NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1629225347 DO MPH
Verify on CMS → Leigh Wilson, DO MPH
Internal Medicine Physician in Wallingford, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 174,792 in Internal Medicine 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
277
Medicare Part D claims · 105 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
55%
generic claims · 45% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Leigh Wilson, DO MPH filed 277 Medicare Part D claims in 2024 as an Internal Medicine Physician in Wallingford, Connecticut, prescribing 55% generic.
- 277
- Part D claims, 2024
- 55%
- generic prescribing
- ≥48th
- pct by Part D claim volume (lower-bound band)
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 Leigh Wilson, DO MPH
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1629225347), first enumerated 08/25/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 277 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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 1629225347 · Internal Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1629225347
- ENUM-MID 2008
- TAX-MEGA 175K Internal Medicine
- RX-LIGHT 277
- BOOK-LIGHT 2,830 in Connecticut
- PHOTO-ENUM Farhan Ali, M.D. · 2008
Leigh Wilson, DO MPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
277 ≥ 48th percentile 48% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Leigh Wilson, DO MPH practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Leigh Wilson, DO MPH?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
277 90% vs specialty avg
Specialty distribution in Connecticut
How Internal Medicine Physician compares to other specialties among Connecticut providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:
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 | 1629225347 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | DO MPH |
| Gender | Female |
| NPI Issued | 08/25/2008 |
Brand vs generic prescribing mix · Above average
Leigh Wilson, DO MPH - brand share 45.0%
Internal Medicine Physician average
45% brand-name claims vs 55% generic, on 277 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.
277
Total Claims
$99K
Total Drug Cost
105
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 555.433
- Total Day Supply
- 16,288
- Brand vs Generic
- 45% brand / 55% generic
- Brand Drug Cost
- $92K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 12, 65-74: 68, 75-84: 25, 85+: 0
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Leigh Wilson, DO MPH prescribes most
Top Medicare Part D drugs by claim count, 2024
- Albuterol Sulfate …
Albuterol Sulfate Hfa
45 claims
- Fluticasone Propio…
Fluticasone Propionate
24 claims
- Azelastine Hcl
Azelastine Hcl
20 claims
- Montelukast Sodium
Montelukast Sodium
20 claims
- Famotidine 17
Famotidine
17 claims
- Budesonide-Formote… 15
Budesonide-Formoterol Fumarate
15 claims
- Trelegy Ellipta 15
Trelegy Ellipta
15 claims
- Omeprazole 12
Omeprazole
12 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 45 |
| Fluticasone Propionate | 24 |
| Azelastine Hcl | 20 |
| Montelukast Sodium | 20 |
| Famotidine | 17 |
| Budesonide-Formoterol Fumarate Budesonide/Formoterol Fumarate | 15 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 15 |
| Omeprazole | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Leigh Wilson, DO MPH fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Leigh Wilson, DO MPH's 277 claims are below the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Wilson, both outside Connecticut so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Wilson.
One of 2,830 Internal Medicine Physician providers enrolled in Connecticut, 5 are shown here.
Christina Abavana
Bridgeport, CT
Dr. Hoda Abdel Salam
M.D.
New Britain, CT
Dr. Gada Abdelhafiz
MD
New London, CT
Dr. Mahmoud Abdelrahman
MD
Bridgeport, CT
Simon Abi-Saleh
Bridgeport, CT
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Leigh Wilson, DO MPH's specialty? ▼
Leigh Wilson, DO MPH specializes in Internal Medicine Physician and practices in Wallingford, Connecticut. Credentials: DO MPH.
How much does Leigh Wilson, DO MPH prescribe under Medicare Part D? ▼
In 2024, Leigh Wilson, DO MPH wrote 277 Medicare Part D claims totaling $99K in drug costs for 105 beneficiaries.
Where is Leigh Wilson, DO MPH located? ▼
Leigh Wilson, DO MPH is located at 22 MASONIC AVE, Wallingford, CT, 06492. Phone: (203) 679-5900.
What is Leigh Wilson, DO MPH's NPI number? ▼
Leigh Wilson, DO MPH's National Provider Identifier (NPI) is 1629225347, issued on 08/25/2008.
Does Leigh Wilson, DO MPH prescribe more brand-name or generic drugs? ▼
Leigh Wilson, DO MPH's prescribing is 45% brand-name and 55% generic drugs by claim count, with $92K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Leigh Wilson, DO MPH prescribe most often? ▼
Based on 2024 Medicare Part D data, Leigh Wilson, DO MPH's most frequently prescribed drugs include Albuterol Sulfate Hfa, Fluticasone Propionate, Azelastine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Leigh Wilson, DO MPH accept Medicare? ▼
Leigh Wilson, DO MPH appears in CMS Medicare data with 277 Part D claims and 105 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Leigh Wilson, DO MPH's credentials? ▼
Leigh Wilson, DO MPH's NPI is 1629225347 with credentials DO MPH. 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.
- 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.