NPPES file of Aug 9, 2026

David R. Hayward, M.D.

Internal Medicine Physician · Santa Cruz, CA

David R. Hayward, M.D. is an internal medicine physician with a practice address in Santa Cruz, California, and NPI 1447368576, issued on Aug 28, 2006. Check the license (California C182225, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1447368576
Name
David R. Hayward
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
C182225 CA
L1068 TX
44296 WI
Self-reported in NPPES; status is on the state search
Practice location
1661 Soquel Dr Ste D, Santa Cruz, CA 95065
Phone
(831) 458-6925
Enumerated
Aug 28, 2006
Record last updated
May 9, 2023
Medicaid IDs
040644906 TX
34216800 WI
040644905 TX
040644903 TX
Medicare enrollment
Enrolled (PECOS I20230510000854); accepts Medicare assignment
Medical or professional school
Texas Tech University Health Science Center School Of Medicine, 1999
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →

Also registered at 1661 Soquel Dr Ste D

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John Boggs, ACNPAcute Care Nurse Practitioner1679919138
  2. William Cao, MDHospitalist Physician1932189529
  3. Cesar Castillo, MDHospitalist Physician1578735148
  4. Rodrigo Cordero-Pangrazio, M.D.Hospitalist Physician1033571161
  5. Laura Hallahan, M.D.Hospitalist Physician1093155756
  6. Richard Hamner, MDHospitalist Physician1588660401

Verify David R. Hayward in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C182225    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationMountain View, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

David R. Hayward among 17,696 internal medicine physician records in California

David R. Hayward, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1999 · median 2004 among the 11,065 with a school on file
  • Record last updated2023 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Internal Medicine Physician providers in California

There are 17,696 internal medicine physician records in California.

All 17,696 in California → Every provider in Santa Cruz → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Elizabeth Brennan, M.D.Santa Cruz, CA 950651982794855
  2. Satish Chandra, M.D.Santa Cruz, CA 950651659474542
  3. Morvarid Ebrahimi, M.D.Santa Cruz, CA 950651366771727
  4. James Engelman, M.D.Santa Cruz, CA 950651518963982
  5. Karl Johsens, M.D.Santa Cruz, CA 950651295948727
  6. Delroy McFarlane, M.D.Santa Cruz, CA 950651619089588
  7. Vidya Nagaraju, M.D.Santa Cruz, CA 950651790806081
  8. Inemesit Newsome, MDSanta Cruz, CA 950651639494933

Common questions

What is David R. Hayward, M.D.'s NPI number?

David R. Hayward, M.D.'s National Provider Identifier (NPI) is 1447368576, issued on Aug 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is David R. Hayward, M.D. located?

The NPPES record lists a practice address at 1661 Soquel Dr Ste D, Santa Cruz, CA, 95065. Phone: (831) 458-6925. Providers update this record themselves, so call before visiting.

How can I verify David R. Hayward, M.D.'s license?

NPPES lists California license number C182225, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.