NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1811950462 M.D.
Verify on CMS → William Smits, M.D.
Allergy & Immunology Physician in Fort Wayne, Indiana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,412 in Allergy & Immunology 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
10K
Medicare Part D claims · 1K beneficiaries · Allergy & Immunology Physician avg: 788
Generic prescribing
69%
generic claims · 31% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
88/100
▲ 4 pts above national avg 83.5 · Above neutral
Industry payments
$28.2K
184 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
William Smits, M.D. reported a CMS MIPS final score of 88/100 - above the 83.5 national average - and filed 10,466 Medicare Part D claims in 2024.
- 88/100
- MIPS score · +4 vs avg
- 10K
- Part D claims, 2024
- 69%
- 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 Smits, M.D.
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 1811950462), first enumerated 04/06/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 10,466 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 88/100 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
$28.2K in reported industry payments (184 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 1811950462 · Allergy & Immunology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-ABOVE · RX-HEAVY · BOOK-THIN · PHOTO-FINISH
- NPI-10 1811950462
- ENUM-LEGACY 2006
- TAX-NARROW 3,412
- MIPS-ABOVE 88/100
- RX-HEAVY 10K claims
- BOOK-THIN 49 in Indiana
- PHOTO-FINISH Stephen Derbes, MD · ±0.1
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Taylor Atchley, …
Taylor Atchley, MD
87.7 MIPS pts
- Smits · this pro…
Smits · this provider
88 MIPS pts
- Michelle Korah-S…
Michelle Korah-Sedgwick, M.D.
88.1 MIPS pts
- Stephen Derbes, …
Stephen Derbes, MD
88.1 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
William Smits, M.D.'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.
88 ≥ 52nd percentile 52% 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 Smits, M.D. sits
This provider among allergy & immunology physician peers
Across the 659 allergy & immunology physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Smits, M.D. writes more Part D claims than 99% of them and scores higher on MIPS quality than 63% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one allergy & immunology physician peer from a representative sample of 60; the gold marker is William Smits, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 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)Primary specialty
Allergy & Immunology Physician
Medicare Part D claims
10,466 13× vs specialty avg
MIPS final score
88/100 4.5 pts vs avg
Specialty distribution in Indiana
How Allergy & Immunology Physician compares to other specialties among Indiana providers
Medicare quality performance, MIPS
William Smits, M.D.'s 2023 MIPS final score plotted against the Allergy & Immunology Physician national average
- MIPS Final Score
- 88/100
- 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 | 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
Measured-score avg: 83.5
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.
Brand vs generic prescribing mix · Above average
William Smits, M.D. - brand share 31.0%
Allergy & Immunology Physician average
31% brand-name claims vs 69% generic, on 10,466 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.
10,466
Total Claims
$3.2M
Total Drug Cost
1,138
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 17,103
- Total Day Supply
- 491,206
- Brand vs Generic
- 31% brand / 69% generic
- Brand Drug Cost
- $3.0M
- Generic Drug Cost
- $173K
- Antibiotic Claims
- 1,166
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 1.40
- Gender Split
- 73% female / 27% male
- Age Distribution
- <65: 199, 65-74: 522, 75-84: 351, 85+: 66
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Smits, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Montelukast Sodium
Montelukast Sodium
920 claims
- Famotidine
Famotidine
856 claims
- Azithromycin
Azithromycin
799 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
635 claims
- Omeprazole
Omeprazole
440 claims
- Trelegy Ellipta
Trelegy Ellipta
387 claims
- Fluticasone Propio… 285
Fluticasone Propionate
285 claims
- Prednisone 272
Prednisone
272 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 920 |
| Famotidine | 856 |
| Azithromycin | 799 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 635 |
| Omeprazole | 440 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 387 |
| Fluticasone Propionate | 285 |
| Prednisone | 272 |
| Symbicort Budesonide/Formoterol Fumarate | 271 |
| Azelastine Hcl | 260 |
* 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.
3,412
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
788
Avg Claims per Provider
William Smits, M.D.'s 10,466 claims are above the specialty average of 788.
Nationwide Allergy & Immunology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Smits, both outside Indiana so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (88 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 49 Allergy & Immunology Physician providers enrolled in Indiana, 5 are shown here.
Dr. Muhammad Afzal
M.D.
New Castle, IN
Dr. Sohaib Aleem
MD
South Bend, IN
Dr. Frank Amodio
MD
Evansville, IN
Dr. Christina Barnes
MD
South Bend, IN
Dr. Jillian Belmonte
MD
Indianapolis, IN
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 2024, William Smits, M.D. wrote 10,466 Medicare Part D claims totaling $3.2M in drug costs for 1,138 beneficiaries.
What is William Smits, M.D.'s Medicare quality score? ▼
William Smits, M.D. has a CMS MIPS Final Score of 88/100 (Quality: 100, Cost: 59.9). 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 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.
Does William Smits, M.D. prescribe more brand-name or generic drugs? ▼
William Smits, M.D.'s prescribing is 31% brand-name and 69% generic drugs by claim count, with $3.0M in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,412 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 788 Medicare Part D claims per year.
What drugs does William Smits, M.D. prescribe most often? ▼
Based on 2024 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 10,466 Part D claims and 1,138 Medicare beneficiaries in 2024. 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
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.