Seth D. Reiner, M.D.
Radiation Oncology Physician · Denver, CO
Seth D. Reiner, M.D. is a radiation oncology physician with a practice address in Denver, Colorado, and NPI 1497887624, issued on Mar 12, 2007. Check the license (Colorado 31800, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Seth D. Reiner
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 31800 CO
Self-reported in NPPES; status is on the state search - Practice location
- 2555 S Downing St, Denver, CO 80210
- Phone
- (303) 778-5714
- Enumerated
- Mar 12, 2007
- Record last updated
- Feb 9, 2022
- Fax
- (303) 778-5293
- Medicaid ID
- 01318021 CO
- Medicare enrollment
- Enrolled (PECOS I20250311002877); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 1988
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 111 in Colorado → Look up another NPI →
Also registered at 2555 S Downing St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Seth D. Reiner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 31800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average radiation oncology physician in 2024
115 Medicare Part D claims for 48 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 22 claims were for opioids.
Most prescribed
- Lidocaine Hcl Viscous19 claims
- Oxycodone Hcl11 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: $392.91
3 payments; by number, the most common kind was food and beverage; the largest payer was Monteris Medical Corporation. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Holy Rosary HealthcareMiles City, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Seth D. Reiner among 111 radiation oncology physician records in Colorado
Seth D. Reiner, M.D. is one of 111 radiation oncology physician records with a practice address in Colorado. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 44% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated1988 · median 2007 among the 88 with a school on file
- Record last updated2022 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Colorado
There are 111 radiation oncology physician records in Colorado.
All 111 in Colorado → Every provider in Denver → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Thomas Pugh, MDDenver, CO 802111174679799
- Ari Ballonoff, MDDenver, CO 802181689720260
- Mark Chidel, MDDenver, CO 802181780711366
- Christopher Deig, M.D.Denver, CO 802181043743883
- Kathryn Howell, MDDenver, CO 802181811971542
- James Jacobs, MDDenver, CO 802181861619173
- Michelle Klem, M.D.Denver, CO 802181790989556
- Brandon Patton, MDDenver, CO 802181659572758
Common questions
What is Seth D. Reiner, M.D.'s NPI number?
Seth D. Reiner, M.D.'s National Provider Identifier (NPI) is 1497887624, issued on Mar 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Seth D. Reiner, M.D. located?
The NPPES record lists a practice address at 2555 S Downing St, Denver, CO, 80210. Phone: (303) 778-5714. Providers update this record themselves, so call before visiting.
How can I verify Seth D. Reiner, M.D.'s license?
NPPES lists Colorado license number 31800, 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 Seth D. Reiner, M.D. prescribe under Medicare Part D?
In 2024, Seth D. Reiner, M.D. had 115 Medicare Part D claims for 48 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.