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Edit this profileAt a glance
- 555 Marin St Ste 270, Thousand Oaks, CA 91360
About Dr. Simoni
Gilbert Simoni, M.D., FACG is a healthcare provider in Thousand Oaks, CA specializing in gastroenterology. Gilbert is also listed as specializing in internal medicine. According to Medicare claims data, Gilbert cared for 1,357 Medicare patients across 1,566 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, biopsy of large bowel using a flexible endoscope, and removal of polyps or growths of large bowel using an endoscope with mechanical snare. This provider record is associated with NPI 1316922958.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 719-0244
- Email not available
Practice Locations
555 MARIN ST STE 270
Thousand Oaks, CA 91360
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
Procedures Most Often Billed to Medicare
1,566 services · 1,357 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
188 | More than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
149 | More than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
89 | More than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
68 | More than most peers in Gastroenterology |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
58 | More than most peers in Gastroenterology |
| Destruction of polyp or growth of large bowel using a flexible endoscope | Procedure | 45388 |
52 | More often than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
42 | More than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
20 | More than most peers in Gastroenterology |
| Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscope with mechanical snare | Procedure | 43251 |
16 | As often as other peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
15 | Less often than most peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other gastroenterologists in Thousand Oaks 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 1999 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of large bowel using a flexible endoscope 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Gilbert Simoni, M.D. specialize in?
Gilbert Simoni, M.D. is a gastroenterologist in Thousand Oaks, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Gilbert Simoni, M.D. located?
Gilbert Simoni, M.D. is listed at 555 Marin St Ste 270, Thousand Oaks, CA 91360. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Gilbert Simoni, M.D.'s phone number?
The number on file is (805) 719-0244. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Gilbert Simoni, M.D.'s NPI number?
Gilbert Simoni, M.D.'s National Provider Identifier is 1316922958. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Gilbert Simoni, M.D. train?
Gilbert Simoni, M.D. attended Other, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How long has Gilbert Simoni, M.D. been practicing?
Gilbert Simoni, M.D. has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What does Gilbert Simoni, M.D. do most often?
According to Medicare billing data, Gilbert Simoni, M.D. performs procedures including biopsy of large bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope; reads or performs imaging such as limited ultrasound scan behind abdominal cavity and complete ultrasound scan of abdomen, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Gilbert Simoni, M.D. confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Gilbert Simoni, M.D.. If this is you, claiming it is free.
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