Iun-Iu A. Chen, D.O.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

252070 Issued in MA

Practice address

1179 N McDowell Blvd
Petaluma, CA 94954-0002

Phone

(707) 559-7500

Fax

(707) 559-7620

NPI assigned

Jun 4, 2012

Last updated

Jul 1, 2025By 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

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

Family Practice

Education

Rutgers New Jersey Medical School, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Petaluma Health Center IncGroup PAC ID 9133180375, 76 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

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ichen613911@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.

• Petaluma Health Center Inc

  dba Petaluma Health Center

  • Federally Qualified Health Center (FQHC)
  • Petaluma, CA
  • NPI 1588656268
  Medicare reassignment Care Compare group NPD
• Petaluma Health Center Inc

  dba Rohnert Park Health Center

  • Federally Qualified Health Center (FQHC)
  • Rohnert Park, CA
  • NPI 1669870739
  NPD
• Petaluma Health Center, Inc

  dba Casa Grande High School Health Clinic

  • Federally Qualified Health Center (FQHC)
  • Petaluma, CA
  • NPI 1437918406
  NPD
• Providence Medical Foundation

  • Family Medicine Physician
  • Brea, CA
  • NPI 1871607762
  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": "1338768000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751328000000",
    "number": "1114288412",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "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"
        },
        {
            "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": "949540002",
            "telephone_number": "707-559-7500",
            "fax_number": "707-559-7620"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHEN",
        "first_name": "IUN-IU",
        "middle_name": "A.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2012-06-04",
        "last_updated": "2025-07-01",
        "certification_date": "2025-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MA",
            "license": "252070",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Frank Chao, O.D.
• David Allen Chappell, M.D.
• Ashley Chavez
• Sunny T Chavez, CNA, MA
• Randell J. Cheek, MFT
• Mina Chen, OD
• Richard D Chen, MD
• Lauryn Chenoweth
• Cheryl Cherney, MT
• Derrick Cheroti

• Family Medicine Physician in Petaluma, CA
• Providers in Petaluma, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 1, 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.