Richard Alan Zelner
Gastroenterology Physician · Fountain Valley, CA
Richard Alan Zelner is a gastroenterology physician with a practice address in Fountain Valley, California, and NPI 1235274259, issued on Feb 20, 2007. Check the license (California G50987, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Richard Alan Zelner
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G50987 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18035 Brookhurst St., Ste. 2100, Fountain Valley, CA 92708
- Phone
- (657) 241-9090
- Enumerated
- Feb 20, 2007
- Record last updated
- Jan 11, 2023
- Fax
- (714) 665-4603
- Entity
- Type 1 · individual
Also registered at 18035 Brookhurst St., Ste. 2100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jose Luis Aranez, M.D.Gastroenterology Physician1932466125
- Lauren Devaughn, CNMAdvanced Practice Midwife1194569681
- Madeline WilliamsMidwife1467184408
Verify Richard Alan Zelner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G50987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average gastroenterology physician in 2024
140 Medicare Part D claims for 62 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Famotidine46 claims
- Sucralfate20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Fountain Valley →
Other gastroenterology physician records in California
- David Aarons, MDLodi, CA1619081379
- Constante Abaya, MDOxnard, CA1003918459
- Sadeea Abbasi, M.D., PH.D.Los Angeles, CA1366713513
- Basim Abdelkarim, MDUpland, CA1932217544
- Homan Abdollahzadeh, MDPalm Springs, CA1184634826
- John Abdulian, M.D.Fresno, CA1437114113
- Hussein Abidali, DORancho Cucamonga, CA1205274768
- Alaa Abousaif, MDOrange, CA1235124108
- Donald Abrahm, M.D.Newport Beach, CA1215022405
- Maria Abreu, M.D.West Hollywood, CA1598793374
Common questions
What is Richard Alan Zelner's NPI number?
Richard Alan Zelner's National Provider Identifier (NPI) is 1235274259, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Richard Alan Zelner located?
The NPPES record lists a practice address at 18035 Brookhurst St., Ste. 2100, Fountain Valley, CA, 92708. Phone: (657) 241-9090. Providers update this record themselves, so call before visiting.
How can I verify Richard Alan Zelner's license?
NPPES lists California license number G50987, 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.
How much does Richard Alan Zelner prescribe under Medicare Part D?
In 2024, Richard Alan Zelner had 140 Medicare Part D claims for 62 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Richard Alan Zelner's MIPS final score?
The 2023 MIPS final score is 76.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.