NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1841274255
Verify on CMS → Dale Petersen
Internal Medicine Physician in Minneapolis, 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
304
Medicare Part D claims · 27 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
80%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Dale Petersen filed 304 Medicare Part D claims in 2023 as an Internal Medicine Physician in Minneapolis, Minnesota, prescribing 80% generic.
- 304
- Part D claims, 2023
- 80%
- generic prescribing
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.
Dale Petersen's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
304 Top 43% higher than 57% 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-eligible specialty (heuristic, not verified)
Dale Petersen practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Dale Petersen?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
304 89% vs specialty avg
Specialty distribution in Minnesota
How Internal Medicine Physician compares to other specialties among Minnesota 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 Internal Medicine 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).
Dale Petersen appears in the CMS NPPES registry as an Internal Medicine Physician provider at 2001 BLAISDELL AVE, Minneapolis, MN, 55404, with a listed phone of (952) 993-8000. NPI 1841274255 was issued on 11/30/2005.
Medicare Part D records for calendar year 2023 show 304 prescription claims written by this provider, covering 27 Medicare beneficiaries and totaling roughly $25K in drug spend, split 12% brand-name and 80% generic by claim count.
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 | 1841274255 |
|---|---|
| Specialty | Internal Medicine Physician |
| Gender | Male |
| NPI Issued | 11/30/2005 |
Brand vs generic prescribing mix · Typical
Dale Petersen - brand share 12.0%
Internal Medicine Physician average
12% brand-name claims vs 80% generic, on 304 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.
304
Total Claims
$25K
Total Drug Cost
27
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 376
- Total Day Supply
- 10,049
- Brand vs Generic
- 12% brand / 80% generic
- Brand Drug Cost
- $17K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 1.22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Dale Petersen prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
27 claims
- Furosemide
Furosemide
23 claims
- Humalog Kwikpen U-…
Humalog Kwikpen U-100
22 claims
- Amlodipine Besylate
Amlodipine Besylate
14 claims
- Citalopram Hbr
Citalopram Hbr
14 claims
- Metformin Hcl
Metformin Hcl
14 claims
- Potassium Chloride
Potassium Chloride
14 claims
- Levothyroxine Sodium
Levothyroxine Sodium
12 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 27 |
| Furosemide | 23 |
| Humalog Kwikpen U-100 Insulin Lispro | 22 |
| Amlodipine Besylate | 14 |
| Citalopram Hbr Citalopram Hydrobromide | 14 |
| Metformin Hcl | 14 |
| Potassium Chloride | 14 |
| Levothyroxine Sodium | 12 |
| Lisinopril | 12 |
| Glipizide Er Glipizide | 11 |
* 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 Dale Petersen 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
Dale Petersen's 304 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 Petersen.
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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Frequently Asked Questions
What is Dale Petersen's specialty? ▼
Dale Petersen specializes in Internal Medicine Physician and practices in Minneapolis, Minnesota.
How much does Dale Petersen prescribe under Medicare Part D? ▼
In 2023, Dale Petersen wrote 304 Medicare Part D claims totaling $25K in drug costs for 27 beneficiaries.
Where is Dale Petersen located? ▼
Dale Petersen is located at 2001 BLAISDELL AVE, Minneapolis, MN, 55404. Phone: (952) 993-8000.
What is Dale Petersen's NPI number? ▼
Dale Petersen's National Provider Identifier (NPI) is 1841274255, issued on 11/30/2005.
Does Dale Petersen prescribe more brand-name or generic drugs? ▼
Dale Petersen's prescribing is 12% brand-name and 80% generic drugs by claim count, with $17K in brand drug costs.
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 Dale Petersen prescribe most often? ▼
Based on 2023 Medicare Part D data, Dale Petersen's most frequently prescribed drugs include Atorvastatin Calcium, Furosemide, Humalog Kwikpen U-100. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dale Petersen accept Medicare? ▼
Dale Petersen appears in CMS Medicare data with 304 Part D claims and 27 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dale Petersen's credentials? ▼
Dale Petersen's NPI is 1841274255. 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
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.