Individual provider Active NPI

Sean Patrick Hennessey, MD

  • Family Medicine Physician
  • Vallejo, CA
National Provider Identifier
1750342242
Registry record updated Oct 8, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
A02736 Issued in CA
Practice address
100 Hospital Dr
#304
Vallejo, CA 94589-2580
Phone
(707) 643-6483
Fax
(707) 643-3028
NPI assigned
Apr 1, 2006
Last updated
Oct 8, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 8, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X A02736 CA Primary

Addresses

Primary practice location

100 Hospital Dr
#304
Vallejo, CA 94589-2580

Mailing address

10470 Old Placerville Rd Ste 100
Sacramento, CA 95827-2539
Phone (800) 470-0071

Other practice location 1

1100 Rose Dr Ste 140
Benicia, CA 94510-3623
Phone (707) 247-4900

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: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20080524000083 CA Practitioner - Family Practice 4486617446 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Other, 1985
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Sutter Valley Medical FoundationGroup PAC ID 9830094515, 2,473 clinicians

Practice addresses (Care Compare)

100 Hospital Dr
Vallejo, CA 94589-2580
Phone (707) 551-3600

2702 Low CT
Fairfield, CA 94534-9771
Phone (707) 432-2600

2720 Low CT
Fairfield, CA 94534-9771
Phone (707) 428-2731

2800 L St
Sacramento, CA 95816-5616

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions1-10
Removal or shaving of skin growth1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A02736CAMDFamily Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Sutter Valley Medical Foundation Family Medicine CurrentSince Feb 1, 2019 Accepting new patients
Sutter Valley Medical Foundation CurrentSince Feb 1, 2019 Accepting new patients
Sutter Valley Hospitals Past Accepting new patients
Sutter Regional Medical Foundation Family Medicine Past Accepting new patients

Locations

2720 Low Ct
Fairfield, CA 94534
Phone (707) 428-2731

10470 Old Placerville Rd
Ste 100
Sacramento, CA 95827

2750 Gateway Oaks Dr
Ste 150
Sacramento, CA 95833
Phone (916) 887-7398

2800 L St
Ste 500
Sacramento, CA 95816
Phone (916) 454-6850

100 Hospital Dr
Ste 110
Vallejo, CA 94589
Phone (707) 551-3300

100 Hospital Dr
Ste 200
Vallejo, CA 94589
Phone (707) 551-3400

100 Hospital Dr
Ste 304
Vallejo, CA 94589
Phone (707) 643-6483

Interoperability endpoints

  • Direct secure messaging: shennessey209548@hisp.ehr.sutterhealth.org

Organizations & group practices 5

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 4

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": "1143849600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791417600000",
    "number": "1750342242",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10470 OLD PLACERVILLE RD STE 100",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958272539",
            "telephone_number": "800-470-0071"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 HOSPITAL DR",
            "address_2": "#304",
            "city": "VALLEJO",
            "state": "CA",
            "postal_code": "945892580",
            "telephone_number": "707-643-6483",
            "fax_number": "707-643-3028"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1100 Rose Dr Ste 140",
            "address_purpose": "LOCATION",
            "city": "Benicia",
            "state": "CA",
            "postal_code": "945103623",
            "country_code": "US",
            "telephone_number": "707-247-4900",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HENNESSEY",
        "first_name": "SEAN",
        "middle_name": "PATRICK",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-01",
        "last_updated": "2026-10-08",
        "certification_date": "2026-10-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "A02736",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Vallejo, CA

Sources for this page

Verify at the official NPI Registry.