Nathan Sungmin Koh, PA-C
Physician Assistant · Fontana, CA
Nathan Sungmin Koh, PA-C is a physician assistant with a practice address in Fontana, California, and NPI 1346113651, issued on Sep 24, 2025. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nathan Sungmin Koh
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 17051 Sierra Lakes Pkwy Ste 102, Fontana, CA 92336
- Phone
- (909) 428-1800
- Enumerated
- Sep 24, 2025
- Record last updated
- Feb 12, 2026
- Medicare enrollment
- Enrolled (PECOS I20260526003852); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Nathan Sungmin Koh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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 Emergency MedicineNorco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Sungmin Koh among 14,451 physician assistant records in California
Nathan Sungmin Koh, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 93% of them.
- NPI issued2025 · 93% of these records are older, 3% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2025 · median 2018 among the 7,214 with a school on file
- Record last updated2026 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
97 physician assistant records list a practice address in Fontana
They are 97 of the 3,012 NPPES records with a practice address in Fontana, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Fontana → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Martha Ajca, P.A.CFontana, CA 923361396175758
- Yaw Asamoah, PA-CFontana, CA 923361083917439
- Khristine Marie Bueno, PA-CFontana, CA 923361811356439
- Giuliana Cilliani, PA-CFontana, CA 923361043504913
- Lauren Crostic, PA-CFontana, CA 923361215385448
- Natalie Herrera, PA-CFontana, CA 923361407237498
- Emanuel Jean-Pierre, PA-CFontana, CA 923361649306457
- Michelle Laksana, PA-CFontana, CA 923361851709414
Common questions
What is Nathan Sungmin Koh, PA-C's NPI number?
Nathan Sungmin Koh, PA-C's National Provider Identifier (NPI) is 1346113651, issued on Sep 24, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Sungmin Koh, PA-C located?
The NPPES record lists a practice address at 17051 Sierra Lakes Pkwy Ste 102, Fontana, CA, 92336. Phone: (909) 428-1800. Providers update this record themselves, so call before visiting.
How can I verify Nathan Sungmin Koh, PA-C's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
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.