Sai Oak, OD

Primary specialty

OptometristTaxonomy code 152W00000X

License

4074-35 Issued in WI

Practice address

165 N 3Rd Ave
Sturgeon Bay, WI 54235-2415

Phone

(920) 743-2020

Fax

(920) 743-9601

NPI assigned

Jun 17, 2025

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 WI

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Optometry

Education

Southern College of Optometry, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Door County Eye Associates, IncGroup PAC ID 5890706386, 4 clinicians

Practice addresses (Care Compare)

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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.

• Door County Eye Associates, Inc

  • Optometrist
  • Sturgeon Bay, WI
  • NPI 1356391718
  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1750118400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759190400000",
    "number": "1104712926",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "165 N 3RD AVE",
            "city": "STURGEON BAY",
            "state": "WI",
            "postal_code": "542352415",
            "telephone_number": "920-743-2020"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "165 N 3RD AVE",
            "city": "STURGEON BAY",
            "state": "WI",
            "postal_code": "542352415",
            "telephone_number": "920-743-2020",
            "fax_number": "920-743-9601"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OAK",
        "first_name": "SAI",
        "name_prefix": "Dr.",
        "credential": "OD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-06-17",
        "last_updated": "2025-09-30",
        "certification_date": "2025-09-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "WI",
            "license": "4074-35",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ruth Norton, CDE
• NSH Dorchester LLC
• Danielle Nyman, MSW, APSW
• Shannon O'Hern, DPT
• Colleen J O'Rourke, MD
• Kristina Ohley, PHARMD
• Jennifer K Olson, D.D.S
• Kali Jean Olson, MD, MPH
• Kelly J Oram-Rankin, OTR
• Orthopedic & Spine Therapy of Sturgeon Bay, SC

• Optometrist in Sturgeon Bay, WI
• Providers in Sturgeon Bay, WI by specialty
• Optometrist in Wisconsin

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