James Dana Leo, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

61337 Issued in AZ

Practice address

810 Ainsworth Dr
Prescott, AZ 86301-1612

Phone

(928) 463-6831

Fax

(866) 342-0292

NPI assigned

Mar 14, 2007

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

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.

Opted out of Medicare

Yes, effective Feb 3, 2016 through Feb 3, 2028

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: james.leo@497514710630404.direct.elationemr.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.

• James Leo, M.D., PLLC

  • Internal Medicine Physician
  • Prescott, AZ
  • NPI 1972221430
  NPD (past) Authorized official
• James D. Leo, M.D., Inc.

  • Internal Medicine Physician
  • Long Beach, CA
  • NPI 1407989247
  NPD
• Premier Medical Care, Inc.

  • Internal Medicine Physician
  • Long Beach, CA
  • NPI 1952434250
  NPD (past)

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

{
    "created_epoch": "1173830400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771632000000",
    "number": "1730212010",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 11689",
            "city": "PRESCOTT",
            "state": "AZ",
            "postal_code": "863041689",
            "telephone_number": "928-463-6831",
            "fax_number": "866-342-0292"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "810 AINSWORTH DR",
            "city": "PRESCOTT",
            "state": "AZ",
            "postal_code": "863011612",
            "telephone_number": "928-463-6831",
            "fax_number": "866-342-0292"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEO",
        "first_name": "JAMES",
        "middle_name": "DANA",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-03-14",
        "last_updated": "2026-02-21",
        "certification_date": "2026-02-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G49243",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "G49243",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "AZ",
            "license": "61337",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Christopher Cox Legler, PT
• Keturah Legler, CPNP
• Martin Joseph Leidinger, M.D.
• Raymond Walter Lemberg, PHD
• Sally Ann Lemberg, MSW
• Frederick David Leonard, M.D.
• Zachary Randolph Leonard, PA-C
• Cydney Lesniak
• Deborah Karen Lessard, O.T.
• Maya Lessen, NP-C

• Internal Medicine Physician in Prescott, AZ
• Providers in Prescott, AZ by specialty
• Internal Medicine Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 21, 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; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.