Holly Oemke Madarash

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

7344 Issued in CT

Practice address

5 Perryridge Rd
Greenwich, CT 06830-4697

Phone

(203) 863-3000

NPI assigned

Oct 22, 2025

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other names 1

• Holly Oemke Former name

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: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

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.

• Greenwich Hospital

  • General Acute Care Hospital
  • Greenwich, CT
  • NPI 1609846088
  Medicare reassignment

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

{
    "created_epoch": "1761091200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761091200000",
    "number": "1619844776",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 PACE PLZ",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100381598"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5 PERRYRIDGE RD",
            "city": "GREENWICH",
            "state": "CT",
            "postal_code": "068304697",
            "telephone_number": "203-863-3000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OEMKE MADARASH",
        "first_name": "HOLLY",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-10-22",
        "last_updated": "2025-10-22",
        "certification_date": "2025-10-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Physician Assistant",
            "state": "CT",
            "license": "7344",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "HOLLY",
            "last_name": "OEMKE",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Jessica O'Brien, P.A.
• Tara O'Connor, PTA
• Keira Joy O'Reilly, PA
• Sean Christopher O'Rourke
• Chelsea Marie Oarr, RD
• Oetting Stebbins Physical Therapy
• William Andrew Oetting, PT
• Robert Ray Ogle, PHD
• William K Oh, M.D.
• Catalina Olea, NP-C

• Physician Assistant in Greenwich, CT
• Providers in Greenwich, CT by specialty
• Physician Assistant in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 22, 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.