NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1558651281 M.D.
Verify on CMS → Thomas Queen, M.D.
Gastroenterology Physician in Denver, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,567 in Gastroenterology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
842
Medicare Part D claims · 405 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Thomas Queen, M.D. filed 842 Medicare Part D claims in 2023 as a Gastroenterology Physician in Denver, Colorado, prescribing 94% generic.
- 842
- Part D claims, 2023
- 94%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Thomas Queen, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
842 Top 27% higher than 73% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Thomas Queen, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Thomas Queen, M.D.?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
842 1% vs specialty avg
Specialty distribution in Colorado
How Gastroenterology Physician compares to other specialties among Colorado providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gastroenterology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Thomas Queen, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 2045 N FRANKLIN ST, Denver, CO, 80205, with a listed phone of (303) 338-4545. NPI 1558651281 was issued on 04/14/2011.
Medicare Part D records for calendar year 2023 show 842 prescription claims written by this provider, covering 405 Medicare beneficiaries and totaling roughly $51K in drug spend, split 6% brand-name and 94% generic by claim count.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1558651281 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/14/2011 |
Hospital and facility affiliations
Facilities where Thomas Queen, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Colorado Permanente Medical Group PC
Denver, CO
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Thomas Queen, M.D. - brand share 6.0%
Gastroenterology Physician average
6% brand-name claims vs 94% generic, on 842 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
842
Total Claims
$51K
Total Drug Cost
405
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,329
- Total Day Supply
- 31,125
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $33K
- Generic Drug Cost
- $18K
- Antibiotic Claims
- 75
Patient Demographics
- Average Patient Age
- 72.7 years
- Avg HCC Risk Score
- 1.16
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 21, 65-74: 217, 75-84: 154, 85+: 13
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Thomas Queen, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
299 claims
- Omeprazole 63
Omeprazole
63 claims
- Amoxicillin-Clavul… 39
Amoxicillin-Clavulanate Potass
39 claims
- Famotidine 23
Famotidine
23 claims
- Trulance 20
Trulance
20 claims
- Budesonide Dr 18
Budesonide Dr
18 claims
- Ciprofloxacin Hcl 16
Ciprofloxacin Hcl
16 claims
- Ondansetron Odt 16
Ondansetron Odt
16 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 299 |
| Omeprazole | 63 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 39 |
| Famotidine | 23 |
| Trulance Plecanatide | 20 |
| Budesonide Dr Budesonide | 18 |
| Ciprofloxacin Hcl | 16 |
| Ondansetron Odt Ondansetron | 16 |
| Zenpep Lipase/Protease/Amylase | 14 |
| Cefdinir | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Thomas Queen, M.D. fits within the Gastroenterology Physician landscape nationally.
16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Thomas Queen, M.D.'s 842 claims are above the specialty average of 833.
Nearby Gastroenterology Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Queen.
Dr. David Adams
MD
U S A F Academy, CO
Dr. Douglas Adler
M.D.
Colorado Springs, CO
Abdullah Al-Shahrani
Aurora, CO
Dr. Sam Anouna
M.D.
Thornton, CO
Dr. Kevin Ashby
M.D.
Durango, CO
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Colorado medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gastroenterology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Thomas Queen, M.D.'s specialty? ▼
Thomas Queen, M.D. specializes in Gastroenterology Physician and practices in Denver, Colorado. Credentials: M.D..
How much does Thomas Queen, M.D. prescribe under Medicare Part D? ▼
In 2023, Thomas Queen, M.D. wrote 842 Medicare Part D claims totaling $51K in drug costs for 405 beneficiaries.
Where is Thomas Queen, M.D. located? ▼
Thomas Queen, M.D. is located at 2045 N FRANKLIN ST, Denver, CO, 80205. Phone: (303) 338-4545.
What is Thomas Queen, M.D.'s NPI number? ▼
Thomas Queen, M.D.'s National Provider Identifier (NPI) is 1558651281, issued on 04/14/2011.
Does Thomas Queen, M.D. prescribe more brand-name or generic drugs? ▼
Thomas Queen, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $33K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Thomas Queen, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Thomas Queen, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Omeprazole, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Queen, M.D. accept Medicare? ▼
Thomas Queen, M.D. appears in CMS Medicare data with 842 Part D claims and 405 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Queen, M.D.'s credentials? ▼
Thomas Queen, M.D.'s NPI is 1558651281 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.