Individual provider Active NPI

Melissa Marie Calliham, P.A-C

  • Physician Assistant
  • Foothill Ranch, CA
National Provider Identifier
1790725687
Registry record updated May 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
PA18137 Issued in CA
Practice address
26672 Portola Pkwy Ste 100
Foothill Ranch, CA 92610-1773
Phone
(949) 557-0710
NPI assigned
Jun 8, 2006
Last updated
May 29, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 29, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X PA18137 CA Primary

Addresses

Primary practice location

26672 Portola Pkwy Ste 100
Foothill Ranch, CA 92610-1773

Mailing address

2100 Powell Street
Ste 920
Emeryville, CA 94608-1803
Phone (510) 350-2600

Other practice location 1

1 Hoag Dr
Newport Beach, CA 92663-4162
Phone (949) 764-8372

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20060113000901 CA Practitioner - Physician Assistant 0840214052 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare

Merit-based Incentive Payment System (MIPS)

Final score
100 of 100Reported as group
Quality
96.39
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
18137CAMDSpeech-Language Pathologist
PA18137CAMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Cep America-California CurrentSince May 1, 2008 Accepting new patients
Cep America - California CurrentSince May 1, 2008 Accepting new patients
Cep America - California Past Accepting new patients
HMTS, Inc PastSince Aug 5, 2024 Accepting new patients
Hoag Clinic PastSince Sep 1, 2021 Accepting new patients

Locations

751 Medical Center Ct
#1182
Chula Vista, CA 91911

400 N Pepper Ave
Colton, CA 92324
Phone (909) 580-1400

9920 Talbert Ave
Fountain Vly, CA 92708
Phone (714) 236-4000

12601 Garden Grove Blvd
Garden Grove, CA 92843
Phone (714) 537-5160

1601 Cummins Dr
Ste D
Modesto, CA 95358
Phone (510) 851-7423

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/10944/brand/3/csg/1/fhir/r4
  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

Organizations & group practices 8

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.

NPI Registry JSON

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

{
    "created_epoch": "1149724800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780012800000",
    "number": "1790725687",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2100 POWELL STREET",
            "address_2": "STE 920",
            "city": "EMERYVILLE",
            "state": "CA",
            "postal_code": "946081803",
            "telephone_number": "510-350-2600",
            "fax_number": "510-879-9100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "26672 PORTOLA PKWY STE 100",
            "city": "FOOTHILL RANCH",
            "state": "CA",
            "postal_code": "926101773",
            "telephone_number": "949-557-0710"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 Hoag Dr",
            "address_purpose": "LOCATION",
            "city": "Newport Beach",
            "state": "CA",
            "postal_code": "926634162",
            "country_code": "US",
            "telephone_number": "949-764-8372",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CALLIHAM",
        "first_name": "MELISSA",
        "middle_name": "MARIE",
        "credential": "P.A-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-08",
        "last_updated": "2026-05-29",
        "certification_date": "2026-05-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "PA18137",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Foothill Ranch, CA

Sources for this page

Verify at the official NPI Registry.