Gilbert Simoni, M.D., FACG
NPI 1316922958 · Gastroenterology Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gilbert Simoni, M.D., FACG is a Gastroenterology Physician provider in Thousand Oaks, CA (NPI 1316922958).
Provider details
- NPI number
- 1316922958
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., FACG
- Sex
- Male
- Sole proprietor
- No
- License
- A77140 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,577 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 312 | $131 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 188 | $99 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 149 | $243 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 95 | $183 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 89 | $80 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 60 | 30 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 49 | 46 |
| Lipase/Protease/Amylasebrand: Creon | 30 | 15 |
| Mesalamine | 29 | 13 |
| Mesalaminebrand: Mesalamine Er | 29 | 11 |
| Sucralfate | 21 | 15 |
| Famotidine | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,619 across 83 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-07
- Last updated
- 2022-07-21
- Certified
- 2021-10-01
Frequently asked questions
- What is Gilbert Simoni's NPI number?
- Gilbert Simoni's National Provider Identifier (NPI) is 1316922958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gilbert Simoni's specialty?
- Gilbert Simoni is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gilbert Simoni located?
- Gilbert Simoni's practice location on file with NPPES is 555 Marin St Ste 270, Thousand Oaks, CA 91360-4112.
- What is Gilbert Simoni's phone number?
- The practice phone number listed in the NPPES registry for Gilbert Simoni is (805) 719-0244.
- Does Gilbert Simoni accept Medicare?
- Gilbert Simoni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gilbert Simoni's NPI active?
- Yes — Gilbert Simoni's NPI (1316922958) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.