Tamas Otrok, M.D.
Gastroenterology Physician · Longmont, CO
Tamas Otrok, M.D. is a gastroenterology physician with a practice address in Longmont, Colorado, and NPI 1851386734, issued on Sep 15, 2005. Check the license (Colorado DR.0055835, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Tamas Otrok
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- DR.0055835 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1551 Professional LN Unit 290, Longmont, CO 80501
- Phone
- (303) 604-5000
- Enumerated
- Sep 15, 2005
- Record last updated
- Mar 6, 2026
- Fax
- (720) 890-0364
- Medicaid ID
- 18330258 CO
- Medicare enrollment
- Enrolled (PECOS I20151028001396); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 334 in Colorado → Look up another NPI →
Also registered at 1551 Professional LN Unit 290
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Simranjit Bedi, D.O.Gastroenterology Physician1447678271
- Steven Chetham, M.D., F.A.C.P.Gastroenterology Physician1316962376
- David Gatof, M.D.Gastroenterology Physician1881613305
- Katherine Porter, CRNACertified Registered Nurse Anesthetist1265799837
- Rachel Povilus, PA-CPhysician Assistant1750980298
Verify Tamas Otrok in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0055835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average gastroenterology physician in 2024
359 Medicare Part D claims for 198 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Omeprazole111 claims
- Gavilyte-C101 claims
- Cholestyramine20 claims
- Pantoprazole Sodium20 claims
- Budesonide Dr11 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.
Industry payments in 2024: $3,017.47
123 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
- Boulder Valley Gastroenterology Inc.Lakewood, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tamas Otrok among 334 gastroenterology physician records in Colorado
Tamas Otrok, M.D. is one of 334 gastroenterology physician records with a practice address in Colorado. 84% 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 · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1993 · median 2003 among the 258 with a school on file
- Record last updated2026 · 49% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Colorado
There are 334 gastroenterology physician records in Colorado.
All 334 in Colorado → Every provider in Longmont → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Simranjit Bedi, D.O.Longmont, CO 805011447678271
- Steven Chetham, M.D., F.A.C.P.Longmont, CO 805011316962376
- Daniel Freese, D.O.Longmont, CO 805011144200296
- David Gatof, M.D.Longmont, CO 805011881613305
- Nuzhat Iqbal, MDLongmont, CO 805011568467801
- Scot Lewey, D.O.Longmont, CO 805011972695765
- Elliot Morris, MDLongmont, CO 805011942255682
- Jennifer Moss, M.D.Longmont, CO 805041265690374
Common questions
What is Tamas Otrok, M.D.'s NPI number?
Tamas Otrok, M.D.'s National Provider Identifier (NPI) is 1851386734, issued on Sep 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Tamas Otrok, M.D. located?
The NPPES record lists a practice address at 1551 Professional LN Unit 290, Longmont, CO, 80501. Phone: (303) 604-5000. Providers update this record themselves, so call before visiting.
How can I verify Tamas Otrok, M.D.'s license?
NPPES lists Colorado license number DR.0055835, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tamas Otrok, M.D. prescribe under Medicare Part D?
In 2024, Tamas Otrok, M.D. had 359 Medicare Part D claims for 198 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
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.