Miriam P Oneil, MD

Primary specialty

Geriatric Medicine (Internal Medicine) PhysicianTaxonomy code 207RG0300X

License

82634 Issued in CT

Practice address

21 South Rd
Farmington, CT 06032-2482

Phone

(860) 679-4862

Fax

(860) 679-0123

NPI assigned

Apr 8, 2020

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in CT

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

University of Massachusetts Medical School, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

University of Connecticut Health CenterGroup PAC ID 3678472016, 624 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Masters in Home Care, LLC Home health agency, Rocky Hill, CT, CCN 077264
• John Dempsey Hospital of the University of Connect Hospital, Farmington, CT, CCN 070036

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: moneil659507@direct.ynhh.org

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.

• University of Connecticut Health Center

  • General Practice Physician
  • Farmington, CT
  • NPI 1720083769
  Medicare reassignment Care Compare group NPD
• University of Connecticut Health Center

  • Durable Medical Equipment & Medical Supplies
  • Farmington, CT
  • NPI 1104809375
  NPD
• University of Connecticut Health Center

  • Clinical Medical Laboratory
  • Farmington, CT
  • NPI 1427031293
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• John Dempsey Hospital at Solnit - South Campus

  • Psychiatric Hospital Unit
  • Middletown, CT
  • NPI 1154263713
  Care Compare affiliation
• Masters in Home Care, LLC

  • Home Health Agency
  • Rocky Hill, CT
  • NPI 1679901953
  Care Compare affiliation
• State of Connecticut

  • General Acute Care Hospital
  • Farmington, CT
  • NPI 1669466561
  Care Compare affiliation

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

{
    "created_epoch": "1586304000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757980800000",
    "number": "1679192835",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20 YORK ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103220",
            "telephone_number": "203-688-4242"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "21 SOUTH RD",
            "city": "FARMINGTON",
            "state": "CT",
            "postal_code": "060322482",
            "telephone_number": "860-679-4862",
            "fax_number": "860-679-0123"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "20 York St",
            "address_purpose": "LOCATION",
            "city": "New Haven",
            "state": "CT",
            "postal_code": "065103220",
            "country_code": "US",
            "telephone_number": "203-688-4242",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ONEIL",
        "first_name": "MIRIAM",
        "middle_name": "P",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-04-08",
        "last_updated": "2025-09-16",
        "certification_date": "2025-09-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": "CT",
            "license": "82634",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "moneil91057@direct.med.uchc.edu",
            "affiliation": "N",
            "address_1": "21 South Rd",
            "city": "Farmington",
            "state": "CT",
            "country_code": "US",
            "postal_code": "060322482",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Nicolas Olshansky, LCSW
• Jenni Olson, DMD
• Melissa R Olson, OT
• Philip Olson, MD
• One Spine at a Time
• Onewell Health Care of Connecticut, LLC
• Jennifer Ong
• Hilary C Onyiuke, MD
• Hnin Hnin Oo, M.D.
• Melanie Leigh Orr

• Geriatric Medicine (Internal Medicine) Physician in Farmington, CT
• Providers in Farmington, CT by specialty
• Geriatric Medicine (Internal Medicine) Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 16, 2025; 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.