NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1649269291 MD
Verify on CMS → Christopher Aronson, MD
Internal Medicine Physician in Saint Cloud, Minnesota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in Internal Medicine 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
281
Medicare Part D claims · 76 beneficiaries · Internal Medicine Physician avg: 3K
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Christopher Aronson, MD reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 281 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 281
- 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.
Christopher Aronson, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% 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 Christopher Aronson, MD sits
This provider among internal medicine physician peers
Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Christopher Aronson, MD writes more Part D claims than 31% of them and scores higher on MIPS quality than 93% - 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 internal medicine physician peer from a representative sample of 60; the gold marker is Christopher Aronson, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Christopher Aronson, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 5 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 Christopher Aronson, MD?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
281 90% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in Minnesota
How Internal Medicine Physician compares to other specialties among Minnesota providers
Medicare quality performance, MIPS
Christopher Aronson, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 100/100 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).
Christopher Aronson, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 1200 6TH AVE N, Saint Cloud, MN, 56303, with a listed phone of (320) 251-2700. NPI 1649269291 was issued on 10/17/2005.
Medicare Part D records for calendar year 2023 show 281 prescription claims written by this provider, covering 76 Medicare beneficiaries and totaling roughly $23K in drug spend, with an opioid prescribing rate of 5.0%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 94.1, Cost 84.7), compared with the national average of 83.1.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1649269291 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/17/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
94.0914
Quality
84.7225
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Christopher Aronson, 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.
According to CMS billing records, Christopher Aronson, MD is affiliated with 5 Medicare-billing facilities, 2 of which carry a CMS Hospital overall star rating.
Northfield Hospital
★★★★☆ 4/5
Northfieldm, MN
Acute Care Hospitals
CMS CCN: 240014
Welia Health
★★★☆☆ 3/5
Mora, MN
Critical Access Hospitals
CMS CCN: 241367
Cook County Hospital District
Grand Marais, MN
Lifecare Medical Center
Roseau, MN
Critical Access Hospitals
CMS CCN: 241344
Pipestone County Medical Center
Pipestone, MN
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
281
Total Claims
$23K
Total Drug Cost
76
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 294
- Total Day Supply
- 5,414
- Generic Drug Cost
- $4K
- Opioid Claims
- 14 (5.0% rate)
- Antibiotic Claims
- 25
Patient Demographics
- Average Patient Age
- 77.0 years
- Avg HCC Risk Score
- 2.94
- Gender Split
- 59% female / 41% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Christopher Aronson, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Lisinopril
Lisinopril
23 claims
- Labetalol Hcl
Labetalol Hcl
20 claims
- Pantoprazole Sodium
Pantoprazole Sodium
15 claims
| Drug | Claims |
|---|---|
| Lisinopril | 23 |
| Labetalol Hcl | 20 |
| Pantoprazole Sodium | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Christopher Aronson, MD fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Christopher Aronson, MD's 281 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Aronson.
Dr. Christopher Aakre
MD
Rochester, MN
Dr. Karen Aarestad
MD
Brainerd, MN
Dr. Peter Aas
MD
Duluth, MN
Dr. Saud Abaalkhail
M.B.,B.S.
Minneapolis, MN
Dr. Mohamad Abbas
M.D.
Saint Paul, MN
Compare Internal Medicine 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 Minnesota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine 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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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Christopher Aronson, MD's specialty? ▼
Christopher Aronson, MD specializes in Internal Medicine Physician and practices in Saint Cloud, Minnesota. Credentials: MD.
How much does Christopher Aronson, MD prescribe under Medicare Part D? ▼
In 2023, Christopher Aronson, MD wrote 281 Medicare Part D claims totaling $23K in drug costs for 76 beneficiaries.
What is Christopher Aronson, MD's Medicare quality score? ▼
Christopher Aronson, MD has a CMS MIPS Final Score of 100/100 (Quality: 94.1, Cost: 84.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Christopher Aronson, MD located? ▼
Christopher Aronson, MD is located at 1200 6TH AVE N, Saint Cloud, MN, 56303. Phone: (320) 251-2700.
What is Christopher Aronson, MD's NPI number? ▼
Christopher Aronson, MD's National Provider Identifier (NPI) is 1649269291, issued on 10/17/2005.
Does Christopher Aronson, MD prescribe opioids? ▼
Yes, Christopher Aronson, MD had 14 opioid claims in 2023 with an opioid prescribing rate of 5.0%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Christopher Aronson, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Christopher Aronson, MD's most frequently prescribed drugs include Lisinopril, Labetalol Hcl, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher Aronson, MD accept Medicare? ▼
Christopher Aronson, MD appears in CMS Medicare data with 281 Part D claims and 76 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Aronson, MD's credentials? ▼
Christopher Aronson, MD's NPI is 1649269291 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.