NPI registry status
Active
2026 NPPES data Infectious Disease Physician NPI 1477915387 M.D.
Verify on CMS → Timothy McElroy, M.D.
Infectious Disease Physician in Milwaukee, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 8,292 in Infectious 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
50
Medicare Part D claims · 16 beneficiaries · Infectious Disease Physician avg: 816
Generic prescribing
46%
generic claims · 54% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
80.5/100
▼ 3 pts below national avg 83.1 · Above neutral
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
Timothy McElroy, M.D. reported a CMS MIPS final score of 80.5/100 - below the 83.1 national average - and filed 50 Medicare Part D claims in 2023.
- 80.5/100
- MIPS score · -3 vs avg
- 50
- Part D claims, 2023
- 46%
- 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.
Timothy McElroy, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
81 33rd percentile higher than 33% 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 Timothy McElroy, M.D. sits
This provider among infectious disease physician peers
Across the 2,276 infectious disease physician providers who report both Medicare Part D prescribing and a MIPS quality score, Timothy McElroy, M.D. writes more Part D claims than 9% of them and scores higher on MIPS quality than 36% - 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 infectious disease physician peer from a representative sample of 60; the gold marker is Timothy McElroy, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Timothy McElroy, 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).
What does the federal data show about Timothy McElroy, M.D.?
Near national averagePrimary specialty
Infectious Disease Physician
Medicare Part D claims
50 94% vs specialty avg
MIPS final score
80.5/100 2.6 pts vs avg
Specialty distribution in Wisconsin
How Infectious Disease Physician compares to other specialties among Wisconsin providers
Medicare quality performance, MIPS
Timothy McElroy, M.D.'s 2023 MIPS final score plotted against the Infectious Disease Physician national average
- MIPS Final Score
- 80.5/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Infectious Disease Physician) - 80.5/100 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).
Timothy McElroy, M.D. appears in the CMS NPPES registry as a Infectious Disease Physician provider holding M.D. credentials at 9200 W WISCONSIN AVE, Milwaukee, WI, 53226, with a listed phone of (414) 805-6444. NPI 1477915387 was issued on 03/22/2016.
Medicare Part D records for calendar year 2023 show 50 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $87K in drug spend, split 54% brand-name and 46% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 80.5/100 for the 2023 performance year (Quality 66.2, Cost 68.6), compared with the national average of 83.1.
Infectious Disease Physician is a mid-sized specialty nationwide, with 8,292 enrolled providers across 54 states and an average of 816 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 | 1477915387 |
|---|---|
| Specialty | Infectious Disease Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/22/2016 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
80.4671
Final Score
Avg: 83.1
66.2426
Quality
68.6477
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Timothy McElroy, 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.
The Medical College OF Wisconsin Inc
Milwaukee, WI
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 · Brand-heavy
Timothy McElroy, M.D. - brand share 54.0%
Infectious Disease Physician average
54% brand-name claims vs 46% generic, on 50 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.
50
Total Claims
$87K
Total Drug Cost
16
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 60
- Total Day Supply
- 1,704
- Brand vs Generic
- 54% brand / 46% generic
- Brand Drug Cost
- $86K
- Generic Drug Cost
- $960
Patient Demographics
- Average Patient Age
- 63.0 years
- Avg HCC Risk Score
- 2.39
Infectious Disease Physician Overview
How Timothy McElroy, M.D. fits within the Infectious Disease Physician landscape nationally.
8,292
Infectious Disease Physician Providers in US
54
States with Infectious Disease Physician
816
Avg Claims per Provider
Timothy McElroy, M.D.'s 50 claims are below the specialty average of 816.
Nearby Infectious Disease Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as McElroy.
Dr. Adetunji Adejumo
MD
Green Bay, WI
Dr. William Agger
MD
La Crosse, WI
Dr. Francisco Aguilar
M.D.
Milwaukee, WI
Dr. Syed Ala
MD
Waupaca, WI
Dr. Sol Del Mar Aldrete Audiffred
M.D.
Milwaukee, WI
Compare Infectious 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 Wisconsin medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Infectious 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 Timothy McElroy, M.D.'s specialty? ▼
Timothy McElroy, M.D. specializes in Infectious Disease Physician and practices in Milwaukee, Wisconsin. Credentials: M.D..
How much does Timothy McElroy, M.D. prescribe under Medicare Part D? ▼
In 2023, Timothy McElroy, M.D. wrote 50 Medicare Part D claims totaling $87K in drug costs for 16 beneficiaries.
What is Timothy McElroy, M.D.'s Medicare quality score? ▼
Timothy McElroy, M.D. has a CMS MIPS Final Score of 80.5/100 (Quality: 66.2, Cost: 68.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Timothy McElroy, M.D. located? ▼
Timothy McElroy, M.D. is located at 9200 W WISCONSIN AVE, Milwaukee, WI, 53226. Phone: (414) 805-6444.
What is Timothy McElroy, M.D.'s NPI number? ▼
Timothy McElroy, M.D.'s National Provider Identifier (NPI) is 1477915387, issued on 03/22/2016.
Does Timothy McElroy, M.D. prescribe more brand-name or generic drugs? ▼
Timothy McElroy, M.D.'s prescribing is 54% brand-name and 46% generic drugs by claim count, with $86K in brand drug costs.
How many Infectious Disease Physician providers are there in the US? ▼
There are 8,292 Infectious Disease Physician providers across 54 states in the US. The average Infectious Disease Physician provider writes 816 Medicare Part D claims per year.
Does Timothy McElroy, M.D. accept Medicare? ▼
Timothy McElroy, M.D. appears in CMS Medicare data with 50 Part D claims and 16 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Timothy McElroy, M.D.'s credentials? ▼
Timothy McElroy, M.D.'s NPI is 1477915387 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
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.