NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1578511820 MD
Verify on CMS → John Haas, MD
Cardiovascular Disease Physician in Omaha, Nebraska.
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
635
Medicare Part D claims · 193 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
92%
generic claims · 8% 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
John Haas, MD filed 635 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in Omaha, Nebraska, prescribing 92% generic.
- 635
- Part D claims, 2023
- 92%
- 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 Haas, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
635 Top 31% higher than 69% 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 certification likely (heuristic, not verified)
John Haas, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Haas, MD?
Quality data not reportedPrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
635 79% vs specialty avg
Specialty distribution in Nebraska
How Cardiovascular Disease Physician compares to other specialties among Nebraska 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).
John Haas, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 988102 NEBRASKA MEDICAL CTR, Omaha, NE, 68198, with a listed phone of (402) 559-8888. NPI 1578511820 was issued on 05/05/2006.
Medicare Part D records for calendar year 2023 show 635 prescription claims written by this provider, covering 193 Medicare beneficiaries and totaling roughly $65K in drug spend, split 8% brand-name and 92% generic by claim count.
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 | 1578511820 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/05/2006 |
Hospital and facility affiliations
Facilities where John Haas, 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.
Unmc Physicians
Bellevue, NE
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
John Haas, MD - brand share 8.0%
Cardiovascular Disease Physician average
8% brand-name claims vs 92% generic, on 635 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.
635
Total Claims
$65K
Total Drug Cost
193
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,713
- Total Day Supply
- 51,095
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $55K
- Generic Drug Cost
- $10K
Patient Demographics
- Average Patient Age
- 76.6 years
- Avg HCC Risk Score
- 1.69
- Gender Split
- 47% female / 53% male
- Age Distribution
- <65: 12, 65-74: 66, 75-84: 82, 85+: 33
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Haas, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
98 claims
- Metoprolol Tartrate
Metoprolol Tartrate
53 claims
- Furosemide
Furosemide
52 claims
- Lisinopril
Lisinopril
50 claims
- Carvedilol 36
Carvedilol
36 claims
- Metoprolol Succinate 36
Metoprolol Succinate
36 claims
- Amlodipine Besylate 35
Amlodipine Besylate
35 claims
- Eliquis 30
Eliquis
30 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 98 |
| Metoprolol Tartrate | 53 |
| Furosemide | 52 |
| Lisinopril | 50 |
| Carvedilol | 36 |
| Metoprolol Succinate | 36 |
| Amlodipine Besylate | 35 |
| Eliquis Apixaban | 30 |
| Losartan Potassium | 26 |
| Hydrochlorothiazide | 21 |
* 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 Haas, MD 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 Haas, MD's 635 claims are below the specialty average of 3,033.
Nearby Cardiovascular Disease Physician Providers in Nebraska
Other clinicians with the same primary specialty enrolled in Nebraska, drawn from the same CMS NPPES roster as Haas.
Dr. Hussam Abuissa
M.D.
Omaha, NE
Dr. Soban Ahmad
MD
Omaha, NE
Dr. Arslan Ahmed
MD
Omaha, NE
Dr. Khalid Al Saidi
M.D.
Omaha, NE
Dr. Firas Alani
M.D.
Columbus, NE
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 Nebraska 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 John Haas, MD's specialty? ▼
John Haas, MD specializes in Cardiovascular Disease Physician and practices in Omaha, Nebraska. Credentials: MD.
How much does John Haas, MD prescribe under Medicare Part D? ▼
In 2023, John Haas, MD wrote 635 Medicare Part D claims totaling $65K in drug costs for 193 beneficiaries.
Where is John Haas, MD located? ▼
John Haas, MD is located at 988102 NEBRASKA MEDICAL CTR, Omaha, NE, 68198. Phone: (402) 559-8888.
What is John Haas, MD's NPI number? ▼
John Haas, MD's National Provider Identifier (NPI) is 1578511820, issued on 05/05/2006.
Does John Haas, MD prescribe more brand-name or generic drugs? ▼
John Haas, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $55K 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 Haas, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, John Haas, MD's most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Tartrate, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Haas, MD accept Medicare? ▼
John Haas, MD appears in CMS Medicare data with 635 Part D claims and 193 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Haas, MD's credentials? ▼
John Haas, MD's NPI is 1578511820 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.
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.