NPPES file of Aug 9, 2026

Robert J. Mehler, M.D.

Gastroenterology Physician · San Gabriel, CA

Robert J. Mehler, M.D. is a gastroenterology physician with a practice address in San Gabriel, California, and NPI 1730259243, issued on Nov 9, 2006. Check the license (California G12425, 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
1730259243
Name
Robert J. Mehler
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
G12425 CA
Self-reported in NPPES; status is on the state search
Practice location
416 W Las Tunas Dr, San Gabriel, CA 91776
Phone
(626) 281-7461
Enumerated
Nov 9, 2006
Record last updated
Jun 24, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(626) 281-8827
Medicaid ID
00G124250 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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8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →

Also registered at 416 W Las Tunas Dr

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

  1. Guoping CaiAudiologist-Hearing Aid Fitter1790722791
  2. Peter Chiu, M.D.Internal Medicine Physician1740338151
  3. David Chu, M.D.Surgical Oncology Physician1477553485
  4. Alba Flores, MSN, FNPFamily Nurse Practitioner1255755336
  5. Gamini Hethumuni, MDEndocrinology, Diabetes & Metabolism Physician1659459824
  6. Ying Huang, M.D.Ophthalmology Physician1487713061

Verify Robert J. Mehler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G12425    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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Robert J. Mehler among 2,140 gastroenterology physician records in California

Robert J. Mehler, M.D. 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 not. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 48% newer
  • In a Medicare fileNo · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 72% of these records are
  • Record last updated2008 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,140 in California → Every provider in San Gabriel → Gastroenterology Physician nationwide →

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Dana Pan, MDSan Gabriel, CA 917761265842934
  2. Chester Zahn, MDSan Gabriel, CA 917761639146442
  3. Tien-Chun Chen, MDTemple City, CA 917801396005450
  4. Ken Nguyen, M.D.Temple City, CA 917801205193828
  5. Steve Nguyen, D.O.Rosemead, CA 917701649357732
  6. Tu Tranvan, M.D.Rosemead, CA 917701376570184
  7. Andrew Dam, DOPomona, CA 917671225590037
  8. Gerald Goldman, MDPomona, CA 917671538232905

Common questions

What is Robert J. Mehler, M.D.'s NPI number?

Robert J. Mehler, M.D.'s National Provider Identifier (NPI) is 1730259243, issued on Nov 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert J. Mehler, M.D. located?

The NPPES record lists a practice address at 416 W Las Tunas Dr, San Gabriel, CA, 91776. Phone: (626) 281-7461. Providers update this record themselves, so call before visiting.

How can I verify Robert J. Mehler, M.D.'s license?

NPPES lists California license number G12425, 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.

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.