Steve S. Koh, MD
Urology Physician · Lancaster, CA
Steve S. Koh, MD is a urology physician with a practice address in Lancaster, California, and NPI 1922102052, issued on Sep 11, 2006. Check the license (California C39635, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Steve S. Koh
- Credential
- MD
- Primary taxonomy
- Urology Physician 208800000X
- License number
- C39635 CA
Self-reported in NPPES; status is on the state search - Practice location
- 44105 15TH St W, Lancaster, CA 93534
- Phone
- (661) 949-3006
- Enumerated
- Sep 11, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (661) 949-8700
- Medicaid ID
- GR0076830 CA
- Entity
- Type 1 · individual
8 nearest urology physician records → All 1,524 in California → Look up another NPI →
Also registered at 44105 15TH St W
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Robinson, NURSE PRACTITIONERWomen's Health Nurse Practitioner1942423553
Verify Steve S. Koh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C39635Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Steve S. Koh among 1,524 urology physician records in California
Steve S. Koh, MD is one of 1,524 urology physician records with a practice address in California. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 51% newer
- In a Medicare fileNo · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208800000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in California
There are 1,524 urology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,524 in California → Every provider in Lancaster → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- Pedram Aram, M.DLancaster, CA 935341730510579
- Fornati Bedell, M.D.Lancaster, CA 935341700203346
- Rendel Houston, MDLancaster, CA 935341457344350
- Michael Lao, M.D.Lancaster, CA 935341164861969
- Barry Buffman, MDQuartz Hill, CA 935361356480016
- Tawfik Hadaya, MDPalmdale, CA 935511780797902
- Eugene Rajaratnam, M.D.Palmdale, CA 935511386739027
- Clayton Davis, DOBishop, CA 935141164927927
Common questions
What is Steve S. Koh, MD's NPI number?
Steve S. Koh, MD's National Provider Identifier (NPI) is 1922102052, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steve S. Koh, MD located?
The NPPES record lists a practice address at 44105 15TH St W, Lancaster, CA, 93534. Phone: (661) 949-3006. Providers update this record themselves, so call before visiting.
How can I verify Steve S. Koh, MD's license?
NPPES lists California license number C39635, 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. 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.