Mary Umahi Obasi Olomu, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A185215 Issued in CA

Practice address

269 Campus Dr # Mc5151
Stanford, CA 94305-5101

Phone

(650) 723-2300

NPI assigned

Nov 15, 2017

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

Other names 1

• Dr. Mary Umahi Obasi Former 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)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1510704000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768348800000",
    "number": "1982117628",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "269 CAMPUS DR # MC5151",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943055101"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "269 CAMPUS DR # MC5151",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943055101",
            "telephone_number": "650-723-2300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OLOMU",
        "first_name": "MARY",
        "middle_name": "UMAHI OBASI",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-11-15",
        "last_updated": "2026-01-14",
        "certification_date": "2026-01-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A185215",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARY",
            "last_name": "OBASI",
            "middle_name": "UMAHI",
            "prefix": "DR.",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Derick Okwan-Duodu, M.D.,PH.D.
• Cornelius Olcott IV, M.D.
• Hilary A Oleon, LCSW
• Jean-Marc Olivot, MD, PHD
• Eric Peter Ollila, MD
• Cameron Russell Olsen, MD
• Kathryn D Olson, PA-C
• Nichole Olson, PHD
• Niels Halden Olson, MD
• Julie Kristina Olsson, MD

• Internal Medicine Physician in Stanford, CA
• Providers in Stanford, 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 Jan 14, 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.