NPPES file of Aug 9, 2026

Thomas Arthur Hildreth, M.D.

Urology Physician · Napa, CA

Thomas Arthur Hildreth, M.D. is a urology physician with a practice address in Napa, California, and NPI 1417946096, issued on Oct 17, 2005. Check the license (California C38117, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1417946096
Name
Thomas Arthur Hildreth
Credential
M.D.
Primary taxonomy
Urology Physician 208800000X
License number
C38117 CA
Self-reported in NPPES; status is on the state search
Practice location
1100 Trancas St, Napa, CA 94558
Phone
(707) 224-7944
Enumerated
Oct 17, 2005
Record last updated
Feb 9, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(707) 224-5220
Medicaid ID
00C381170 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1100 Trancas St

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

  1. James Bird, M.D.Specialist1629067210
  2. Brian Boni, M.D.Occupational Medicine Physician1356487334
  3. Joseph Carrillo, M.D.Pediatrics Physician1053335943
  4. Andrea Clarke, MDFamily Medicine Physician1598734709
  5. Lisa CucinellaMidwife1013108414
  6. Paul Dugan, M.D.Hematology & Oncology Physician1992770069

Verify Thomas Arthur Hildreth in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C38117
    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

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Urology Physician providers in California

There are 1,524 urology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other urology physician records in California

  1. David Aaronson, MDOakland, CA1215053129
  2. Jason Abber, MDPanorama City, CA1356366926
  3. Marc Abboud, MDLos Alamitos, CA1265096531
  4. George AbdelsayedAnaheim, CA1568721843
  5. Garen AbediDowney, CA1285909051
  6. Jennifer Abidari, MDStanford, CA1811098197
  7. Sherif Aboseif, MDOxnard, CA1093882995
  8. Parwiz Abrahimi, M.D., PH.D.Los Angeles, CA1154857613
  9. Anthony Acquaviva, MDVallejo, CA1457439283
  10. Theodore Affue, M.D.El Centro, CA1386674000

Common questions

What is Thomas Arthur Hildreth, M.D.'s NPI number?

Thomas Arthur Hildreth, M.D.'s National Provider Identifier (NPI) is 1417946096, issued on Oct 17, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Arthur Hildreth, M.D. located?

The NPPES record lists a practice address at 1100 Trancas St, Napa, CA, 94558. Phone: (707) 224-7944. Providers update this record themselves, so call before visiting.

How can I verify Thomas Arthur Hildreth, M.D.'s license?

NPPES lists California license number C38117, 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. An NPI identifies who bills; it is not a license.

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.