Daniel O. Siegel, MD
Gastroenterology Physician · Denver, CO
Daniel O. Siegel, MD is a gastroenterology physician with a practice address in Denver, Colorado, and NPI 1174518344, issued on Sep 14, 2005. Check the license (Colorado 35377, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Daniel O. Siegel
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 35377 CO
Self-reported in NPPES; status is on the state search - Practice location
- 4500 E 9TH Ave, Denver, CO 80220
- Phone
- (303) 355-3525
- Enumerated
- Sep 14, 2005
- Record last updated
- Sep 11, 2025
- Fax
- (303) 355-0255
- Medicaid ID
- 01353770 CO
- Medicare enrollment
- Enrolled (PECOS I20050901000546); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 334 in Colorado → Look up another NPI →
Also registered at 4500 E 9TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kara Alexandrovic, M.DObstetrics & Gynecology Physician1679715361
- Miguel Alvarado, PA-CMedical Physician Assistant1689891475
- Donald Aptekar, M.D.Obstetrics & Gynecology Physician1023103868
- Peter Berndt, M.D.Psychiatry Physician1215945423
- John Bershof, M.D.Specialist1316029937
- Lesley Bevan, MDObstetrics & Gynecology Physician1154513307
Verify Daniel O. Siegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 35377Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% more Medicare Part D claims than the average gastroenterology physician in 2024
1,621 Medicare Part D claims for 391 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Famotidine277 claims
- Omeprazole261 claims
- Esomeprazole Magnesium126 claims
- Pantoprazole Sodium109 claims
- Lubiprostone97 claims
- Rabeprazole Sodium88 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $859.98
47 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
- Denver Digestive Health Specialists IncDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel O. Siegel among 334 gastroenterology physician records in Colorado
Daniel O. Siegel, MD 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
- Graduated1996 · median 2003 among the 258 with a school on file
- Record last updated2025 · 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 Denver → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Jennifer Brenner, M.D.Denver, CO 802201760611305
- Aaron Burrows, MDDenver, CO 802201366491367
- Benjamin Cassell, MDDenver, CO 802201184885790
- Lyssa Chacko, MDDenver, CO 802201629115993
- Jonathan Fishman, MDDenver, CO 802201104813559
- Philip Guzelian, MDDenver, CO 802201619067394
- Mark Linkow, MDDenver, CO 802201639163587
- Lawrence Miller, M.D.Denver, CO 802201912116732
Common questions
What is Daniel O. Siegel, MD's NPI number?
Daniel O. Siegel, MD's National Provider Identifier (NPI) is 1174518344, issued on Sep 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Daniel O. Siegel, MD located?
The NPPES record lists a practice address at 4500 E 9TH Ave, Denver, CO, 80220. Phone: (303) 355-3525. Providers update this record themselves, so call before visiting.
How can I verify Daniel O. Siegel, MD's license?
NPPES lists Colorado license number 35377, 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 Daniel O. Siegel, MD prescribe under Medicare Part D?
In 2024, Daniel O. Siegel, MD had 1,621 Medicare Part D claims for 391 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Daniel O. Siegel, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.