Gwenervere Louise Flagg, M.D.

Primary specialty

General Practice PhysicianTaxonomy code 208D00000X

License

G42472 Issued in CA

Practice address

231 W Vernon Ave
Suite 204
Los Angeles, CA 90037-2700

Phone

(323) 234-9595

Fax

(323) 234-9588

NPI assigned

May 26, 2006

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Addresses

Other identifiers 1

Other names 1

• Ms. Gwen Flagg Other name

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

Flagged The directory lists this NPI on an HHS exclusion list. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

State licenses

Practice roles

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: gwenervere.flagg.1@12484.direct.athenahealth.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Cedars-Sinai Medical Center

  • General Acute Care Hospital
  • Los Angeles, CA
  • NPI 1639172372
  NPD (past)
• Premier Healthcare Medical Group

  • Family Medicine Physician
  • Los Angeles, CA
  • NPI 1043451446
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1148601600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1548216674",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 91177",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900091177",
            "telephone_number": "323-234-9595",
            "fax_number": "323-234-9588"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "231 W VERNON AVE",
            "address_2": "SUITE 204",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900372700",
            "telephone_number": "323-234-9595",
            "fax_number": "323-234-9588"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FLAGG",
        "first_name": "GWENERVERE",
        "middle_name": "LOUISE",
        "name_prefix": "Ms.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-26",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "204F00000X",
            "taxonomy_group": "",
            "desc": "Transplant Surgery",
            "state": "CA",
            "license": "G42472",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "G42472",
            "primary": false
        },
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "CA",
            "license": "G42472",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G424720",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "GWEN",
            "last_name": "FLAGG",
            "prefix": "MS.",
            "credential": "M.D.",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

• Fixyou Ortho, LLC
• Winifred Lloyd Flach, LMFT
• Emily Frank Flack, OTR/L
• Flag Home Health Care, Inc.
• Flag Transportation Inc
• Mitchell Ellis Flagg
• Heather L Flaherty, MD
• Molly Melinda Flaherty, B.A.
• Roxanne Maria Flaherty
• Ofra Flaks

• General Practice Physician in Los Angeles, CA
• Providers in Los Angeles, CA by specialty
• General Practice Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.