146053, issued on Sep 11, 2008. Check the license (California A98685, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Roger Chan
- Credential
- M.D.
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- A98685 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 N State St, Los Angeles, CA 90033
- Phone
- (323) 409-7148
- Enumerated
- Sep 11, 2008
- Record last updated
- Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101020000287); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2005
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →
Also registered at 1100 N State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eduardo Aceves, RNRegistered Nurse1841716305
- Ryan AcunaAmbulatory Care Registered Nurse1932692191
- Mahal AguirreAmbulatory Care Registered Nurse1508387952
- Ramsey Alhosri, MDAnatomic Pathology & Clinical Pathology Physician1447833371
- Helen AlvaAmbulatory Care Registered Nurse1295257541
- Luisa AlvarezSocial Worker1902328602
Verify Roger Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98685Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Southern California Permanente Medical GroupDowney, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roger Chan among 1,554 anatomic pathology & clinical pathology physician records in California
Roger Chan, 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 2008, is newer than 57% of them.
- NPI issued2008 · 57% of these records are older, 38% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2005 · median 2003 among the 891 with a school on file
- Record last updated2021 · 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 Los Angeles → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Nancy Barr, MDLos Angeles, CA 900331902812878
- Deborah Commins, MDLos Angeles, CA 900331801802772
- Adrian Correa, M.D.Los Angeles, CA 900331245245950
- Alexander Fedenko, MDLos Angeles, CA 900331558377424
- Kil Lee, M.D.Los Angeles, CA 900331508851726
- Lauren O'Brien, M.D.Los Angeles, CA 900331689608556
- Dariush Sahmedini, M.D.Los Angeles, CA 900331790771830
- Chandrika Seneviratne, M.D.Los Angeles, CA 900331083608731
Common questions
What is Roger Chan, M.D.'s NPI number?
Roger Chan, M.D.'s National Provider Identifier (NPI) is 1811146053, issued on Sep 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Roger Chan, M.D. located?
The NPPES record lists a practice address at 1100 N State St, Los Angeles, CA, 90033. Phone: (323) 409-7148. Providers update this record themselves, so call before visiting.
How can I verify Roger Chan, M.D.'s license?
NPPES lists California license number A98685, 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.
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.