Marissa Castro Fernandez Kiemele, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

C192860 Issued in CA

Practice address

4000 Civic Center Dr Ste 200B
San Rafael, CA 94903-5232

Phone

(415) 492-3333

Fax

(415) 492-3425

NPI assigned

Mar 3, 2006

Last updated

Jul 1, 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 3

Addresses

Other names 1

• Dr. Marissa Castro Fernandez Former name

Medicare fee-for-service enrollment

Enrolled in MA, CA2 enrollments

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 2

Specialty

Family Practice

Education

Other, 1995

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Hospital & facility affiliations

• Marinhealth Medical Center Hospital, Greenbrae, CA, CCN 050360
• Southcoast Hospitals Group Hospital, Fall River, MA, CCN 220074

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Massachusetts General Physicians Organization Inc

  • Dermatology Physician
  • Boston, MA
  • NPI 1801874573
  Medicare reassignment NPD
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Medicare reassignment NPD
• Regents Univ of California UCSF

  dba UCSF Physician Group

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1124439807
  Medicare reassignment
• Camp Verde Family Health LLC

  • Family Nurse Practitioner
  • Camp Verde, AZ
  • NPI 1093908527
  NPD (past)

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

• Marin General Hospital

  • General Acute Care Hospital
  • Greenbrae, CA
  • NPI 1396725677
  Care Compare affiliation
• Southcoast Hospitals Group, Inc

  dba Tobey Hospital

  • General Acute Care Hospital
  • Wareham, MA
  • NPI 1922024835
  Care Compare affiliation

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

{
    "created_epoch": "1141344000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1144297516",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4000 CIVIC CENTER DR STE 200B",
            "city": "SAN RAFAEL",
            "state": "CA",
            "postal_code": "949035232",
            "telephone_number": "415-492-3333",
            "fax_number": "415-492-3425"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4000 CIVIC CENTER DR STE 200B",
            "city": "SAN RAFAEL",
            "state": "CA",
            "postal_code": "949035232",
            "telephone_number": "415-492-3333",
            "fax_number": "415-492-3425"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FERNANDEZ KIEMELE",
        "first_name": "MARISSA",
        "middle_name": "CASTRO",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-03-03",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MA",
            "license": "292453",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "NH",
            "license": "18726",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "C192860",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARISSA",
            "last_name": "FERNANDEZ",
            "middle_name": "CASTRO",
            "prefix": "DR.",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Catherine S Fehrmann, MD
• Shirley Feng, PHARMD
• Teresa Fennelly, LCSW
• Jennifer J Ferber, RD, CNSD
• Lindsay Ervin Ferguson Jr., MS, MFT
• Kristina Lauren Ferrante
• Elizabeth Rechel Ferreira
• Mona Collado Ferrer-Kaw, M.D.
• Suzzane Sanchez Ferrer-Mendoza, RDH
• David Clark Ferry, PHARM.D

• Family Medicine Physician in San Rafael, CA
• Providers in San Rafael, 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, 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.