Giancarlo Pasquale Dimassa, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

A81063 Issued in CA

Practice address

817 S Madison Ave
Pasadena, CA 91106-4404

Phone

(310) 753-0885

Fax

(626) 696-3210

NPI assigned

Jun 6, 2006

Last updated

Jul 10, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 2

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

Emergency Medicine

Education

University of California, Geffen School of Medicine, 2001

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

ContinuemGroup PAC ID 7911302955, 13 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence Holy Cross Medical Center Hospital, Mission Hills, CA, CCN 050278

Merit-based Incentive Payment System (MIPS)

Final score

96.69 of 100Reported as group

Quality

90

Improvement activities

40

Cost

78.43

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.fhirpoint.open.allscripts.com/fhirroute/open/10665844

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.

• Continuem

  • Urgent Care Clinic/Center
  • Lakewood, CA
  • NPI 1336716489
  Medicare reassignment Care Compare group NPD
• Cep America - California

  dba Vituity

  • Emergency Medicine Physician
  • Santa Ana, CA
  • NPI 1548667843
  Medicare reassignment NPD
• Columbia Emergency Medical Group Inc

  • Emergency Medicine Physician
  • Long Beach, CA
  • NPI 1871551119
  Medicare reassignment NPD
• Cep America - California

  dba Vituity

  • Emergency Medicine Physician
  • West Covina, CA
  • NPI 1346614054
  NPD
• Cep America-California

  • Emergency Medicine Physician
  • Murrieta, CA
  • NPI 1588552848
  NPD
• Michael C Hoaglin, MD, Inc

  dba Gut Feelings Psychosomatic Medicine

  • Psychosomatic Medicine Physician
  • Oakland, CA
  • NPI 1558954545
  NPD
• Continuem

  • Urgent Care Clinic/Center
  • Lakewood, CA
  • NPI 1578228987
  NPD (past)

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

• Providence Health System - Southern California

  dba Providence Holy Cross Medical Center

  • General Acute Care Hospital
  • Mission Hills, CA
  • NPI 1477587632
  Care Compare affiliation

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

{
    "created_epoch": "1149552000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752105600000",
    "number": "1255370797",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "817 S MADISON AVE",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911064404",
            "telephone_number": "310-753-0885",
            "fax_number": "626-696-3210"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "817 S MADISON AVE",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911064404",
            "telephone_number": "310-753-0885",
            "fax_number": "626-696-3210"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DIMASSA",
        "first_name": "GIANCARLO",
        "middle_name": "PASQUALE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-06",
        "last_updated": "2025-07-10",
        "certification_date": "2025-07-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A81063",
            "primary": true
        },
        {
            "code": "2083B0002X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Obesity Medicine",
            "state": "CA",
            "license": "A81063",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A810630",
            "state": "CA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHIELD",
            "identifier": "00A810630",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Todd B Dietrick, M.D.
• William Robert Dietrick, MD
• Gina Joanne Digiovanni, N.P.
• Diligent Home Health Care Agency
• Hildy S. Dimarzio, PSY.D., LCSW
• Luis Dimen, M.D.
• Lesley Anne Tordilla Dimson, COTA/L
• Paul Hai Vu Dinh, P.T.
• America Dinsmore, LMFT
• Caroline Anne Dionisio

• Emergency Medicine Physician in Pasadena, CA
• Providers in Pasadena, CA by specialty
• Emergency Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 10, 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.