NPIMap

Individual provider Active NPI

Melissa Hansen Ambrosio, PA-C

  • Physician Assistant
  • Ventura, CA
National Provider Identifier
1871837872
Registry record updated May 11, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
22711 Issued in CA
Practice address
300 Hillmont Ave
Ventura, CA 93003-1651
Phone
(805) 652-6556
NPI assigned
Nov 15, 2012
Last updated
May 11, 2023By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 11, 2023

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X 22711 CA Primary
Medical Physician Assistant 363AM0700X 22711 CA
Surgical Physician Assistant 363AS0400X 22711 CA

Addresses

Primary practice location

300 Hillmont Ave
Ventura, CA 93003-1651

Mailing address

800 S Victoria Ave, L4615
Vchca - Physician Services
Ventura, CA 93009-0003
Phone (805) 677-5181

Other names 1

  • Melissa Elizabeth Hansen Former name

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address melissa.ambrosio@ventura.cernerdirect.com Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20121217000393 CA Practitioner - Physician Assistant 1557513769 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Community Memorial Health SystemGroup PAC ID 9537155676, 187 clinicians
County of VenturaGroup PAC ID 7911810171, 340 clinicians

Practice addresses (Care Compare)

120 N Ashwood Ave
Ventura, CA 93003-1810
Phone (805) 658-5800

300 Hillmont Ave
Ventura, CA 93003-1651

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
86.02 of 100Reported as group
Quality
64.51
Promoting interoperability
100
Improvement activities
40
Cost
72.21

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
22711CAMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
County of Ventura CurrentSince Aug 19, 2020 Accepting new patients
Community Memorial Health System CurrentSince Feb 20, 2026 Accepting new patients
County of Ventura Current Accepting new patients
Community Memorial Health System CurrentSince Feb 20, 2026 Accepting new patients
County of Ventura CurrentSince Aug 19, 2020 Accepting new patients
County of Ventura Current Accepting new patients
County of Ventura PastSince Jun 16, 2024 Accepting new patients
Pacific Central Coast Health Centers Past Accepting new patients
Central California Faculty Medical Group, Inc. Past Accepting new patients

Locations

422 Arneill Rd
Ste B
Camarillo, CA 93010
Phone (805) 383-4510

1202 Maricopa Hwy
Ste A
Ojai, CA 93023
Phone (805) 640-2323

2921 Saviers Rd
Oxnard, CA 93033
Phone (805) 487-5588

325 W Channel Islands Blvd
Oxnard, CA 93033
Phone (805) 204-9500

845 N 10th St
Ste 3
Santa Paula, CA 93060
Phone (805) 525-0215

120 N Ashwood Ave
Ventura, CA 93003
Phone (805) 658-5800

138 W Main St
Ste E
Ventura, CA 93001
Phone (805) 667-2850

147 N Brent St
Ventura, CA 93003
Phone (805) 652-5011

300 Hillmont Ave
Ventura, CA 93003
Phone (805) 652-6000

300 Hillmont Ave
Bldg 340
Ventura, CA 93003
Phone (805) 652-6100

5855 Olivas Park Dr
Ventura, CA 93003
Phone (805) 652-5469

800 S Victoria Ave
#L4615
Ventura, CA 93009
Phone (805) 677-5181

800 S Victoria Ave
#L4640
Ventura, CA 93009

Interoperability endpoints

  • FHIR API: https://fhir-myrecord.cerner.com/r4/8cf1bb66-7b18-4eaa-b641-538f19feb923/
  • Direct secure messaging: mambrosio17031@valleychildrens-prd.direct-ci.com
  • Direct secure messaging: melissa.ambrosio@ventura.cernerdirect.com

Organizations & group practices 10

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.

Hospital & facility affiliations 12

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

NPI Registry JSON

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

{
    "created_epoch": "1352937600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1683763200000",
    "number": "1871837872",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "800 S VICTORIA AVE, L4615",
            "address_2": "VCHCA - PHYSICIAN SERVICES",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930090003",
            "telephone_number": "805-677-5181",
            "fax_number": "805-677-5304"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 HILLMONT AVE",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930031651",
            "telephone_number": "805-652-6556"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AMBROSIO",
        "first_name": "MELISSA",
        "middle_name": "HANSEN",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2012-11-15",
        "last_updated": "2023-05-11",
        "certification_date": "2023-05-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "22711",
            "primary": true
        },
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "CA",
            "license": "22711",
            "primary": false
        },
        {
            "code": "363AS0400X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Surgical",
            "state": "CA",
            "license": "22711",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "melissa.ambrosio@ventura.cernerdirect.com",
            "affiliation": "N",
            "endpointDescription": "Cerner Direct Secure Email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Direct Information",
            "address_1": "300 Hillmont Ave",
            "city": "Ventura",
            "state": "CA",
            "country_code": "US",
            "postal_code": "930031651",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "MELISSA",
            "last_name": "HANSEN",
            "middle_name": "ELIZABETH",
            "credential": "PA-C",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Ventura, CA

Sources for this page

Verify at the official NPI Registry.