Marianne Ryan MD
About this NPIWhat this record shows.
NPI 1336216183 is registered to Marianne Ryan MD, a Surgery practising at 25825 Vermont Ave in Harbor City, California. Surgery is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Marianne Ryan MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Medicare enrollment
This provider holds a Medicare enrollment 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
- I20110225000341General SurgeryCA
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 Marianne Ryan MD accepts. To confirm in-network status with your specific health plan, contact Marianne Ryan MD directly at (310) 325-5111.
Frequently asked
Yes. NPI 1336216183 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Surgery 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 (310) 325-5111.
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. Marianne Ryan MD is a Type-1 individual NPI.