NPPES file of Aug 9, 2026

Thomas Edward Mellor, D.O.

Gastroenterology Physician · Santa Barbara, CA

Thomas Edward Mellor, D.O. is a gastroenterology physician with a practice address in Santa Barbara, California, and NPI 1083030274, issued on Mar 12, 2014. Check the license (California 20A23757, 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
1083030274
Name
Thomas Edward Mellor
Credential
D.O.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
20A23757 CA
Self-reported in NPPES; status is on the state search
Practice location
317 W Pueblo St, Santa Barbara, CA 93105
Phone
(805) 898-3120
Enumerated
Mar 12, 2014
Record last updated
Dec 1, 2025
Medicare enrollment
Enrolled (PECOS I20250811002389); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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Also registered at 317 W Pueblo St

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

  1. Justin Abraham, M.D., M.B.A.Neurology Physician1225322522
  2. Hosam Ahmad, M.D.Hospitalist Physician1881846475
  3. Joseph Aragon, M.D.Interventional Cardiology Physician1023122587
  4. Hiwot ArayaHospitalist Physician1922427327
  5. Christina Archer, MS, RDRegistered Dietitian1487178380
  6. Summer Baird, M.D.Internal Medicine Physician1245727809

Verify Thomas Edward Mellor in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A23757
    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. Sansum ClinicSanta Barbara, CA

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

Thomas Edward Mellor among 2,140 gastroenterology physician records in California

Thomas Edward Mellor, D.O. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 83% of them.

  • NPI issued2014 · 83% of these records are older, 15% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2014 · median 2002 among the 1,538 with a school on file
  • Record last updated2025 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in California

There are 2,140 gastroenterology physician records in California.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Thomas Aguirre, M.D.Santa Barbara, CA 931051285772004
  2. Edward Bentley, M.D.Santa Barbara, CA 931051285784207
  3. Thomas Caves, M.D.Santa Barbara, CA 931051144284522
  4. Vincent Derosa, M.D.Santa Barbara, CA 931051679754956
  5. James Egan, M.D.Santa Barbara, CA 931051346357696
  6. William Hahn, M.D.Santa Barbara, CA 931051033227582
  7. John Hobson, M.D.Santa Barbara, CA 931051447368535
  8. Brent Kovacs, MDSanta Barbara, CA 931051730296542

Common questions

What is Thomas Edward Mellor, D.O.'s NPI number?

Thomas Edward Mellor, D.O.'s National Provider Identifier (NPI) is 1083030274, issued on Mar 12, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Edward Mellor, D.O. located?

The NPPES record lists a practice address at 317 W Pueblo St, Santa Barbara, CA, 93105. Phone: (805) 898-3120. Providers update this record themselves, so call before visiting.

How can I verify Thomas Edward Mellor, D.O.'s license?

NPPES lists California license number 20A23757, 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.

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.