NPPES file of Aug 9, 2026

Gregory T. Guldner, M.D.

Emergency Medicine Physician · Loma Linda, CA

Gregory T. Guldner, M.D. is an emergency medicine physician with a practice address in Loma Linda, California, and NPI 1932125523, issued on Jul 15, 2006. Check the license (California A66619, 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
1932125523
Name
Gregory T. Guldner
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A66619 CA
Self-reported in NPPES; status is on the state search
Practice location
11234 Anderson St, Loma Linda, CA 92354
Phone
(909) 558-4344
Enumerated
Jul 15, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
00A666190 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 emergency medicine physician records → All 7,751 in California → Look up another NPI →

Also registered at 11234 Anderson St

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

  1. Carolyn AbbasiAnesthesiology Physician1811287311
  2. Marian Abdelmalek, DOInternal Medicine Physician1285218024
  3. Faiz Abdur-Rahman, MDStudent in an Organized Health Care Education/Training Program1144073768
  4. Marc Abou AssaliStudent in an Organized Health Care Education/Training Program1689317265
  5. Adina Achiriloaie, MDDiagnostic Neuroimaging (Radiology) Physician1992983282
  6. Ana Acosta, MDStudent in an Organized Health Care Education/Training Program1265179774

Verify Gregory T. Guldner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A66619    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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Gregory T. Guldner among 7,751 emergency medicine physician records in California

Gregory T. Guldner, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 60% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2007 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

168 emergency medicine physician records list a practice address in Loma Linda

They are 168 of the 4,863 NPPES records with a practice address in Loma Linda, and 7,751 emergency medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,751 in California → Every provider in Loma Linda → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Robert Bassler, M.D.Loma Linda, CA 923541184675902
  2. Lance Brown, M.D.Loma Linda, CA 923541376562793
  3. Deepak Chandwani, M.D.Loma Linda, CA 923541144264177
  4. Tony Chow, M.D.Loma Linda, CA 923541154340578
  5. Lynda Daniel-Underwood, M.D.Loma Linda, CA 923541063447241
  6. Jeff Grange, M.D.Loma Linda, CA 923541801815238
  7. Steven Green, M.D.Loma Linda, CA 923541619996048
  8. Korbin Haycock, M.D.Loma Linda, CA 923541669407888

Common questions

What is Gregory T. Guldner, M.D.'s NPI number?

Gregory T. Guldner, M.D.'s National Provider Identifier (NPI) is 1932125523, issued on Jul 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory T. Guldner, M.D. located?

The NPPES record lists a practice address at 11234 Anderson St, Loma Linda, CA, 92354. Phone: (909) 558-4344. Providers update this record themselves, so call before visiting.

How can I verify Gregory T. Guldner, M.D.'s license?

NPPES lists California license number A66619, 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.