FREDERICK SOMMERVIL WATSON M.D.
NPI 1568450104
Internal Medicine - Cardiovascular Disease in San Mateo, CA

Q: What is Frederick Watson's NPI number?

The NPI number for Frederick Watson is 1568450104. It was assigned to this individual provider in the NPPES registry on October 7, 2005.

Q: What is Frederick Watson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Frederick Watson was last updated on October 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 07, 2005PECOS EnrolledAccepts Medicare Assignment

50 S SAN MATEO DR, SAN MATEO, CA 94401(650) 652-8600 Get Directions Write a Review

NPPES record last updated: October 21, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 4, 2020, Mar 9, 2020 (2 updates tracked since 2020).

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About Frederick Sommervil Watson M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

FREDERICK SOMMERVIL WATSON M.D. (NPI 1568450104) is an individual cardiovascular disease provider in San Mateo, California, licensed in New York (306537) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Our Lady Of Lourdes Memorial Hospital, Inc, and is a graduate of University Of Texas Medical Branch At Galveston (1983).

NPPES Registry Identity

NPI1568450104

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameFREDERICK SOMMERVIL WATSONCredential: M.D.

Location Address50 S SAN MATEO DRSan Mateo, CA 94401-3857

Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (650) 652-8600

Phone(650) 652-8600

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 1983

Enumeration DateOctober 7, 2005

Last NPPES UpdateOctober 21, 20252 updates tracked since enumeration

NPPES CertifiedOctober 21, 2025

✔ NPI 1568450104 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in NY · 306537✔ Licensed in CA · A48257

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal Medicine · Interventional CardiologyTaxonomy 207RI0011X · License A48257 (CA)

50 S SAN MATEO DR, San Mateo, CA 94401

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Other Identifiers 1

Medicaid00A482570CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Frederick Sommervil Watson M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8921158379

PECOS Enrollment IDI20220412001879

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

28 services18 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

20 services20 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Our Lady Of Lourdes Memorial Hospital, Inc

Acute Care Hospitals · Binghamton, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330011

Location169 Riverside DriveBinghamton, NY 13905 · Broome County

Emergency services Birthing friendly

New York-Presbyterian Hospital

Acute Care Hospitals · New York, NY

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330101

Location525 East 68th StreetNew York, NY 10065 · New York County

Emergency services Birthing friendly

Hudson Valley Hospital Center

Acute Care Hospitals · Cortlandt Manor, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330267

Location1980 Crompond RoadCortlandt Manor, NY 10567 · Westchester County

Emergency services Birthing friendly

United Health Services Hospitals, Inc

Acute Care Hospitals · Binghamton, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330394

Location10-42 Mitchell AvenueBinghamton, NY 13903 · Broome County

Emergency services Birthing friendly

Robert Packer Hospital

Acute Care Hospitals · Sayre, PA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390079

LocationOne Guthrie SquareSayre, PA 18840 · Bradford County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SOMYA JALAN MD

Pediatrics

50 S SAN MATEO DR
SAN MATEO, CA 94401

San Mateo County (650) 652-8353

DR. STEPHEN BUCHNER MD

Pediatrics

50 S SAN MATEO DR, STE 180
SAN MATEO, CA 94401

San Mateo County (650) 342-4145

DR. GEORGE WILLIAM SHORAGO M.D.

Otolaryngology

50 S SAN MATEO DR, SUITE 320
SAN MATEO, CA 94401

San Mateo County (650) 340-7200

JULIAN HARDY MCLAIN MD

Internal Medicine (Hematology & Oncology)

50 S SAN MATEO DR
SAN MATEO, CA 94401

San Mateo County (650) 696-5420

HOWARD K CHOW MD

Pediatrics

50 S SAN MATEO DR, SUITE 260
SAN MATEO, CA 94401

San Mateo County (650) 579-6500

DENISE MARY ROS

Physician Assistant

50 S SAN MATEO DR
SAN MATEO, CA 94401

San Mateo County (650) 652-8788

JEANNE V BEYMER MD

Pediatrics

50 S SAN MATEO DR, STE 260
SAN MATEO, CA 94401

San Mateo County (650) 579-6500

DR. JOHN ROBERT GRIFFIN M.D.

Surgery (Plastic and Reconstructive Surgery)

50 S SAN MATEO DR, STE 470
SAN MATEO, CA 94401

San Mateo County (650) 652-8239

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Frederick Watson's NPI number?

The NPI number for Frederick Watson is 1568450104. It was assigned to this individual provider in the NPPES registry on October 7, 2005.

Where is Frederick Watson located?

Frederick Watson practices at 50 S San Mateo Dr, San Mateo, CA 94401. The listed phone number is (650) 652-8600.

What is Frederick Watson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Frederick Watson enrolled in Medicare?

Yes. Frederick Watson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Frederick Watson accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Frederick Watson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Frederick Watson affiliated with any hospitals?

According to CMS data, Frederick Watson is affiliated with Our Lady Of Lourdes Memorial Hospital, Inc, New York-Presbyterian Hospital, Hudson Valley Hospital Center, United Health Services Hospitals, Inc and Robert Packer Hospital.

When was this NPI record last updated?

The NPPES record for Frederick Watson was last updated on October 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.