Rikki Bass Mullen, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A138706 Issued in CA

Practice address

200 UCLA Medical PLZ Ste 420
Los Angeles, CA 90095-8344

Phone

(310) 319-4141

NPI assigned

Apr 25, 2014

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

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

Specialty

Internal Medicine

Education

Other, 2010

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

The Regents of the University of CaliforniaGroup PAC ID 1355248584, 1,426 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• The Regents of the University of California

  dba UCLA Dept of Medicine

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1235107566
  Medicare reassignment Care Compare group NPD
• The Regents of the University of California

  dba UCLA Dept of Medicine

  • Ambulatory Surgical Clinic/Center
  • Valencia, CA
  • NPI 1689200305
  NPD
• UCLA Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1043427248
  NPD (past)

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

{
    "created_epoch": "1398384000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765497600000",
    "number": "1306266622",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5767 W CENTURY BLVD STE 400",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900455631"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 UCLA MEDICAL PLZ STE 420",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900958344",
            "telephone_number": "310-319-4141"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MULLEN",
        "first_name": "RIKKI",
        "middle_name": "BASS",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-04-25",
        "last_updated": "2025-12-12",
        "certification_date": "2025-12-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A138706",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Angela Mull
• Brendan Robert Mull, MD
• John Dennis Mull, MD MPH
• Patrice Ann Mullany, NURSE PRACTITIONER
• Raymond Mullen, DPT
• Tiffani Elizabeth Mullen, OTR/L
• Wendy Mullen, MSW LCSW
• Benjamin Muller
• Jenny H. Muller, M.D
• Kaitlyn Muller, MA, OTR/L

• Internal Medicine Physician in Los Angeles, CA
• Providers in Los Angeles, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 12, 2025; 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.