Dr. Thomas W. Flaig, MD
- Medicare services, 2024
- 313
- Medicare patients, 2024
- 86
- Part D claims, 2024
- 219
- Publications
- 162
- Clinical trials
- 9
- Practice address
- 12605 E 16th Ave, Aurora, CO 80045
- Practice phone
- Call (720) 848-0000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Flaig's professional email, personal email and mobile number
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Dr. Thomas W. Flaig is a hematologist and oncologist in Aurora, Colorado
Dr. Flaig practices at UCHealth University of Colorado Hospital in Aurora, Colorado, part of UCHealth.
Dr. Flaig's NPI, 1881620326, was assigned on June 25, 2006. Dr. Flaig graduated from University Of Minnesota Medical School in 1999. Dr. Flaig holds Colorado license 44457.
- NPI
- 1881620326NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375546450
- NPI enumeration date
- June 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (720) 848-0000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas W. Flaig practices at UCHealth University of Colorado Hospital in Aurora, Colorado
Dr. Flaig's primary practice is UCHealth University of Colorado Hospital, at 12605 E 16th Ave, Aurora, CO 80045 in Adams County. The practice phone is (720) 848-0000.
- UCHealth University of Colorado Hospital12605 E 16th Ave, Aurora, CO 80045 · Adams CountyPhone(720) 848-0000
Source: Dmand AI Affiliation Data
Dr. Thomas W. Flaig is affiliated with 5 sites of care and 1 medical group
Dr. Flaig's primary practice is UCHealth University of Colorado Hospital in Aurora, Colorado, part of UCHealth. Dr. Flaig is also affiliated with UCHealth Medical Center of the Rockies. The medical group on file is University of Colorado Medicine (CU Medicine). Dmand AI also links Dr. Flaig to 3 more hospitals, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas W. Flaig's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Flaig practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCHealth University of Colorado Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas W. Flaig is one of 179 hematologists and oncologists in Colorado
Hematology and oncology is Dr. Flaig's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Flaig is board certified in medical oncology by the American Board of Internal Medicine. Dr. Flaig is licensed in Colorado.
Specialties and state licenses
- Hematology and oncology, ColoradoPrimary
Clinical focus
Dmand AI lists chronic anemia and prostate cancer among the conditions Dr. Flaig treats.
Hematologists and oncologists near Dr. Flaig
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thomas W. Flaig billed Medicare for 313 services in 2024
CMS data shows 313 Medicare services from Dr. Flaig across 4 procedure codes in 2024, for 86 Medicare patients. Medicare paid $21,149 for them.
Dr. Flaig's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1932024: 22316%
- Other services
- 2023: 02024: 90
Where Dr. Flaig's Medicare services took place, 2024
- In an office114%
- In a facility30296%
Dr. Flaig compared with the Colorado median for hematologists and oncologists, 2024
- Dr. Flaig
- Colorado median
- Medicare services
- 313vs 62450% below
- Medicare patients
- 86vs 24264% below
- Part D claims
- 162vs 50368% below
Medians across 181 hematologists and oncologists in Colorado with Dmand AI profiles that report each measure.
Dr. Flaig's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Flaig?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Flaig and other hematologists and oncologists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas W. Flaig treated 86 Medicare patients in 2024, average age 76
CMS counts 86 Medicare patients who saw Dr. Flaig in 2024. The largest group is 65 to 74, with 40 patients. 75% of them have cancer, and 71% have high cholesterol. Their average risk score is 2.44, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Flaig's median patient age at 76, with 6% women.
Dr. Flaig's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Flaig's Medicare patients, 2024
- Cancer75%
- High cholesterol71%
- High blood pressure63%
- Arthritis52%
- Chronic kidney disease40%
- Ischemic heart disease35%
- Mood disorders24%
- Diabetes22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Flaig's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women6%
- Men94%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas W. Flaig wrote 219 Medicare Part D claims in 2024
In 2024, Dr. Flaig wrote 219 Medicare Part D claims for 30 patients. 69% of them were for generic drugs. CMS names the drug for 162 of them, across 4 drugs with 11 or more claims each, at $790,393 in total drug cost. In 2023, CMS named 58 claims across 2 drugs.
Dr. Flaig's Part D claims by kind of drug, 2024
- Generic151 claims69%
- Brand-name68 claims31%
Dr. Flaig's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 582024: 162179%
Drugs named by CMS: 4 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Thomas W. Flaig offers telehealth to Medicare patients
Dr. Flaig accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Flaig as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Thomas W. Flaig has 162 publications on record
Dmand AI links 162 papers to Dr. Flaig, published from 2006 to 2025. 2021 was the busiest year, with 13. The most frequent topics are Prostatic Neoplasms, Urinary Bladder Neoplasms and Antineoplastic Agents. Dr. Flaig has published most often in Oncology (Williston Park). Dr. Flaig's most frequent co-authors are Elizabeth Riley Kessler, MD, Elaine T. Lam, MD and Elward David Crawford, MD.
Dr. Flaig's papers by year, 2016 to 2025
Topics Dr. Flaig writes about most
- Prostatic Neoplasms
- Urinary Bladder Neoplasms
- Antineoplastic Agents
- Antineoplastic Combined Chemotherapy Protocols
- Kidney Neoplasms
- Neoplasm Metastasis
- Carcinoma, Renal Cell
- Prostatic Neoplasms, Castration-Resistant
Dr. Flaig's most frequent co-authors
- Elizabeth Riley Kessler, MD22 shared papers
- Elaine T. Lam, MD19 shared papers
- Elward David Crawford, MD11 shared papers
Recent publications by Dr. Flaig
Support Care Cancer
See who Dr. Flaig researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Flaig works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas W. Flaig has worked on 9 clinical trials
Dmand AI links Dr. Flaig to 9 clinical trials, 4 of them phase 2 studies. 1 is still active or recruiting. Conditions studied include Urethral Neoplasms, Urinary Bladder Neoplasms and Ureteral Neoplasms. University of Colorado, Denver sponsors the most, 3. Open Payments lists research payments to Dr. Flaig that name 3 trials.
Clinical trials with Dr. Flaig by phase
- NonePhase 1: no trials
- 4Phase 2: 4 trials
- 2Phase 3: 2 trials
- NonePhase 4: no trials
Conditions in Dr. Flaig's trials
- Urethral Neoplasms
- Urinary Bladder Neoplasms
- Ureteral Neoplasms
- Urinary Bladder Diseases
- Carcinoma, Renal Cell
Investigators on the most trials with Dr. Flaig
- Yull Edwin Arriaga, MD2 shared trials
- Frederick Edward Millard, MD2 shared trials
- James Kendel Schwarz, MD2 shared trials
Recent clinical trials with Dr. Flaig
A Study of Ramucirumab (LY3009806) Plus Docetaxel in Participants With Urothelial Cancer (opens in a new tab)
S1314, Co-expression Extrapolation (COXEN) Program to Predict Chemotherapy Response in Patients With Bladder Cancer (opens in a new tab)
Trebananib (AMG 386) in Combination With Docetaxel for Advanced Urothelial Carcinoma (opens in a new tab)
S1014 Abiraterone Acetate in Treating Patients With Prostate Cancer Who Have Undergone Initial Hormone Therapy (opens in a new tab)
Gemcitabine Hydrochloride and Cisplatin With or Without Bevacizumab in Treating Patients With Advanced Urinary Tract Cancer (opens in a new tab)
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Thomas W. Flaig received $3,395 in industry payments from 2016 to 2025
CMS Open Payments shows 21 general payments to Dr. Flaig from 4 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 47% of the total. Genentech, Inc. paid the most, $1,887. It also lists 32 research payments totaling $18,093 from 2018 to 2025, naming 3 clinical trials.
General payments to Dr. Flaig by program year, 2016 to 2025
General payments to Dr. Flaig by kind, 2016 to 2025
- Consulting fees$1,60547%
- Food and beverage$75222%
- Compensation for serving as faculty or as a speaker for a medical education program$58517%
- Travel and lodging$45313%
Companies that paid Dr. Flaig the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas W. Flaig has 1 award and honors on record
Dmand AI lists 1 award for Dr. Flaig, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Flaig
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Thomas W. Flaig graduated from University Of Minnesota Medical School
Dr. Flaig graduated from University Of Minnesota Medical School in 1999.
- Medical school
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Thomas W. Flaig accepts plans from 15 insurance carriers
Dr. Flaig is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Cigna
- HCSC
- United Healthcare
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +7 more carriersWith a free account
Plan types Dr. Flaig accepts, by number of carriers
- PPO10
- Medicare9
- HMO8
- POS7
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas W. Flaig's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas W. Flaig
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Thomas W. Flaig's NPI number?
Dr. Thomas W. Flaig's NPI number is 1881620326. It was assigned on June 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas W. Flaig?
Dr. Thomas W. Flaig is a hematologist and oncologist in Aurora, Colorado. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Thomas W. Flaig practice?
Dr. Flaig practices at 12605 E 16th Ave, Aurora, CO 80045. Dr. Flaig's primary practice is UCHealth University of Colorado Hospital in Aurora, Colorado, part of UCHealth. Dmand AI also links Dr. Flaig to 3 hospitals.
What is Dr. Thomas W. Flaig's office phone number?
The practice phone on file for Dr. Flaig is (720) 848-0000.
What is Dr. Thomas W. Flaig's medical license number?
Dr. Flaig holds Colorado license 44457.
Which hospitals is Dr. Thomas W. Flaig affiliated with?
Dr. Flaig practices at UCHealth University of Colorado Hospital in Aurora, Colorado. Dr. Flaig is also affiliated with UCHealth Medical Center of the Rockies. Dmand AI links Dr. Flaig to 3 more hospitals.
What medical group is Dr. Thomas W. Flaig part of?
Dr. Flaig is linked to University of Colorado Medicine (CU Medicine).
Does Dr. Thomas W. Flaig accept Medicare?
Yes. CMS data shows Dr. Flaig billed Medicare for 313 services in 2024, and Dr. Flaig accepts Medicare assignment.
Does Dr. Thomas W. Flaig offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Flaig as offering telehealth services.
How many Medicare patients does Dr. Thomas W. Flaig see?
CMS counts 86 Medicare patients who saw Dr. Flaig in 2024, with an average age of 76.
Show 9 more questionsShow fewer questions
Is Dr. Thomas W. Flaig board certified?
Yes. Dr. Flaig is board certified in medical oncology by the American Board of Internal Medicine.
What services does Dr. Thomas W. Flaig bill to Medicare?
In 2024, Dr. Flaig's most billed Medicare services were office visit, established patient (99215), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. Thomas W. Flaig go to medical school?
Dr. Flaig graduated from University Of Minnesota Medical School in 1999.
What drugs does Dr. Thomas W. Flaig prescribe most?
In 2024 Medicare Part D data, Dr. Flaig's most prescribed drugs by claims were Abiraterone Acetate, Xtandi and Prednisone.
Has Dr. Thomas W. Flaig received payments from drug or device companies?
CMS Open Payments shows $3,395 in general payments to Dr. Flaig from 4 companies from 2016 to 2025. The largest total came from Genentech, Inc.
How long has Dr. Thomas W. Flaig been practicing?
Dr. Flaig graduated from medical school in 1999, 27 years ago.
Does Dr. Thomas W. Flaig do research?
Dmand AI links 162 publications to Dr. Flaig, published from 2006 to 2025. Dr. Flaig has worked on 9 clinical trials.
Who does Dr. Thomas W. Flaig publish with?
Dr. Flaig's most frequent co-authors are Elizabeth Riley Kessler, MD (22 shared papers), Elaine T. Lam, MD (19 shared papers) and Elward David Crawford, MD (11 shared papers).
What insurance does Dr. Thomas W. Flaig accept?
Dr. Flaig is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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