NPI registry status
Active
2026 NPPES data Interventional Cardiology Physician NPI 1518970086 MD
Verify on CMS → William Bailey, MD
Interventional Cardiology Physician in Phoenix, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,565 in Interventional Cardiology 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
690
Medicare Part D claims · 130 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.5 · Exceptional
Industry payments
$101.78
4 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
William Bailey, MD reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 690 Medicare Part D claims in 2024.
- 100/100
- MIPS score · +17 vs avg
- 690
- Part D claims, 2024
- 86%
- 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.
Federal trust snapshot
What official records show about William Bailey, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1518970086), first enumerated 08/14/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 690 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 100/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$101.78 in reported industry payments (4 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1518970086 · Interventional Cardiology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-ELITE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1518970086
- ENUM-LEGACY 2006
- TAX-NARROW 3,565
- MIPS-ELITE 100/100
- RX-LIGHT 690
- BOOK-THIN 98 in Arizona
- PHOTO-FINISH Srinivas Attanti · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Bailey · this pr…
Bailey · this provider
100 MIPS pts
- Adam Buntaine · …
Adam Buntaine
100 MIPS pts
- Srinivas Attanti…
Srinivas Attanti
100 MIPS pts
- Scott Beach · near
Scott Beach
100 MIPS pts
- Mehul Bhatt · near
Mehul Bhatt
100 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
William Bailey, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
100 ≥ 92nd percentile 92% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where William Bailey, MD sits
This provider among interventional cardiology physician peers
Across the 1,235 interventional cardiology physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Bailey, MD writes more Part D claims than 19% of them and scores higher on MIPS quality than 91% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one interventional cardiology physician peer from a representative sample of 60; the gold marker is William Bailey, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
William Bailey, MD 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 William Bailey, MD?
High performer (top quartile)Primary specialty
Interventional Cardiology Physician
Medicare Part D claims
690 78% vs specialty avg
MIPS final score
100/100 16.5 pts vs avg
Specialty distribution in Arizona
How Interventional Cardiology Physician compares to other specialties among Arizona providers
Medicare quality performance, MIPS
William Bailey, MD's 2023 MIPS final score plotted against the Interventional Cardiology Physician national average
- MIPS Final Score
- 100/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1518970086 |
|---|---|
| Specialty | Interventional Cardiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/14/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Measured-score avg: 83.5
100
Quality
90.1471
Cost
87
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where William Bailey, 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.
Martin Luther King JR Community Medical Foundation
Los Angeles, CA
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 William Bailey, MD. Source: openpaymentsdata.cms.gov.
Total received
$102
Largest payer
Boehringer Ingelheim Pharmaceuticals, 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 · Typical
William Bailey, MD - brand share 14.0%
Interventional Cardiology Physician average
14% brand-name claims vs 86% generic, on 690 2024 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 2024.
690
Total Claims
$112K
Total Drug Cost
130
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,679.567
- Total Day Supply
- 50,338
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $106K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 69.1 years
- Avg HCC Risk Score
- 2.96
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 30, 65-74: 69, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Bailey, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Carvedilol
Carvedilol
121 claims
- Atorvastatin Calcium
Atorvastatin Calcium
71 claims
- Amlodipine Besylate 48
Amlodipine Besylate
48 claims
- Furosemide 47
Furosemide
47 claims
- Eliquis 42
Eliquis
42 claims
- Losartan Potassium 42
Losartan Potassium
42 claims
- Hydralazine Hcl 38
Hydralazine Hcl
38 claims
- Entresto 36
Entresto
36 claims
| Drug | Claims |
|---|---|
| Carvedilol | 121 |
| Atorvastatin Calcium | 71 |
| Amlodipine Besylate | 48 |
| Furosemide | 47 |
| Eliquis Apixaban | 42 |
| Losartan Potassium | 42 |
| Hydralazine Hcl | 38 |
| Entresto Sacubitril/Valsartan | 36 |
| Lisinopril | 23 |
| Clopidogrel Clopidogrel Bisulfate | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Interventional Cardiology Physician Overview
How William Bailey, MD fits within the Interventional Cardiology Physician landscape nationally.
3,565
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
3,147
Avg Claims per Provider
William Bailey, MD's 690 claims are below the specialty average of 3,147.
Nationwide Interventional Cardiology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Bailey, both outside Arizona so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (100 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Interventional Cardiology Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Bailey.
One of 98 Interventional Cardiology Physician providers enrolled in Arizona, 5 are shown here.
Dr. Osama Abdel-Hafez
MD
Tucson, AZ
Dr. Pradeep Agarwal
MD
Peoria, AZ
Dr. Kush Agrawal
MD
Chandler, AZ
Dr. Basil Al Khatib
M.D.
Phoenix, AZ
Dr. Oday Al Rabadi
M.D.
Yuma, AZ
Compare Interventional Cardiology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Bailey, MD's specialty? ▼
William Bailey, MD specializes in Interventional Cardiology Physician and practices in Phoenix, Arizona. Credentials: MD.
How much does William Bailey, MD prescribe under Medicare Part D? ▼
In 2024, William Bailey, MD wrote 690 Medicare Part D claims totaling $112K in drug costs for 130 beneficiaries.
What is William Bailey, MD's Medicare quality score? ▼
William Bailey, MD has a CMS MIPS Final Score of 100/100 (Quality: 100, Cost: 90.1). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Bailey, MD located? ▼
William Bailey, MD is located at 1717 N 1ST AVE UNIT 102, Phoenix, AZ, 85003. Phone: (602) 620-8374.
What is William Bailey, MD's NPI number? ▼
William Bailey, MD's National Provider Identifier (NPI) is 1518970086, issued on 08/14/2006.
Does William Bailey, MD prescribe more brand-name or generic drugs? ▼
William Bailey, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $106K in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US? ▼
There are 3,565 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 3,147 Medicare Part D claims per year.
What drugs does William Bailey, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, William Bailey, MD's most frequently prescribed drugs include Carvedilol, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Bailey, MD accept Medicare? ▼
William Bailey, MD appears in CMS Medicare data with 690 Part D claims and 130 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Bailey, MD's credentials? ▼
William Bailey, MD's NPI is 1518970086 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.