Gilbert Simoni, M.D., FACG
Gastroenterology Physician · Thousand Oaks, CA
Gilbert Simoni, M.D., FACG is a gastroenterology physician with a practice address in Thousand Oaks, California, and NPI 1316922958, issued on Dec 7, 2005. Check the license (California A77140, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gilbert Simoni
- Credential
- M.D., FACG
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- A77140 CA
MA74330 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 555 Marin St Ste 270, Thousand Oaks, CA 91360
- Phone
- (805) 719-0244
- Enumerated
- Dec 7, 2005
- Record last updated
- Jul 21, 2022
- Fax
- (805) 777-1730
- Medicare enrollment
- Enrolled (PECOS I20151016001114); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 555 Marin St Ste 270
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sahar Fariman, FNP-CAdult Health Nurse Practitioner1982245650
Verify Gilbert Simoni in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A77140Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average gastroenterology physician in 2024
398 Medicare Part D claims for 174 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium60 claims
- Sod Sulf-Potass Sulf-Mag Sulf49 claims
- Creon30 claims
- Mesalamine29 claims
- Mesalamine Er29 claims
- Sucralfate21 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): 79.2 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: $7,618.76
83 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.
Bills Medicare through one group practice
- Sonora Community HospitalSonora, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gilbert Simoni among 2,140 gastroenterology physician records in California
Gilbert Simoni, M.D., FACG 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1999 · median 2002 among the 1,538 with a school on file
- Record last updated2022 · 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 Thousand Oaks → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Albertson, M.D.Thousand Oaks, CA 913601114035128
- Shahram Daneshgar, MDThousand Oaks, CA 913601730191875
- Kumar Desai, M.D.Thousand Oaks, CA 913601841495728
- Bonaventure Eng, MDThousand Oaks, CA 913601538366489
- Gregory Johnson, MDThousand Oaks, CA 913601952463762
- Steven Kind, MDThousand Oaks, CA 913601811005044
- Paul Sanders, MDThousand Oaks, CA 913601629044748
- Hector Caballero, MDWestlake Village, CA 913611174515662
Common questions
What is Gilbert Simoni, M.D., FACG's NPI number?
Gilbert Simoni, M.D., FACG's National Provider Identifier (NPI) is 1316922958, issued on Dec 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gilbert Simoni, M.D., FACG located?
The NPPES record lists a practice address at 555 Marin St Ste 270, Thousand Oaks, CA, 91360. Phone: (805) 719-0244. Providers update this record themselves, so call before visiting.
How can I verify Gilbert Simoni, M.D., FACG's license?
NPPES lists California license number A77140, 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 Gilbert Simoni, M.D., FACG prescribe under Medicare Part D?
In 2024, Gilbert Simoni, M.D., FACG had 398 Medicare Part D claims for 174 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Gilbert Simoni, M.D., FACG's MIPS final score?
The 2023 MIPS final score is 79.2 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.