Olen Jack Haseman, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A205395 Issued in CA

Practice address

11234 Anderson St
Loma Linda, CA 92354-2804

Phone

(909) 558-4074

NPI assigned

May 9, 2023

Sex

Male

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

Not listed in the public Medicare enrollment file

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.

Specialty

Internal Medicine

Education

Other, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1683590400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1952091381",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11234 ANDERSON ST",
            "city": "LOMA LINDA",
            "state": "CA",
            "postal_code": "923542804",
            "telephone_number": "909-558-4074"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11234 ANDERSON ST",
            "city": "LOMA LINDA",
            "state": "CA",
            "postal_code": "923542804",
            "telephone_number": "909-558-4074"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HASEMAN",
        "first_name": "OLEN",
        "middle_name": "JACK",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-05-09",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A205395",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Golda Marcell Harvatin, D.O.
• Teresa Marie Harvatin, DNP, ACNP-BC
• Harvey House Manor II
• Christopher Harvey
• Mehde Jamal Hasan
• Omar Midhat Hashem, NURSE PRACTITIONER
• Ghadah Saad Hasoon
• Bassel Hassan
• Shyam Faiz Hassan
• Mohammad Reza Hassanian, M.D.

• Internal Medicine Physician in Loma Linda, CA
• Providers in Loma Linda, 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 Jul 1, 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.
• 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.