Maria Silvia Martinez-Wikefeldt, M.D.

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

A77837 Issued in CA

Practice address

18785 Brookhurst St., Suite 200
Fountain Valley, CA 92708-6738

Phone

(714) 378-5330

Fax

(657) 276-4743

NPI assigned

Mar 9, 2007

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

Electronic endpoints 1

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: smartinezwikefeldt466287@direct.memorialcare.org

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.

• Memorialcare Medical Foundation

  • Clinic/Center
  • Fountain Valley, CA
  • NPI 1205167350

  Pediatrics

  Medicare reassignment NPD
• Bristol Park Medical Group, Inc

  • Family Medicine Physician
  • Costa Mesa, CA
  • NPI 1043266760

  Pediatrics

  NPD (past)
• Children'S Hospital of Orange County

  • Children's Hospital
  • Orange, CA
  • NPI 1811080526
  NPD (past)
• Universal Care

  • Pediatrics Physician
  • Long Beach, CA
  • NPI 1376632877
  NPD (past)
• University of California Irvine

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  NPD (past)

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

{
    "created_epoch": "1173398400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781136000000",
    "number": "1164554846",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18785 BROOKHURST ST., SUITE 200",
            "city": "FOUNTAIN VALLEY",
            "state": "CA",
            "postal_code": "927086738",
            "telephone_number": "714-378-5330",
            "fax_number": "657-276-4743"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18785 BROOKHURST ST., SUITE 200",
            "city": "FOUNTAIN VALLEY",
            "state": "CA",
            "postal_code": "927086738",
            "telephone_number": "714-378-5330",
            "fax_number": "657-276-4743"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARTINEZ-WIKEFELDT",
        "first_name": "MARIA SILVIA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-03-09",
        "last_updated": "2026-06-11",
        "certification_date": "2026-06-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A77837",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://memorialcare.org/fhir/api/FHIR/R4/",
            "affiliation": "Y",
            "endpointDescription": "MemorialCare FHIR Endpoint",
            "affiliationName": "MemorialCare Medical Foundation",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "17360 Brookhurst St",
            "city": "Fountain Valley",
            "state": "CA",
            "country_code": "US",
            "postal_code": "927083720",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Marsha G Fink, MD, Inc
• Richanne Elizabeth Marshall, LMFT
• Martin J Backman MD Medical Corporation
• Elizabeth Martinez Bonifacio
• Leslie Martinez Rubio
• Christine Amanda Martinez
• Jamin Martinez
• Jennifer Martinez, BT
• Jonathan Cade Martinez
• Lourdes Elena Martinez

• Pediatrics Physician in Fountain Valley, CA
• Providers in Fountain Valley, CA by specialty
• Pediatrics Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 11, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.