2026 NPPES data Dermatology Physician NPI 1639138720 M.D.
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KAREN CHAPEL, M.D.

Dermatology Physician in DEARBORN, Michigan. 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
1K
Medicare Part D claims · 497 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
▼ 8 pts below national avg 83.1 · [object Object]
What the federal data reveals: KAREN CHAPEL, M.D. is a Dermatology Physician ([object Object]) practicing in DEARBORN, Michigan with a Medicare Part D prescribing footprint of 1K claims across 497 beneficiaries — 6% brand-name prescribing . Their CMS MIPS Final Score of 75/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: KAREN CHAPEL, M.D. reported a CMS MIPS final score of 75 out of 100, below the 83.1 national average, and filed 1,089 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

KAREN CHAPEL, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

KAREN CHAPEL, M.D. at a glance

Below national average

NPI registry status

Active

Issued 03/20/2006

NPI 1639138720

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

1,089 49% vs specialty avg

2023 prescription claims

Specialty avg: 729

MIPS final score

75/100 8.099999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Michigan

How Dermatology Physician compares to other specialties among Michigan providers

Michigan providers

Dermatology Physician share within Michigan

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

Medicare quality performance — MIPS

KAREN CHAPEL, M.D.'s 2023 MIPS final score plotted against the Dermatology Physician national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Dermatology Physician) — 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (Dermatology Physician) — 75/100 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).

KAREN CHAPEL, M.D. is a Dermatology Physician provider practicing in DEARBORN, Michigan, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1639138720. 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.

KAREN CHAPEL, M.D. appears in the CMS NPPES registry as a Dermatology Physician provider holding M.D. credentials at 2814 MONROE, DEARBORN, MI, 48124, with a listed phone of (313) 561-5311. NPI 1639138720 was issued on 03/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAPEL 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 1,089 prescription claims written by this provider, covering 497 Medicare beneficiaries and totaling roughly $110K in drug spend, split 6% brand-name and 94% generic by claim count. 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 75/100 for the 2023 performance year, compared with the national average of 83.1.

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

2814 MONROE
DEARBORN, MI 48124

Provider Details

NPI 1639138720
Specialty Dermatology Physician
Credentials M.D.
Gender Female
NPI Issued 03/20/2006

CMS Quality Score (MIPS)

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

75
Final Score
Avg: 83.1

Reporting: Individual

License & disciplinary context — Michigan MI-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 — they are NOT specific to KAREN CHAPEL, M.D.. To verify KAREN CHAPEL, M.D.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

KAREN CHAPEL, M.D. — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 1,089 2023 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 2023.

1,089
Total Claims
$110K
Total Drug Cost
497
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,316
Total Day Supply
34,370
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$80K
Generic Drug Cost
$30K
Antibiotic Claims
40

Patient Demographics

Average Patient Age
76.7 years
Avg HCC Risk Score
1.16
Gender Split
52% female / 48% 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
Triamcinolone Acetonide
202
Hydrocortisone
107
Metronidazole
92
Clobetasol Propionate
88
Ammonium Lactate
81
Ketoconazole
58
Econazole Nitrate
49
Calcipotriene
47
Valacyclovir
Valacyclovir Hcl
47
Fluorouracil
38

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

Dermatology Physician Overview

How KAREN CHAPEL, M.D. fits within the Dermatology Physician landscape nationally.

14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

KAREN CHAPEL, M.D.'s 1,089 claims are above the specialty average of 729.

Nearby Dermatology Physician Providers in Michigan

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

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

Frequently Asked Questions

What is KAREN CHAPEL, M.D.'s specialty?
KAREN CHAPEL, M.D. specializes in Dermatology Physician and practices in DEARBORN, Michigan. Credentials: M.D..
How much does KAREN CHAPEL, M.D. prescribe under Medicare Part D?
In 2023, KAREN CHAPEL, M.D. wrote 1,089 Medicare Part D claims totaling $110K in drug costs for 497 beneficiaries.
What is KAREN CHAPEL, M.D.'s Medicare quality score?
KAREN CHAPEL, M.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is KAREN CHAPEL, M.D. located?
KAREN CHAPEL, M.D. is located at 2814 MONROE, DEARBORN, MI, 48124. Phone: (313) 561-5311.
What is KAREN CHAPEL, M.D.'s NPI number?
KAREN CHAPEL, M.D.'s National Provider Identifier (NPI) is 1639138720, issued on 03/20/2006.
Does KAREN CHAPEL, M.D. prescribe more brand-name or generic drugs?
KAREN CHAPEL, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $80K in brand drug costs.
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 KAREN CHAPEL, M.D. prescribe most often?
Based on 2023 Medicare Part D data, KAREN CHAPEL, M.D.'s most frequently prescribed drugs include Triamcinolone Acetonide, Hydrocortisone, Metronidazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KAREN CHAPEL, M.D. accept Medicare?
KAREN CHAPEL, M.D. appears in CMS Medicare data with 1,089 Part D claims and 497 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KAREN CHAPEL, M.D.'s credentials?
KAREN CHAPEL, M.D.'s NPI is 1639138720 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