Thomas Flaig, MD
Hematology & Oncology Physician · Aurora, CO
Thomas Flaig, MD is a hematology & oncology physician with a practice address in Aurora, Colorado, and NPI 1881620326, issued on Jun 25, 2006. Check the license (Colorado 44457, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas Flaig
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 44457 CO
Self-reported in NPPES; status is on the state search - Practice location
- 12605 E 16TH Ave, Aurora, CO 80045
- Phone
- (720) 848-0000
- Enumerated
- Jun 25, 2006
- Record last updated
- Oct 3, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 35522569 CO
- Medicare enrollment
- Enrolled (PECOS I20060809000513); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 212 in Colorado → Look up another NPI →
Also registered at 12605 E 16TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jean Abbott, MDEmergency Medicine Physician1578672820
- Adam Abraham, MDInternal Medicine Physician1720178304
Verify Thomas Flaig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 44457Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
219 Medicare Part D claims for 30 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Abiraterone Acetate80 claims
- Xtandi37 claims
- Prednisone33 claims
- Lynparza12 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.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $455.37
5 payments; by number, the most common kind was travel and lodging; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,560 providers of this specialty with any payment received $7,481.41 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
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Flaig among 212 hematology & oncology physician records in Colorado
Thomas Flaig, MD is one of 212 hematology & oncology physician records with a practice address in Colorado. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 30% of them.
- NPI issued2006 · 30% of these records are older, 51% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1999 · median 2004 among the 150 with a school on file
- Record last updated2012 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Colorado
There are 212 hematology & oncology physician records in Colorado.
All 212 in Colorado → Every provider in Aurora → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Angela Davies, M.D.Aurora, CO 800451346222114
- Jennifer Diamond, MDAurora, CO 800451912053513
- Bradley Haverkos, MDAurora, CO 800451679707319
- Manali Kamdar, MDAurora, CO 800451184817959
- Madeleine Kane, M.D.Aurora, CO 800451528034964
- Tomer Mark, MD, MSCAurora, CO 800451891981346
- Ara Metjian, MDAurora, CO 800451679635502
- Vu Nguyen, M.D.Aurora, CO 800451104913599
Common questions
What is Thomas Flaig, MD's NPI number?
Thomas Flaig, MD's National Provider Identifier (NPI) is 1881620326, issued on Jun 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Flaig, MD located?
The NPPES record lists a practice address at 12605 E 16TH Ave, Aurora, CO, 80045. Phone: (720) 848-0000. Providers update this record themselves, so call before visiting.
How can I verify Thomas Flaig, MD's license?
NPPES lists Colorado license number 44457, 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 Thomas Flaig, MD prescribe under Medicare Part D?
In 2024, Thomas Flaig, MD had 219 Medicare Part D claims for 30 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Thomas Flaig, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.