2026 NPPES data Interventional Cardiology Physician NPI 1821094236 M.D.
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WILLIAM MACLEAN, M.D.

Interventional Cardiology Physician in BIRMINGHAM, Alabama. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 364 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
87.4763/100
▲ 4 pts above national avg 83.1 · [object Object]
What the federal data reveals: WILLIAM MACLEAN, M.D. is a Interventional Cardiology Physician ([object Object]) practicing in BIRMINGHAM, Alabama with a Medicare Part D prescribing footprint of 3K claims across 364 beneficiaries — 15% brand-name prescribing . Their CMS MIPS Final Score of 87.4763/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: WILLIAM MACLEAN, M.D. reported a CMS MIPS final score of 87.4763 out of 100, above the 83.1 national average, and filed 2,701 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

WILLIAM MACLEAN, M.D. 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).

WILLIAM MACLEAN, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/22/2005

NPI 1821094236

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

2,701 9% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

MIPS final score

87.4763/100 4.3763000000000005% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Alabama

How Interventional Cardiology Physician compares to other specialties among Alabama providers

Alabama providers

Interventional Cardiology Physician share within Alabama

1. Interventional Cardiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Interventional Cardiology Physician share within Alabama

Medicare quality performance — MIPS

WILLIAM MACLEAN, M.D.'s 2023 MIPS final score plotted against the Interventional Cardiology Physician national average

High performer (top quartile)
MIPS Final Score
87.4763/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Interventional Cardiology Physician) — 87.4763/100 vs national avg 83.1

0%100%National avg83%87.5%
MIPS final score (Interventional Cardiology Physician) — 87.4763/100 vs national avg 83.1

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).

WILLIAM MACLEAN, M.D. is a Interventional Cardiology Physician provider practicing in BIRMINGHAM, Alabama, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1821094236. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

WILLIAM MACLEAN, M.D. appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding M.D. credentials at 5890 VALLEY RD, BIRMINGHAM, AL, 35235, with a listed phone of (205) 971-7500. NPI 1821094236 was issued on 06/22/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MACLEAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,701 prescription claims written by this provider, covering 364 Medicare beneficiaries and totaling roughly $380K in drug spend, split 15% brand-name and 85% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.4763/100 for the 2023 performance year (Quality 74.9526), compared with the national average of 83.1.

Interventional Cardiology Physician is a narrow specialty nationwide, with 3,382 enrolled providers across 53 states and an average of 2,984 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

5890 VALLEY RD
BIRMINGHAM, AL 35235

Provider Details

NPI 1821094236
Specialty Interventional Cardiology Physician
Credentials M.D.
Gender Male
NPI Issued 06/22/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

87.4763
Final Score
Avg: 83.1
74.9526
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where WILLIAM MACLEAN, M.D. 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.

AFFINITY CARDIOVASCULAR SPECIALISTS LLC
GADSDEN, AL

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 · Typical

WILLIAM MACLEAN, M.D. — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 2,701 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.

2,701
Total Claims
$380K
Total Drug Cost
364
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,526
Total Day Supply
194,539
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$328K
Generic Drug Cost
$52K

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
1.47
Gender Split
51% female / 49% male
Age Distribution
<65: 45, 65-74: 145, 75-84: 130, 85+: 44

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Carvedilol
473
Atorvastatin Calcium
225
Eliquis
Apixaban
177
Spironolactone
156
Losartan Potassium
143
Furosemide
115
Lisinopril
109
Hydrochlorothiazide
106
Clopidogrel
Clopidogrel Bisulfate
89
Amlodipine Besylate
71

* 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 MACLEAN, M.D. fits within the Interventional Cardiology Physician landscape nationally.

3,382
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider

WILLIAM MACLEAN, M.D.'s 2,701 claims are below the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in Alabama

Other clinicians with the same primary specialty enrolled in Alabama, drawn from the same CMS NPPES roster as MACLEAN.

Compare Interventional Cardiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM MACLEAN, M.D.'s specialty?
WILLIAM MACLEAN, M.D. specializes in Interventional Cardiology Physician and practices in BIRMINGHAM, Alabama. Credentials: M.D..
How much does WILLIAM MACLEAN, M.D. prescribe under Medicare Part D?
In 2023, WILLIAM MACLEAN, M.D. wrote 2,701 Medicare Part D claims totaling $380K in drug costs for 364 beneficiaries.
What is WILLIAM MACLEAN, M.D.'s Medicare quality score?
WILLIAM MACLEAN, M.D. has a CMS MIPS Final Score of 87.4763/100 (Quality: 74.9526). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is WILLIAM MACLEAN, M.D. located?
WILLIAM MACLEAN, M.D. is located at 5890 VALLEY RD, BIRMINGHAM, AL, 35235. Phone: (205) 971-7500.
What is WILLIAM MACLEAN, M.D.'s NPI number?
WILLIAM MACLEAN, M.D.'s National Provider Identifier (NPI) is 1821094236, issued on 06/22/2005.
Does WILLIAM MACLEAN, M.D. prescribe more brand-name or generic drugs?
WILLIAM MACLEAN, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $328K in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US?
There are 3,382 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
What drugs does WILLIAM MACLEAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM MACLEAN, M.D.'s most frequently prescribed drugs include Carvedilol, Atorvastatin Calcium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM MACLEAN, M.D. accept Medicare?
WILLIAM MACLEAN, M.D. appears in CMS Medicare data with 2,701 Part D claims and 364 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM MACLEAN, M.D.'s credentials?
WILLIAM MACLEAN, M.D.'s NPI is 1821094236 with credentials M.D.. 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

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