NPI registry status
Active
2026 NPPES data Nuclear Radiology Physician NPI 1538586912 MD
Verify on CMS → Andrew Callen, MD
Nuclear Radiology Physician in Aurora, 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 662 in Nuclear Radiology 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
20
Medicare Part D claims · 11 beneficiaries · Nuclear Radiology Physician avg: 1K
MIPS score
97.6/100
▲ 14 pts above national avg 83.1 · Exceptional
Industry payments
$6.2K
4 payments · CMS Open Payments (Sunshine Act)
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
Andrew Callen, MD reported a CMS MIPS final score of 97.6/100 - above the 83.1 national average - and filed 20 Medicare Part D claims in 2023.
- 97.6/100
- MIPS score · +14 vs avg
- 20
- Part D claims, 2023
- 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.
Andrew Callen, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 15% higher than 85% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Andrew Callen, MD sits
This provider among nuclear radiology physician peers
Across the 17 nuclear radiology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Andrew Callen, MD writes more Part D claims than 35% of them and scores higher on MIPS quality than 76% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one nuclear radiology physician peer from a representative sample of 16; the gold marker is Andrew Callen, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Andrew Callen, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Andrew Callen, MD?
High performer (top quartile)Primary specialty
Nuclear Radiology Physician
Medicare Part D claims
20 98% vs specialty avg
MIPS final score
97.6/100 14.5 pts vs avg
Specialty distribution in Colorado
How Nuclear Radiology Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
Andrew Callen, MD's 2023 MIPS final score plotted against the Nuclear Radiology Physician national average
- MIPS Final Score
- 97.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Nuclear Radiology Physician) - 97.6/100 vs national avg 83.1
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).
Andrew Callen, MD appears in the CMS NPPES registry as a Nuclear Radiology Physician provider holding MD credentials at 12605 E 16TH AVE, Aurora, CO, 80045, with a listed phone of (720) 848-0000. NPI 1538586912 was issued on 03/24/2014.
Medicare Part D records for calendar year 2023 show 20 prescription claims written by this provider, covering 11 Medicare beneficiaries and totaling roughly $448 in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 97.6/100 for the 2023 performance year (Quality 86.5), compared with the national average of 83.1.
Nuclear Radiology Physician is a narrow specialty nationwide, with 662 enrolled providers across 51 states and an average of 1,000 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 | 1538586912 |
|---|---|
| Specialty | Nuclear Radiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/24/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
97.5814
Final Score
Avg: 83.1
86.5348
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Andrew Callen, MD 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.
Uchealth Imaging Services LLC
Englewood, CO
University Physicians Incorporated
Aurora, 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).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Andrew Callen, MD. Source: openpaymentsdata.cms.gov.
Total received
$6.2K
Largest payer
Eli Lilly and Company
Most common payment type
Consulting Fee
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
20
Total Claims
$448
Total Drug Cost
11
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 20
- Total Day Supply
- 270
- Brand Drug Cost
- $0
- Generic Drug Cost
- $448
Patient Demographics
- Average Patient Age
- 65.9 years
- Avg HCC Risk Score
- 0.99
Nuclear Radiology Physician Overview
How Andrew Callen, MD fits within the Nuclear Radiology Physician landscape nationally.
662
Nuclear Radiology Physician Providers in US
51
States with Nuclear Radiology Physician
1,000
Avg Claims per Provider
Andrew Callen, MD's 20 claims are below the specialty average of 1,000.
Nearby Nuclear Radiology Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Callen.
Dr. Laura Acosta Izquierdo
MD
Aurora, CO
Dr. Mehmet Aksakal
M.D.
Aurora, CO
Dr. Gladys Arguello Fletes
MD
Aurora, CO
Dr. Harrison Bai
MD
Aurora, CO
Dr. Debayan Bhaumik
MD
Aurora, CO
Compare Nuclear Radiology 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 Nuclear Radiology 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 Andrew Callen, MD's specialty? ▼
Andrew Callen, MD specializes in Nuclear Radiology Physician and practices in Aurora, Colorado. Credentials: MD.
How much does Andrew Callen, MD prescribe under Medicare Part D? ▼
In 2023, Andrew Callen, MD wrote 20 Medicare Part D claims totaling $448 in drug costs for 11 beneficiaries.
What is Andrew Callen, MD's Medicare quality score? ▼
Andrew Callen, MD has a CMS MIPS Final Score of 97.6/100 (Quality: 86.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Andrew Callen, MD located? ▼
Andrew Callen, MD is located at 12605 E 16TH AVE, Aurora, CO, 80045. Phone: (720) 848-0000.
What is Andrew Callen, MD's NPI number? ▼
Andrew Callen, MD's National Provider Identifier (NPI) is 1538586912, issued on 03/24/2014.
How many Nuclear Radiology Physician providers are there in the US? ▼
There are 662 Nuclear Radiology Physician providers across 51 states in the US. The average Nuclear Radiology Physician provider writes 1,000 Medicare Part D claims per year.
Does Andrew Callen, MD accept Medicare? ▼
Andrew Callen, MD appears in CMS Medicare data with 20 Part D claims and 11 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andrew Callen, MD's credentials? ▼
Andrew Callen, MD's NPI is 1538586912 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.