NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1598718132 MD
Verify on CMS → David Nagelhout, MD
Cardiovascular Disease Physician in Sioux Falls, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 24,795 in Cardiovascular Disease 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
2K
Medicare Part D claims · 238 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
83%
generic claims · 17% 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
David Nagelhout, MD filed 1,518 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in Sioux Falls, South Dakota, prescribing 83% generic.
- 2K
- Part D claims, 2023
- 83%
- 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.
David Nagelhout, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,518 Top 19% higher than 81% 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)
David Nagelhout, MD 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 David Nagelhout, MD?
Quality data not reportedPrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
1,518 50% vs specialty avg
Specialty distribution in South Dakota
How Cardiovascular Disease Physician compares to other specialties among South Dakota 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 Cardiovascular Disease 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).
David Nagelhout, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 4520 W 69TH ST, Sioux Falls, SD, 57108, with a listed phone of (605) 977-5000. NPI 1598718132 was issued on 05/17/2006.
Medicare Part D records for calendar year 2023 show 1,518 prescription claims written by this provider, covering 238 Medicare beneficiaries and totaling roughly $190K in drug spend, split 17% brand-name and 83% generic by claim count.
Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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 | 1598718132 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/17/2006 |
Brand vs generic prescribing mix · Typical
David Nagelhout, MD - brand share 17.0%
Cardiovascular Disease Physician average
17% brand-name claims vs 83% generic, on 1,518 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.
1,518
Total Claims
$190K
Total Drug Cost
238
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,429
- Total Day Supply
- 71,700
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $172K
- Generic Drug Cost
- $18K
Patient Demographics
- Average Patient Age
- 76.3 years
- Avg HCC Risk Score
- 1.42
- Gender Split
- 40% female / 60% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Nagelhout, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
123 claims
- Metoprolol Succinate
Metoprolol Succinate
114 claims
- Carvedilol
Carvedilol
101 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
92 claims
- Furosemide
Furosemide
79 claims
- Diltiazem 24hr Er …
Diltiazem 24hr Er (Cd)
65 claims
- Amiodarone Hcl
Amiodarone Hcl
63 claims
- Isosorbide Mononit…
Isosorbide Mononitrate Er
63 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 123 |
| Metoprolol Succinate | 114 |
| Carvedilol | 101 |
| Rosuvastatin Calcium | 92 |
| Furosemide | 79 |
| Diltiazem 24hr Er (Cd) Diltiazem Hcl | 65 |
| Amiodarone Hcl | 63 |
| Isosorbide Mononitrate Er Isosorbide Mononitrate | 63 |
| Clopidogrel Clopidogrel Bisulfate | 60 |
| Flecainide Acetate | 60 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Cardiovascular Disease Physician Overview
How David Nagelhout, MD fits within the Cardiovascular Disease Physician landscape nationally.
24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
David Nagelhout, MD's 1,518 claims are below the specialty average of 3,033.
Nearby Cardiovascular Disease Physician Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Nagelhout.
Dr. Udit Bhatnagar
MD
Sioux Falls, SD
Dr. Donald Bishop
MD
Sioux Falls, SD
Dr. Amid Bitar
MD
Rapid City, SD
Dr. Sherrie Brooks
D.O.,FACC,FACOI
Sioux Falls, SD
Dr. Paul Carpenter
MD
Sioux Falls, SD
Compare Cardiovascular Disease 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 South Dakota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Cardiovascular Disease 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 David Nagelhout, MD's specialty? ▼
David Nagelhout, MD specializes in Cardiovascular Disease Physician and practices in Sioux Falls, South Dakota. Credentials: MD.
How much does David Nagelhout, MD prescribe under Medicare Part D? ▼
In 2023, David Nagelhout, MD wrote 1,518 Medicare Part D claims totaling $190K in drug costs for 238 beneficiaries.
Where is David Nagelhout, MD located? ▼
David Nagelhout, MD is located at 4520 W 69TH ST, Sioux Falls, SD, 57108. Phone: (605) 977-5000.
What is David Nagelhout, MD's NPI number? ▼
David Nagelhout, MD's National Provider Identifier (NPI) is 1598718132, issued on 05/17/2006.
Does David Nagelhout, MD prescribe more brand-name or generic drugs? ▼
David Nagelhout, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $172K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does David Nagelhout, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, David Nagelhout, MD's most frequently prescribed drugs include Eliquis, Metoprolol Succinate, Carvedilol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Nagelhout, MD accept Medicare? ▼
David Nagelhout, MD appears in CMS Medicare data with 1,518 Part D claims and 238 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Nagelhout, MD's credentials? ▼
David Nagelhout, MD's NPI is 1598718132 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.
- 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.