2026 NPPES data Allergy & Immunology Physician NPI 1811950462 M.D.
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WILLIAM SMITS, M.D.

Allergy & Immunology Physician in FORT WAYNE, Indiana. 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
9K
Medicare Part D claims · 1K beneficiaries · Allergy & Immunology Physician avg: 764
MIPS score
87.9593/100
▲ 5 pts above national avg 83.1 · [object Object]
Industry payments
$28.2K
184 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

WILLIAM SMITS, M.D. reported a CMS MIPS final score of 87.9593/100 — above the 83.1 national average — and filed 9,440 Medicare Part D claims in 2023.

87.9593/100
MIPS score · +5 vs avg
9K
Part D claims, 2023
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.

WILLIAM SMITS, 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

88 Top 46% higher than 54% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

Board certification likely (heuristic — not verified)

WILLIAM SMITS, 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 WILLIAM SMITS, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 04/06/2006

NPI 1811950462

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Medicare Part D claims

9,440 1136% vs specialty avg

2023 prescription claims

Specialty avg: 764

MIPS final score

87.9593/100 4.859300000000005% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Indiana

How Allergy & Immunology Physician compares to other specialties among Indiana providers

Indiana providers

Allergy & Immunology Physician share within Indiana

1. Allergy & Immunology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Allergy & Immunology Physician share within Indiana

Medicare quality performance — MIPS

WILLIAM SMITS, M.D.'s 2023 MIPS final score plotted against the Allergy & Immunology Physician national average

High performer (top quartile)
MIPS Final Score
87.9593/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Allergy & Immunology Physician) — 87.9593/100 vs national avg 83.1

0%100%National avg83%88%
MIPS final score (Allergy & Immunology Physician) — 87.9593/100 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 SMITS, M.D. appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding M.D. credentials at 7222 ENGLE ROAD, FORT WAYNE, IN, 46804, with a listed phone of (260) 432-5005. NPI 1811950462 was issued on 04/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SMITS 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 9,440 prescription claims written by this provider, covering 1,052 Medicare beneficiaries and totaling roughly $3.1 million in drug spend. 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 87.9593/100 for the 2023 performance year (Quality 100, Cost 59.8642), compared with the national average of 83.1.

Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 enrolled providers across 52 states and an average of 764 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

7222 ENGLE ROAD
FORT WAYNE, IN 46804

Provider Details

NPI 1811950462
Specialty Allergy & Immunology Physician
Credentials M.D.
Gender Male
NPI Issued 04/06/2006

CMS Quality Score (MIPS)

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

87.9593
Final Score
Avg: 83.1
100
Quality
59.8642
Cost

Reporting: Group practice

Hospital and facility affiliations

Facilities where WILLIAM SMITS, 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.

ALLERGY AND ASTHMA CENTER, PC
FORT WAYNE, IN

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 SMITS, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$28.2K

Largest payer

AstraZeneca Pharmaceuticals LP

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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

9,440
Total Claims
$3.1M
Total Drug Cost
1,052
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15,535
Total Day Supply
445,261
Generic Drug Cost
$186K
Antibiotic Claims
1,077

Patient Demographics

Average Patient Age
70.3 years
Avg HCC Risk Score
1.36
Gender Split
73% female / 27% male
Age Distribution
<65: 197, 65-74: 458, 75-84: 334, 85+: 63

Top Prescribed Drugs (Medicare Part D)

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

What WILLIAM SMITS, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Montelukast Sodium
929
Famotidine
771
Azithromycin
703
Albuterol Sulfate Hfa
Albuterol Sulfate
591
Omeprazole
407
Symbicort
Budesonide/Formoterol Fumarate
331
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
331
Fluticasone Propionate
278
Prednisone
245
Azelastine Hcl
240

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Allergy & Immunology Physician Overview

How WILLIAM SMITS, M.D. fits within the Allergy & Immunology Physician landscape nationally.

3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider

WILLIAM SMITS, M.D.'s 9,440 claims are above the specialty average of 764.

Nearby Allergy & Immunology Physician Providers in Indiana

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

Compare Allergy & Immunology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM SMITS, M.D.'s specialty?
WILLIAM SMITS, M.D. specializes in Allergy & Immunology Physician and practices in FORT WAYNE, Indiana. Credentials: M.D..
How much does WILLIAM SMITS, M.D. prescribe under Medicare Part D?
In 2023, WILLIAM SMITS, M.D. wrote 9,440 Medicare Part D claims totaling $3.1M in drug costs for 1,052 beneficiaries.
What is WILLIAM SMITS, M.D.'s Medicare quality score?
WILLIAM SMITS, M.D. has a CMS MIPS Final Score of 87.9593/100 (Quality: 100, Cost: 59.8642). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is WILLIAM SMITS, M.D. located?
WILLIAM SMITS, M.D. is located at 7222 ENGLE ROAD, FORT WAYNE, IN, 46804. Phone: (260) 432-5005.
What is WILLIAM SMITS, M.D.'s NPI number?
WILLIAM SMITS, M.D.'s National Provider Identifier (NPI) is 1811950462, issued on 04/06/2006.
How many Allergy & Immunology Physician providers are there in the US?
There are 3,390 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does WILLIAM SMITS, M.D. prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM SMITS, M.D.'s most frequently prescribed drugs include Montelukast Sodium, Famotidine, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM SMITS, M.D. accept Medicare?
WILLIAM SMITS, M.D. appears in CMS Medicare data with 9,440 Part D claims and 1,052 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM SMITS, M.D.'s credentials?
WILLIAM SMITS, M.D.'s NPI is 1811950462 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