Stephen Seongeun Koh, M.D., PH.D.
Anatomic Pathology & Clinical Pathology Physician · Anaheim, CA
Stephen Seongeun Koh, M.D., PH.D. is an anatomic pathology & clinical pathology physician with a practice address in Anaheim, California, and NPI 1003057316, issued on Mar 16, 2009. Check the license (California A98501, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen Seongeun Koh
- Credential
- M.D., PH.D.
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- A98501 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3440 E LA Palma Ave, Anaheim, CA 92806
- Phone
- (714) 644-6160
- Enumerated
- Mar 16, 2009
- Record last updated
- Feb 10, 2022
- Medicare enrollment
- Enrolled (PECOS I20111007000216); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →
Also registered at 3440 E LA Palma Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Abrantes, MDNeonatal-Perinatal Medicine Physician1861438889
- David Alvarez, MDDiagnostic Radiology Physician1255448924
- Marithel Arambulo, MSN RNC-OB PHNRegistered Nurse1174329551
- Salli AzizHospitalist Physician1841720604
- Ricardo Bardales MendozaInternal Medicine Physician1801103130
- Sharrise Boop, MSWSocial Worker1134643489
Verify Stephen Seongeun Koh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98501Check 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 GroupAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Seongeun Koh among 1,554 anatomic pathology & clinical pathology physician records in California
Stephen Seongeun Koh, M.D., PH.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 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 33% 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 updated2022 · 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 Anaheim → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Jason Scapa, M.D.Anaheim, CA 928061982099230
- David Huebner-Chan, MDAnaheim, CA 928071134290190
- Mark Janssen, MDAnaheim, CA 928071407923345
- Greg Marganian, MDAnaheim, CA 928071558561134
- Jana Pindur, MDAnaheim, CA 928071003983008
- Asma Quddusi, MDAnaheim, CA 928071477612133
- Visesh RavikumarAnaheim, CA 928071053949206
- Ali Ali, M.D.Anaheim, CA 928041598786113
Common questions
What is Stephen Seongeun Koh, M.D., PH.D.'s NPI number?
Stephen Seongeun Koh, M.D., PH.D.'s National Provider Identifier (NPI) is 1003057316, issued on Mar 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Seongeun Koh, M.D., PH.D. located?
The NPPES record lists a practice address at 3440 E LA Palma Ave, Anaheim, CA, 92806. Phone: (714) 644-6160. Providers update this record themselves, so call before visiting.
How can I verify Stephen Seongeun Koh, M.D., PH.D.'s license?
NPPES lists California license number A98501, 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.