William Oh M.D.
About this NPIWhat this record shows.
NPI 1598100323 is registered to William Oh M.D., a Colon & Rectal Surgery Physician practising at 16405 Sand Canyon Ave Ste 280 in Irvine, California. Colon & Rectal Surgery Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. William Oh M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2013.
Your brand here.
Medicare enrollment
This provider holds 2 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20190927001873Colorectal Surgery (Proctology)CA
- I20211025003116General SurgeryWA
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans William Oh M.D. accepts. To confirm in-network status with your specific health plan, contact William Oh M.D. directly at (949) 557-0370.
Frequently asked
Yes. NPI 1598100323 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Colon & Rectal Surgery Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (949) 557-0370.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. William Oh M.D. is a Type-1 individual NPI.