2026 NPPES data Dermatology Physician NPI 1326149238 MD
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MARGARET BASON, MD

Dermatology Physician in SIMSBURY, Connecticut. 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
142
Medicare Part D claims · 47 beneficiaries · Dermatology Physician avg: 729
What the federal data reveals: MARGARET BASON, MD is a Dermatology Physician ([object Object]) practicing in SIMSBURY, Connecticut with a Medicare Part D prescribing footprint of 142 claims across 47 beneficiaries .

What stands out: MARGARET BASON, MD filed 142 Medicare Part D claims in 2023 across SIMSBURY, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

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).

MARGARET BASON, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 09/25/2006

NPI 1326149238

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

142 81% vs specialty avg

2023 prescription claims

Specialty avg: 729

Specialty distribution in Connecticut

How Dermatology Physician compares to other specialties among Connecticut providers

Connecticut providers

Dermatology Physician share within Connecticut

1. Dermatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Dermatology Physician share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Dermatology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Dermatology Physician ABMS/AOA estimate

Est. board-certified rate (Dermatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Dermatology Physician) — ABMS / AOA estimate

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 is a Dermatology Physician provider practicing in SIMSBURY, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1326149238. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BASON 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 142 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $7K 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.

Dermatology Physician is a mid-sized specialty nationwide, with 14,610 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

225 HOPMEADOW STREET
SIMSBURY, CT 06089

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.

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.

14,610
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.

Compare Dermatology Physician nationally: see state-by-state distribution →

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 14,610 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

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