Fredric E. Weiss, M.D.
Gastroenterology Physician · Encino, CA
Fredric E. Weiss, M.D. is a gastroenterology physician with a practice address in Encino, California, and NPI 1336354059, issued on May 14, 2007. Check the license (California G29963, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Fredric E. Weiss
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G29963 CA
Self-reported in NPPES; status is on the state search - Practice location
- 16311 Ventura Blvd, Encino, CA 91436
- Phone
- (818) 501-4277
- Enumerated
- May 14, 2007
- Record last updated
- Dec 19, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (818) 501-3113
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 16311 Ventura Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Fredric E. Weiss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G29963Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average gastroenterology physician in 2024
157 Medicare Part D claims for 55 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Omeprazole35 claims
- Lactulose29 claims
- Pantoprazole Sodium25 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): 84 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).
Industry payments in 2024: $1,202.18
44 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Fredric E. Weiss among 2,140 gastroenterology physician records in California
Fredric E. Weiss, 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. Its NPI, issued in 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 37% newer
- In a Medicare fileYes · 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.
All 2,140 in California → Every provider in Encino → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Kenneth Buch, MDEncino, CA 914361346200730
- Ara Kardashian, M.D.Encino, CA 914361265703102
- Michael Shiffman, MDEncino, CA 914361497719512
- Efrat Lobel, MDVan Nuys, CA 914111265580245
- Michael Yadegari, M.DVan Nuys, CA 914111023293016
- Nagaraj Chetty, MDVan Nuys, CA 914051508975293
- Gnana Desigan, MDVan Nuys, CA 914051477580298
- Hemant Pande, M.D.Sherman Oaks, CA 914031548306483
Common questions
What is Fredric E. Weiss, M.D.'s NPI number?
Fredric E. Weiss, M.D.'s National Provider Identifier (NPI) is 1336354059, issued on May 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Fredric E. Weiss, M.D. located?
The NPPES record lists a practice address at 16311 Ventura Blvd, Encino, CA, 91436. Phone: (818) 501-4277. Providers update this record themselves, so call before visiting.
How can I verify Fredric E. Weiss, M.D.'s license?
NPPES lists California license number G29963, 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 Fredric E. Weiss, M.D. prescribe under Medicare Part D?
In 2024, Fredric E. Weiss, M.D. had 157 Medicare Part D claims for 55 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Fredric E. Weiss, M.D.'s MIPS final score?
The 2023 MIPS final score is 84 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.