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Sleep Medicine

William T. Hart, MD

Sees patients in Santa Cruez, CA · Santa Cruz, CA · Watsonville, CA … · California

Summary

William T. Hart, MD (Sleep Medicine) is enrolled with Medicare at 4 practice locations in Santa Cruez, CA, Santa Cruz, CA and Watsonville, CA and other places. NPI 1609856582. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(831) 423‑4111 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about William T. Hart, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

4Practice locations
Sleep MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
40Years since medical school (graduated 1986)
Ponce School Of MedicineMedical school
MaleGender (as listed)
Sutter Bay Medical FoundationGroup practice

Quick answers

Where does William T. Hart see patients?
Medicare's clinician data lists 4 practice locations, including Santa Cruez, CA, Santa Cruz, CA and Watsonville, CA. Call before your visit to confirm the address.
What is William T. Hart's specialty?
Medicare lists Sleep Medicine as the primary specialty, and also Internal Medicine.
Does William T. Hart accept Medicare assignment?
Yes. Medicare's clinician data says William T. Hart accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does William T. Hart offer telehealth?
Medicare's clinician data says William T. Hart offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for William T. Hart?
(831) 423-4111, as listed in official Medicare / NPI Registry data.
What is William T. Hart's NPI number?
1609856582. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where William T. Hart is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists William T. Hart as a member of this group (CMS data updated 2026-10-02).

  • Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

Find other Sleep Medicine doctors in California →

Other sleep medicine doctors in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All sleep medicine doctors in California →

Clinician information

CredentialMD
Medical schoolPonce School Of Medicine
Graduation year1986
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1609856582
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians