NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1326149238 MD
Verify on CMS → Margaret Bason, MD
Dermatology Physician in Simsbury, 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 14,645 in Dermatology 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
142
Medicare Part D claims · 47 beneficiaries · Dermatology Physician avg: 729
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Margaret Bason, MD filed 142 Medicare Part D claims in 2023 as a Dermatology Physician in Simsbury, Connecticut.
- 142
- Part D claims, 2023
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.
Margaret Bason, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
142 35th percentile higher than 35% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Margaret Bason, MD 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 Margaret Bason, MD?
Quality data not reportedPrimary specialty
Dermatology Physician
Medicare Part D claims
142 81% vs specialty avg
Specialty distribution in Connecticut
How Dermatology 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 Dermatology 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).
Margaret Bason, MD appears in the CMS NPPES registry as a Dermatology Physician provider holding MD credentials at 225 HOPMEADOW STREET, Simsbury, CT, 06089, with a listed phone of (860) 651-1766. NPI 1326149238 was issued on 09/25/2006.
Medicare Part D records for calendar year 2023 show 142 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $7K in drug spend.
Dermatology Physician is a mid-sized specialty nationwide, with 14,645 enrolled providers across 53 states and an average of 729 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 | 1326149238 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 09/25/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
142
Total Claims
$7K
Total Drug Cost
47
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 151
- Total Day Supply
- 3,330
- Generic Drug Cost
- $6K
- Antibiotic Claims
- 19
Patient Demographics
- Average Patient Age
- 72.7 years
- Avg HCC Risk Score
- 0.89
- Gender Split
- 74% female / 26% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Margaret Bason, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ketoconazole
Ketoconazole
24 claims
- Fluocinonide
Fluocinonide
18 claims
- Clobetasol Propion…
Clobetasol Propionate
17 claims
- Clindamycin Phosph…
Clindamycin Phosphate
16 claims
- Cephalexin
Cephalexin
11 claims
- Halobetasol Propio…
Halobetasol Propionate
11 claims
| Drug | Claims |
|---|---|
| Ketoconazole | 24 |
| Fluocinonide | 18 |
| Clobetasol Propionate | 17 |
| Clindamycin Phosphate | 16 |
| Cephalexin | 11 |
| Halobetasol Propionate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Margaret Bason, MD fits within the Dermatology Physician landscape nationally.
14,645
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider
Margaret Bason, MD's 142 claims are below the specialty average of 729.
Nearby Dermatology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Bason.
Dr. Donna Aiudi
M.D.
Farmington, CT
Dr. Michael Albert
M.D.
Newington, CT
Dr. Jeffrey Alter
MD
Waterbury, CT
Dr. Richard Antaya
MD
New Haven, CT
Dr. Nina Antonov
M.D.
Westport, CT
Compare Dermatology 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Dermatology 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
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Explore Connecticut
Frequently Asked Questions
What is Margaret Bason, MD's specialty? ▼
Margaret Bason, MD specializes in Dermatology Physician and practices in Simsbury, Connecticut. Credentials: MD.
How much does Margaret Bason, MD prescribe under Medicare Part D? ▼
In 2023, Margaret Bason, MD wrote 142 Medicare Part D claims totaling $7K in drug costs for 47 beneficiaries.
Where is Margaret Bason, MD located? ▼
Margaret Bason, MD is located at 225 HOPMEADOW STREET, Simsbury, CT, 06089. Phone: (860) 651-1766.
What is Margaret Bason, MD's NPI number? ▼
Margaret Bason, MD's National Provider Identifier (NPI) is 1326149238, issued on 09/25/2006.
How many Dermatology Physician providers are there in the US? ▼
There are 14,645 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does Margaret Bason, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Margaret Bason, MD's most frequently prescribed drugs include Ketoconazole, Fluocinonide, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Margaret Bason, MD accept Medicare? ▼
Margaret Bason, MD appears in CMS Medicare data with 142 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Margaret Bason, MD's credentials? ▼
Margaret Bason, MD's NPI is 1326149238 with credentials MD. 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.
- 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.
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 May 2026.