NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1831480433
Verify on CMS → John Stendahl
Cardiovascular Disease Physician in New Haven, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 24,810 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
472
Medicare Part D claims · 81 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
73%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.6/100
▼ 10 pts below national avg 83.1 · Mid-tier
Industry payments
$78.48
1 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
John Stendahl reported a CMS MIPS final score of 73.6/100 - below the 83.1 national average - and filed 472 Medicare Part D claims in 2023.
- 73.6/100
- MIPS score · -10 vs avg
- 472
- Part D claims, 2023
- 73%
- 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.
John Stendahl's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
74 11th percentile higher than 11% 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 John Stendahl sits
This provider among cardiovascular disease physician peers
Across the 8,753 cardiovascular disease physician providers who report both Medicare Part D prescribing and a MIPS quality score, John Stendahl writes more Part D claims than 13% of them and scores higher on MIPS quality than 10% - placing this provider in the lower-volume, lower-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 cardiovascular disease physician peer from a representative sample of 60; the gold marker is John Stendahl. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
John Stendahl practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 John Stendahl?
Below national averagePrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
472 84% vs specialty avg
MIPS final score
73.6/100 9.5 pts vs avg
Specialty distribution in Connecticut
How Cardiovascular Disease Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
John Stendahl's 2023 MIPS final score plotted against the Cardiovascular Disease Physician national average
- MIPS Final Score
- 73.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Cardiovascular Disease Physician) - 73.6/100 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).
John Stendahl appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider at 20 YORK ST, New Haven, CT, 06510, with a listed phone of (203) 688-4242. NPI 1831480433 was issued on 04/29/2011.
Medicare Part D records for calendar year 2023 show 472 prescription claims written by this provider, covering 81 Medicare beneficiaries and totaling roughly $518K in drug spend, split 27% brand-name and 73% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.6/100 for the 2023 performance year (Quality 75.8, Cost 51.4), compared with the national average of 83.1.
Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,810 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 | 1831480433 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Gender | Male |
| NPI Issued | 04/29/2011 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.5637
Final Score
Avg: 83.1
75.8435
Quality
51.4318
Cost
74
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where John Stendahl 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.
Yale University
New Haven, CT
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 John Stendahl. Source: openpaymentsdata.cms.gov.
Total received
$78
Largest payer
PFIZER INC.
Most common payment type
Food and Beverage
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.
Brand vs generic prescribing mix · Above average
John Stendahl - brand share 27.0%
Cardiovascular Disease Physician average
27% brand-name claims vs 73% generic, on 472 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.
472
Total Claims
$518K
Total Drug Cost
81
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,204
- Total Day Supply
- 36,066
- Brand vs Generic
- 27% brand / 73% generic
- Brand Drug Cost
- $511K
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 71.7 years
- Avg HCC Risk Score
- 1.62
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Stendahl prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metoprolol Succinate
Metoprolol Succinate
95 claims
- Farxiga
Farxiga
43 claims
- Spironolactone 29
Spironolactone
29 claims
- Lisinopril 27
Lisinopril
27 claims
- Entresto 25
Entresto
25 claims
- Hydrochlorothiazide 24
Hydrochlorothiazide
24 claims
- Rosuvastatin Calcium 24
Rosuvastatin Calcium
24 claims
- Jardiance 23
Jardiance
23 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 95 |
| Farxiga Dapagliflozin Propanediol | 43 |
| Spironolactone | 29 |
| Lisinopril | 27 |
| Entresto Sacubitril/Valsartan | 25 |
| Hydrochlorothiazide | 24 |
| Rosuvastatin Calcium | 24 |
| Jardiance Empagliflozin | 23 |
| Furosemide | 21 |
| Amlodipine Besylate | 19 |
* 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 John Stendahl fits within the Cardiovascular Disease Physician landscape nationally.
24,810
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
John Stendahl's 472 claims are below the specialty average of 3,033.
Nearby Cardiovascular Disease Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Stendahl.
Dr. Binny Abraham
M.D.
New Haven, CT
Dr. Joseph Abreu
MD
Torrington, CT
Dr. Sneha Agarwalla
MD
Bloomfield, CT
Dr. Elliot Agin
M.D.
Milford, CT
Dr. Keshava Aithal
MD
Middletown, CT
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 Connecticut 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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Medical Specialties Explained
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Frequently Asked Questions
What is John Stendahl's specialty? ▼
John Stendahl specializes in Cardiovascular Disease Physician and practices in New Haven, Connecticut.
How much does John Stendahl prescribe under Medicare Part D? ▼
In 2023, John Stendahl wrote 472 Medicare Part D claims totaling $518K in drug costs for 81 beneficiaries.
What is John Stendahl's Medicare quality score? ▼
John Stendahl has a CMS MIPS Final Score of 73.6/100 (Quality: 75.8, Cost: 51.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is John Stendahl located? ▼
John Stendahl is located at 20 YORK ST, New Haven, CT, 06510. Phone: (203) 688-4242.
What is John Stendahl's NPI number? ▼
John Stendahl's National Provider Identifier (NPI) is 1831480433, issued on 04/29/2011.
Does John Stendahl prescribe more brand-name or generic drugs? ▼
John Stendahl's prescribing is 27% brand-name and 73% generic drugs by claim count, with $511K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,810 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 John Stendahl prescribe most often? ▼
Based on 2023 Medicare Part D data, John Stendahl's most frequently prescribed drugs include Metoprolol Succinate, Farxiga, Spironolactone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Stendahl accept Medicare? ▼
John Stendahl appears in CMS Medicare data with 472 Part D claims and 81 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Stendahl's credentials? ▼
John Stendahl's NPI is 1831480433. 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.