Joanna Diel-Martin, NP

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

95012708 Issued in CA

Practice address

1179 N McDowell Blvd
Petaluma, CA 94954-6559

Phone

(707) 559-7500

Fax

(707) 559-7620

NPI assigned

Sep 17, 2019

Last updated

May 22, 2026By the provider in NPPES

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

Other names 1

• Joanna Diel Professional name

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

Specialty

Nurse Practitioner

Education

Other, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Petaluma Health Center IncGroup PAC ID 9133180375, shared by 8 NPIs, 76 clinicians

Coastal Health AllianceGroup PAC ID 7315919933, 40 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Petaluma Valley Hospital Hospital, Petaluma, CA, CCN 050136
• Providence Santa Rosa Memorial Hospital Hospital, Santa Rosa, CA, CCN 050174

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

Practice roles

Interoperability endpoints

• Direct secure messaging: jdielmartin614056@direct.ochin.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• One Medical Group, Inc.

  dba One Medical Group

  • Family Medicine Physician
  • San Francisco, CA
  • NPI 1467781641
  Medicare reassignment
• Petaluma Health Center Inc

  dba Petaluma Health Center

  • Federally Qualified Health Center (FQHC)
  • Petaluma, CA
  • NPI 1588656268
  NPD (past)
• Petaluma Health Center Inc

  dba Rohnert Park Health Center

  • Federally Qualified Health Center (FQHC)
  • Rohnert Park, CA
  • NPI 1669870739
  NPD (past)
• SRM Alliance Hospital Services

  dba Petaluma Valley Hospital

  • Skilled Nursing Facility
  • Petaluma, CA
  • NPI 1770703886
  NPD (past)

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

• Norcal Healthconnect LLC

  dba Petaluma Valley Hospital

  • General Acute Care Hospital
  • Petaluma, CA
  • NPI 1235162645
  Care Compare affiliation
• St. Joseph Health Northern California, LLC

  dba Providence Santa Rosa Memorial Hospital

  • General Acute Care Hospital
  • Santa Rosa, CA
  • NPI 1134152549
  Care Compare affiliation

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

{
    "created_epoch": "1568678400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779408000000",
    "number": "1932759461",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 EMBARCADERO CTR STE 1900",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941113723"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1179 N MCDOWELL BLVD",
            "city": "PETALUMA",
            "state": "CA",
            "postal_code": "949546559",
            "telephone_number": "707-559-7500",
            "fax_number": "707-559-7620"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2145 University Ave",
            "address_purpose": "LOCATION",
            "city": "Berkeley",
            "state": "CA",
            "postal_code": "947041025",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DIEL-MARTIN",
        "first_name": "JOANNA",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-09-17",
        "last_updated": "2026-05-22",
        "certification_date": "2026-05-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "95012708",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "JOANNA",
            "last_name": "DIEL",
            "credential": "NP",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

• Alaknanda Devaskar, PT
• Diana Diaz, NP
• Alexander Michael Dibartolo
• Laurie A. Dibble, MD
• Nakia Dickens
• Amy Dilena, D.C.
• Lee Diles
• William S Diles Jr.
• Michael Paul Dinubila
• Laura Ruth Disharoon, MS, RD

• Nurse Practitioner in Petaluma, CA
• Providers in Petaluma, CA by specialty
• Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 22, 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.