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Dr. Mary M Koumas, D.O.

Family Medicine Physician in Lake Forest, CA · enumerated 2005 · practices at Lake Forest Medical Group, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1306838909

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Registry record

Entity type Individual (Type 1)
Name Dr. Mary M Koumas
Credential D.O.
Sex Female
Practice address 24401 Muirlands Blvd, Suite #A, Lake Forest, CA, 92630
Phone (949) 770-1950
Fax (949) 770-8599
Enumeration date Aug 19, 2005
Last updated in NPPES Dec 9, 2008

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A4402 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Mary Koumas practice?
The practice location on file with NPPES is in Lake Forest, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Koumas?
The National Provider Identifier (NPI) for Mary Koumas is 1306838909, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-12-09.