Sierra O'Sullivan

Primary specialty

Student in an Organized Health Care Education/Training ProgramTaxonomy code 390200000X

Practice address

50 N Perry St
Pontiac, MI 48342-2217

Phone

(248) 338-5300

NPI assigned

Apr 30, 2026

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 MI

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

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

{
    "created_epoch": "1777507200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777507200000",
    "number": "1487591186",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "50 N PERRY ST",
            "city": "PONTIAC",
            "state": "MI",
            "postal_code": "483422217",
            "telephone_number": "248-338-5300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "50 N PERRY ST",
            "city": "PONTIAC",
            "state": "MI",
            "postal_code": "483422217",
            "telephone_number": "248-338-5300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'SULLIVAN",
        "first_name": "SIERRA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-04-30",
        "last_updated": "2026-04-30",
        "certification_date": "2026-04-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "MI",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Heather Dawn Nykiel, CRNA
• Michael O'Brien, AAS, CAC-II, SST
• Megan Nicole O'Guin
• Briana Alexis O'Neal
• Bailey O'Neil, DO
• Shane O'Toole, MD
• Oakland Anesthesia Care Associates PLLC
• Oakland Community Health Network
• Oakland County Pathologists, PLC
• Oakland Digestive Disease,PLLC

• Student in an Organized Health Care Education/Training Program in Pontiac, MI
• Providers in Pontiac, MI by specialty
• Student in an Organized Health Care Education/Training Program in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 30, 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.