DR. STEPHEN SEONGEUN KOH M.D., PH.D.
NPI 1003057316
Pathology - Anatomic Pathology & Clinical Pathology in Anaheim, CA
About Dr. Stephen Seongeun Koh M.d., Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEPHEN SEONGEUN KOH M.D., PH.D. (NPI 1003057316) is an individual anatomic pathology & clinical pathology provider in Anaheim, California, licensed in California (A98501) and active in the NPI registry since March 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Stephen Seongeun Koh M.d., Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Stephen Koh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Anaheim, CA 92807
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1396287082 (California)
- 13,921 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92806 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ANAHEIM, CA 92806
ANAHEIM, CA 92806
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Stephen Koh's NPI number?
The NPI number for Stephen Koh is 1003057316. It was assigned to this individual provider in the NPPES registry on March 16, 2009.
Where is Stephen Koh located?
Stephen Koh practices at 3440 E La Palma Ave Kaiser Anaheim, Dept Of Pathology, Anaheim, CA 92806. The listed phone number is (714) 644-6160.
What is Stephen Koh's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Stephen Koh enrolled in Medicare?
Yes. Stephen Koh is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Stephen Koh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Koh reassigns Medicare benefits to Southern California Permanente Medical Group (Anaheim, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Stephen Koh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Stephen Koh was last updated on February 10, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Stephen Seongeun Koh, M.D., PH.D. · NPI 1003057316
Anatomic Pathology & Clinical Pathology physician in Anaheim, California. Individual provider, active in the CMS NPPES registry since March 16, 2009.
## Identity
- **NPI:** 1003057316 (Entity type: Individual)
- **Enumerated:** March 16, 2009
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** A98501 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3440 E LA PALMA AVE, KAISER ANAHEIM, DEPT OF PATHOLOGY, Anaheim, CA 92806-2020
- **Phone:** (714) 644-6160
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Southern California Permanente Medical Group (NPI 1952333460, Anaheim, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** February 10, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1003057316) · Data from the CMS NPPES public registry.