Ada M Winkielman, MD

Primary specialty

Dermatopathology PhysicianTaxonomy code 207ND0900X

License

A81078 Issued in CA

Practice address

18364 Clark St
Tarzana, CA 91356-3502

Phone

(818) 345-7122

Fax

(818) 345-7448

NPI assigned

Aug 25, 2005

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 CA

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

DermatologyAlso: Pathology

Education

Other, 1990

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Valley Dermatologic Medical Group IncGroup PAC ID 8527072651, 3 clinicians

Simi Dermatologic Medical Center, IncGroup PAC ID 5193739332, 2 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

75 of 100Reported as individual

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• Simi Dermatologic Medical Center, Inc

  • Dermatology Physician
  • Simi Valley, CA
  • NPI 1144225269

  Dermatopathology

  Medicare reassignment Care Compare group NPD
• Valley Dermatologic Medical Group, Inc

  • Dermatology Physician
  • Tarzana, CA
  • NPI 1699770719

  Dermatopathology

  Medicare reassignment Care Compare group NPD
• Dignity Health Medical Foundation

  dba Dignity Health Medical Group - Inland Empire, a service of Dignity Hea

  • Multi-Specialty Clinic/Center
  • Highland, CA
  • NPI 1053653873
  NPD (past)
• J Robert West, M.D., Inc

  dba Southern California Dermatology

  • Dermatology Physician
  • Newport Beach, CA
  • NPI 1932154788

  Dermatopathology

  NPD (past)

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

{
    "created_epoch": "1124928000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1992798870",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18364 CLARK ST",
            "city": "TARZANA",
            "state": "CA",
            "postal_code": "913563502",
            "telephone_number": "818-345-7122",
            "fax_number": "818-345-7448"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18364 CLARK ST",
            "city": "TARZANA",
            "state": "CA",
            "postal_code": "913563502",
            "telephone_number": "818-345-7122",
            "fax_number": "818-345-7448"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WINKIELMAN",
        "first_name": "ADA",
        "middle_name": "M",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-08-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ND0900X",
            "taxonomy_group": "",
            "desc": "Dermatology, Dermatopathology",
            "state": "CA",
            "license": "A81078",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Robert Willis, R.R.W.
• Kyle Nathaniel Willsey, DO
• Karina Wilson
• Michelle Wilson, B.A.
• Windows for Hope Inc
• Michael Friedrich Winkler, CCAPP RADT
• Mark J Wogahn, D.C.
• Selam Ukbamariam Woldemariam, RADT
• Laura Wolfe, SPA 2715
• Wolff & Shamsian Oral & Maxillofacial Surgery Corp

• Dermatopathology Physician in Tarzana, CA
• Providers in Tarzana, CA by specialty
• Dermatopathology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.