NPIMap

Individual provider Active NPI

Frederick Sommervil Watson, M.D.

  • Cardiovascular Disease Physician
  • San Mateo, CA
National Provider Identifier
1568450104
Registry record updated Oct 21, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
306537 Issued in NY
Practice address
50 S San Mateo Dr
San Mateo, CA 94401-3857
Phone
(650) 652-8600
NPI assigned
Oct 7, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 21, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Cardiovascular Disease Physician 207RC0000X A48257 CA
Interventional Cardiology Physician 207RI0011X A48257 CA
Cardiovascular Disease Physician 207RC0000X 306537 NY Primary

Addresses

Primary practice location

50 S San Mateo Dr
San Mateo, CA 94401-3857

Mailing address

325 Distel Cir
Los Altos, CA 94022-1408
Phone (650) 652-8600

Other identifiers 1

IdentifierTypeStateIssuer
00A482570MedicaidCA

Electronic endpoints 3

TypeEndpointUseAffiliation
Direct Messaging Address mrh9011@direct.nyp.org Direct
FHIR URL https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/ Health Information Exchange (HIE)
FHIR URL https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/ Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, NY2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20090605000612 CA Practitioner - Cardiovascular Disease (Cardiology)Practitioner - Interventional Cardiology 8921158379 Reassigns benefits to 1 organization
I20220412001879 NY Practitioner - Cardiovascular Disease (Cardiology)Practitioner - Interventional Cardiology 8921158379 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)Also: Interventional Cardiology
Education
University of Texas Medical Branch at Galveston, 1983
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

169 Riveride Dr
Binghamton, NY 13905-4246
Phone (607) 352-3550

1980 Crompond Rd
Cortlandt Manor, NY 10567-4144
Phone (914) 737-9000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A48257CAMDInterventional Cardiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Arnot Ogden Medical Center CurrentSince Aug 1, 2024 Accepting new patients
Jeffrey J. Guttas, M.D. a Medical Corporation Cardiovascular Disease CurrentSince Oct 18, 2007 Accepting new patients
The Westchester Medical Practice, PC CurrentSince Oct 29, 2025 Accepting new patients
Icahn School of Medicine at Mount Sinai CurrentSince Jan 5, 2022 Accepting new patients
Our Lady of Lourdes Memorial Hospital, Inc. CurrentSince Jan 20, 2025 Accepting new patients
Twin Tier Pathology Associates, PC Current Accepting new patients
Arnot Ogden Medical Center CurrentSince Aug 1, 2024 Accepting new patients
The Westchester Medical Practice, PC CurrentSince Oct 29, 2025 Accepting new patients
Our Lady of Lourdes Memorial Hospital Inc. CurrentSince Jan 20, 2025 Accepting new patients
Our Lady of Lourdes Memorial Hospital, Inc. Current Accepting new patients
Icahn School of Medicine at Mount Sinai CurrentSince Jan 5, 2022 Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients
Orohealth Corporation a Non Profit Healthcare System Past Accepting new patients

Locations

1501 Trousdale Dr
Burlingame, CA 94010
Phone (650) 696-3520

1501 Trousdale Dr
Ste 215
Burlingame, CA 94010
Phone (415) 600-6388

2001 Winward Way
Ste 101
San Mateo, CA 94404
Phone (650) 288-0602

100 S San Mateo Dr
#400
San Mateo, CA 94401
Phone (650) 696-4100

161 Riverside Dr
Ste M05
Binghamton, NY 13905
Phone (607) 770-7074

169 Riverside Dr
Ste 206
Binghamton, NY 13905
Phone (607) 798-6701

169 Riverside Dr
Binghamton, NY 13905
Phone (607) 798-5111

161 Riverside Dr
Ste M07
Binghamton, NY 13905
Phone (607) 797-3937

1980 Crompond Rd
Cortlandt Mnr, NY 10567
Phone (914) 734-3600

600 Roe Ave
Elmira, NY 14905
Phone (607) 733-3639

600 Roe Ave
Ste 1F
Elmira, NY 14905
Phone (607) 795-8161

500 5th Ave
Owego, NY 13827
Phone (607) 687-1122

Networks

  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H3359
  • Healthfirst Medicare Network H1722
  • Healthfirst Medicare Network H9678

Interoperability endpoints

  • Direct secure messaging: fwatson200321@direct-guthrie.org
  • Direct secure messaging: fwatson46132@hisp.ehr.sutterhealth.org

Organizations & group practices 13

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.

View all 13

Hospital & facility affiliations 10

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": "1128643200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761004800000",
    "number": "1568450104",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "325 DISTEL CIR",
            "city": "LOS ALTOS",
            "state": "CA",
            "postal_code": "940221408",
            "telephone_number": "650-652-8600"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "50 S SAN MATEO DR",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944013857",
            "telephone_number": "650-652-8600"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WATSON",
        "first_name": "FREDERICK",
        "middle_name": "SOMMERVIL",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-07",
        "last_updated": "2025-10-21",
        "certification_date": "2025-10-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "CA",
            "license": "A48257",
            "primary": false
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "CA",
            "license": "A48257",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "NY",
            "license": "306537",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A482570",
            "state": "CA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mrh9011@direct.nyp.org",
            "affiliation": "N",
            "endpointDescription": "Direct Address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Direct Address",
            "address_1": "1980 Crompond Rd",
            "city": "Cortlandt Manor",
            "state": "NY",
            "country_code": "US",
            "postal_code": "105674144",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "FHIR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "1980 Crompond Rd",
            "city": "Cortlandt Manor",
            "state": "NY",
            "country_code": "US",
            "postal_code": "105674144",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/",
            "affiliation": "N",
            "endpointDescription": "FHIR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "1980 Crompond Rd",
            "city": "Cortlandt Manor",
            "state": "NY",
            "country_code": "US",
            "postal_code": "105674144",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in San Mateo, CA

Sources for this page

Verify at the official NPI Registry.