Mary Elizabeth Hallberg Null, MD

Primary specialty

Clinical Genetics (M.D.) PhysicianTaxonomy code 207SG0201X

License

33661 Issued in NE

Practice address

982185 Nebraska Medical Ctr
Omaha, NE 68198-2185

Phone

(402) 559-4186

NPI assigned

Jun 13, 2018

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 NE

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

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mnull34227@direct.chsomaha.org
• Direct secure messaging: mnull209192@direct.nebraskamed.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.

• Unmc Physicians

  • Multi-Specialty Clinic/Center
  • Omaha, NE
  • NPI 1417912114
  Medicare reassignment NPD
• Nebraska Medical Center

  • Children's Hospital
  • Omaha, NE
  • NPI 1164641312
  NPD (past)
• Nebraska Pediatric Practice, Inc

  • Pediatrics Physician
  • Omaha, NE
  • NPI 1144556333
  NPD (past)

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

{
    "created_epoch": "1528848000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782691200000",
    "number": "1255824280",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "982185 NEBRASKA MEDICAL CTR",
            "city": "OMAHA",
            "state": "NE",
            "postal_code": "681982185"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "982185 NEBRASKA MEDICAL CTR",
            "city": "OMAHA",
            "state": "NE",
            "postal_code": "681982185",
            "telephone_number": "402-559-4186"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NULL",
        "first_name": "MARY ELIZABETH",
        "middle_name": "HALLBERG",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-06-13",
        "last_updated": "2026-06-29",
        "certification_date": "2026-06-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207SG0201X",
            "taxonomy_group": "",
            "desc": "Medical Genetics, Clinical Genetics (M.D.)",
            "state": "NE",
            "license": "33661",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nu Beginnings Treatment Foster Care
• Doh Nu
• War War Nu
• Paula Nuguid, PTA
• Nulife Health
• Kossi Sena Numadenu, MS, LMHP, PLADC
• Marie Numbahemo Leontina
• Nomshat Numrom
• Haley Nunes, APRN
• April Clarissa Nunez

• Clinical Genetics (M.D.) Physician in Omaha, NE
• Providers in Omaha, NE by specialty
• Clinical Genetics (M.D.) Physician in Nebraska

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 29, 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.