2026 NPPES data Specialist NPI 1437122405 MD
Verify on CMS →

ELLEN COMISKEY, MD

Specialist in WAUKESHA, Wisconsin. 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
45
Medicare Part D claims · 20 beneficiaries · Specialist avg: 1K
Generic prescribing
42%
generic claims · 58% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: ELLEN COMISKEY, MD is a Specialist ([object Object]) practicing in WAUKESHA, Wisconsin with a Medicare Part D prescribing footprint of 45 claims across 20 beneficiaries — 58% brand-name prescribing .

What stands out: ELLEN COMISKEY, MD filed 45 Medicare Part D claims in 2023 across WAUKESHA, Wisconsin. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ELLEN COMISKEY, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 02/09/2006

NPI 1437122405

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

45 97% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in Wisconsin

How Specialist compares to other specialties among Wisconsin providers

Wisconsin providers

Specialist share within Wisconsin

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Wisconsin

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Specialist) — 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).

ELLEN COMISKEY, MD is a Specialist provider practicing in WAUKESHA, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1437122405. 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.

ELLEN COMISKEY, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 1111 DELAFIELD ST, WAUKESHA, WI, 53188, with a listed phone of (262) 544-4411. NPI 1437122405 was issued on 02/09/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COMISKEY 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 45 prescription claims written by this provider, covering 20 Medicare beneficiaries and totaling roughly $11K in drug spend, split 58% brand-name and 42% 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.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

1111 DELAFIELD ST
WAUKESHA, WI 53188

Provider Details

NPI 1437122405
Specialty Specialist
Credentials MD
Gender Female
NPI Issued 02/09/2006

Brand vs generic prescribing mix · Brand-heavy

ELLEN COMISKEY, MD — brand share 58.0%
Specialty average (est.)

58% brand-name claims vs 42% generic, on 45 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.

45
Total Claims
$11K
Total Drug Cost
20
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
90
Total Day Supply
2,611
Brand vs Generic
58% brand / 42% generic
Brand Drug Cost
$10K
Generic Drug Cost
$820

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
0.67
Gender Split
100% female / 0% 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
Imvexxy
Estradiol
11

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

Specialist Overview

How ELLEN COMISKEY, MD fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

ELLEN COMISKEY, MD's 45 claims are below the specialty average of 1,474.

Nearby Specialist Providers in Wisconsin

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

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is ELLEN COMISKEY, MD's specialty?
ELLEN COMISKEY, MD specializes in Specialist and practices in WAUKESHA, Wisconsin. Credentials: MD.
How much does ELLEN COMISKEY, MD prescribe under Medicare Part D?
In 2023, ELLEN COMISKEY, MD wrote 45 Medicare Part D claims totaling $11K in drug costs for 20 beneficiaries.
Where is ELLEN COMISKEY, MD located?
ELLEN COMISKEY, MD is located at 1111 DELAFIELD ST, WAUKESHA, WI, 53188. Phone: (262) 544-4411.
What is ELLEN COMISKEY, MD's NPI number?
ELLEN COMISKEY, MD's National Provider Identifier (NPI) is 1437122405, issued on 02/09/2006.
Does ELLEN COMISKEY, MD prescribe more brand-name or generic drugs?
ELLEN COMISKEY, MD's prescribing is 58% brand-name and 42% generic drugs by claim count, with $10K in brand drug costs.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does ELLEN COMISKEY, MD prescribe most often?
Based on 2023 Medicare Part D data, ELLEN COMISKEY, MD's most frequently prescribed drugs include Imvexxy. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELLEN COMISKEY, MD accept Medicare?
ELLEN COMISKEY, MD appears in CMS Medicare data with 45 Part D claims and 20 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELLEN COMISKEY, MD's credentials?
ELLEN COMISKEY, MD's NPI is 1437122405 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