Maria Fernanda Fleming Diaz, MD

Primary specialty

Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X

License

10518 Issued in NE

Practice address

7710 Mercy Rd Ste 202
Omaha, NE 68124-2353

Phone

(402) 280-4792

NPI assigned

Nov 21, 2022

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

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, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Interoperability endpoints

• Direct secure messaging: maria.fleming.diaz.1@18107.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.

• Union Community Health Center, Inc.

  • Clinic/Center
  • Bronx, NY
  • NPI 1437255155
  Medicare reassignment

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

{
    "created_epoch": "1668988800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786147200000",
    "number": "1942919659",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7710 MERCY RD STE 202",
            "city": "OMAHA",
            "state": "NE",
            "postal_code": "681242353",
            "telephone_number": "402-280-4792"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7710 MERCY RD STE 202",
            "city": "OMAHA",
            "state": "NE",
            "postal_code": "681242353",
            "telephone_number": "402-280-4792"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "260 E 188th St",
            "address_purpose": "LOCATION",
            "city": "Bronx",
            "state": "NY",
            "postal_code": "104585302",
            "country_code": "US",
            "telephone_number": "718-220-2020",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FLEMING DIAZ",
        "first_name": "MARIA",
        "middle_name": "FERNANDA",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2022-11-21",
        "last_updated": "2026-08-08",
        "certification_date": "2026-08-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "NE",
            "license": "10518",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "341582",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mariah B Fleischman, MD
• John Fleischmann
• Mark H Fleisher, MD
• Jessica M Fleissner, APRN
• Ana Rosa Fleitas Lopez
• Dominique Fleming
• Elizabeth Roseanna Fleming
• Jashanti Fleming
• Marionna Shapre Kearia Fleming
• Mary Fleming

• Endocrinology, Diabetes & Metabolism Physician in Omaha, NE
• Providers in Omaha, NE by specialty
• Endocrinology, Diabetes & Metabolism Physician in Nebraska

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 8, 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.