Individual provider Active NPI

Melissa Anne Winkelhaus, NP

  • Nurse Practitioner
  • Napa, CA
National Provider Identifier
1609557149
Registry record updated Jun 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
95026050 Issued in CA
Practice address
2160 Jefferson St Ste 260
Napa, CA 94559-1252
Phone
(707) 259-0700
NPI assigned
Jul 27, 2023
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 25, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X 95026050 CA Primary

Addresses

Primary practice location

2160 Jefferson St Ste 260
Napa, CA 94559-1252

Mailing address

2160 Jefferson St Ste 260
Napa, CA 94559-1252
Phone (707) 259-0700

Other names 1

  • Melissa Anne Winkelhaus Former name

Medicare participation

Medicare enrollment files
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: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20240207001713 CA Practitioner - Nurse Practitioner 6406299452 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
95026050CAMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Santa Rosa Community Health Centers Current Accepting new patients
Santa Rosa Community Health Centers CurrentSince Feb 14, 2024 Accepting new patients
Santa Rosa Community Health Centers CurrentSince Feb 14, 2024 Accepting new patients
Providence Medical Foundation Past Accepting new patients

Locations

3569 Round Barn Cir
Santa Rosa, CA 95403

Organizations & group practices 4

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.

NPI Registry JSON

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

{
    "created_epoch": "1690416000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782345600000",
    "number": "1609557149",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2160 JEFFERSON ST STE 260",
            "city": "NAPA",
            "state": "CA",
            "postal_code": "945591252",
            "telephone_number": "707-259-0700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2160 JEFFERSON ST STE 260",
            "city": "NAPA",
            "state": "CA",
            "postal_code": "945591252",
            "telephone_number": "707-259-0700"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WINKELHAUS",
        "first_name": "MELISSA",
        "middle_name": "ANNE",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-07-27",
        "last_updated": "2026-06-25",
        "certification_date": "2026-06-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "95026050",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MELISSA",
            "last_name": "WINKELHAUS",
            "middle_name": "ANNE",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Napa, CA

Sources for this page

Verify at the official NPI Registry.