Margaret F May, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

8691 Issued in WI

Practice address

600 N Westhaven Dr
Oshkosh, WI 54904-6926

Phone

(920) 237-5600

Fax

(920) 237-5601

NPI assigned

Nov 25, 2025

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

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: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Thedacare, IncorporatedGroup PAC ID 1759294887, 654 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Thedacare Regional Med Ctr - Neenah Hospital, Neenah, WI, CCN 520045

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

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.

• Thedacare, Incorporated

  • Family Medicine Physician
  • New London, WI
  • NPI 1376656959
  Medicare reassignment Care Compare group NPD
• Thedacare Medical Center - Berlin, Inc.

  • Critical Access Hospital
  • Berlin, WI
  • NPI 1760413777
  NPD (past)

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

• Thedacare Regional Medical Center - Neenah, Inc.

  • General Acute Care Hospital
  • Neenah, WI
  • NPI 1023472842
  Care Compare affiliation
• Thedacare Regional Medical Center - Neenah, Inc.

  • General Acute Care Hospital
  • Menasha, WI
  • NPI 1720434806
  Care Compare affiliation
• Thedacare Regional Medical Center-Neenah, Inc.

  • General Acute Care Hospital
  • Neenah, WI
  • NPI 1518993880
  Care Compare affiliation
• Thedacare Regional Medical Center-Neenah, Inc.

  • General Acute Care Hospital
  • Oshkosh, WI
  • NPI 1861943409
  Care Compare affiliation
• Thedcare Regional Medical Center - Neenah, Inc.

  • General Acute Care Hospital
  • Oshkosh, WI
  • NPI 1679937494
  Care Compare affiliation

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

{
    "created_epoch": "1764028800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773619200000",
    "number": "1629930045",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3 NEENAH CTR",
            "city": "NEENAH",
            "state": "WI",
            "postal_code": "549563070",
            "telephone_number": "920-830-5900",
            "fax_number": "920-830-5910"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 N WESTHAVEN DR",
            "city": "OSHKOSH",
            "state": "WI",
            "postal_code": "549046926",
            "telephone_number": "920-237-5600",
            "fax_number": "920-237-5601"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAY",
        "first_name": "MARGARET",
        "middle_name": "F",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-11-25",
        "last_updated": "2026-03-16",
        "certification_date": "2026-03-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "WI",
            "license": "8691-23",
            "primary": false
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "WI",
            "license": "8691",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Olivia McKeever Matwiejczyk
• Hayden Matz, OD
• Diamond Matzke, PTA
• Amitoj Kaur Mavi, DDS
• Michelle Rutz Maxwell
• Mollie C May, APNP
• Tayler Mayefski, RD
• Ann M Mayer, NP
• Catherine Mayer, DO
• Dena M Mayer, RD

• Physician Assistant in Oshkosh, WI
• Providers in Oshkosh, WI by specialty
• Physician Assistant in Wisconsin

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