Ashton R Grosso, DO

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

20A19255 Issued in CA

Practice address

1595 Soquel Dr Ste 400
Santa Cruz, CA 95065-1724

Phone

(831) 475-1111

Fax

(831) 476-5020

NPI assigned

Mar 31, 2018

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

• Ashton Nielson Former name

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: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Hospitalist

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Sutter Bay Medical FoundationGroup PAC ID 4284538778, 3,783 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Sutter Care at Home Home health agency, Santa Cruz, CA, CCN 057007
• Dominican Hospital Hospital, Santa Cruz, CA, CCN 050242

Merit-based Incentive Payment System (MIPS)

Final score

99.64 of 100Reported as apm

Quality

86.27

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: agrosso617152@hisp.ehr.sutterhealth.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.

• Sutter Bay Medical Foundation

  • Multi-Specialty Clinic/Center
  • Palo Alto, CA
  • NPI 1013950807
  Medicare reassignment Care Compare group NPD
• Sutter Bay Medical Foundation

  • Multi-Specialty Clinic/Center
  • Sacramento, CA
  • NPI 1003267196

  Family Medicine

  NPD
• Sutter Bay Medical Foundation

  • Clinical Medical Laboratory
  • Santa Clara, CA
  • NPI 1669287033
  NPD
• Sutter East Bay Medical Foundation

  • Family Medicine Physician
  • Orinda, CA
  • NPI 1871538769
  NPD (past)

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

• Dignity Health

  • General Acute Care Hospital
  • Santa Cruz, CA
  • NPI 1427181007
  Care Compare affiliation
• Sutter Visiting Nurse Association and Hospice

  • Home Health Agency
  • Santa Cruz, CA
  • NPI 1063658987
  Care Compare affiliation

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

{
    "created_epoch": "1522454400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761177600000",
    "number": "1992201859",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3400 DATA DR",
            "city": "RANCHO CORDOVA",
            "state": "CA",
            "postal_code": "956707956"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1595 SOQUEL DR STE 400",
            "city": "SANTA CRUZ",
            "state": "CA",
            "postal_code": "950651724",
            "telephone_number": "831-475-1111",
            "fax_number": "831-476-5020"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1301 Mission St",
            "address_purpose": "LOCATION",
            "city": "Santa Cruz",
            "state": "CA",
            "postal_code": "950603530",
            "country_code": "US",
            "telephone_number": "831-458-6300",
            "fax_number": "831-458-6305",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GROSSO",
        "first_name": "ASHTON",
        "middle_name": "R",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-03-31",
        "last_updated": "2025-10-23",
        "certification_date": "2025-10-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A19255",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CA",
            "license": "20A19255",
            "primary": true
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "20A19255",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ASHTON",
            "last_name": "NIELSON",
            "credential": "DO",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Julie Patricia Grijalva-Bailey
• Jennifer Grippo-Galassi
• Janisa Grisom
• Abigail Mei Griswold
• Cathy Groh, LCSW
• Joscelyn Michaela Grote, LM, CPM
• Corie Michelle Grotey
• Ariel Grusky Foley
• Courtney Brianna Guadamuz
• Amanda Rose Guard

• Hospitalist Physician in Santa Cruz, CA
• Providers in Santa Cruz, CA by specialty
• Hospitalist Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 23, 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.