What is Clayton Marcinak's NPI number?

Clayton Marcinak's National Provider Identifier (NPI) is 1124589247, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Clayton Marcinak's specialty?

Clayton Marcinak is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).

Where is Clayton Marcinak located?

Clayton Marcinak's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792-0001.

What is Clayton Marcinak's phone number?

The practice phone number listed in the NPPES registry for Clayton Marcinak is (608) 263-6400.

Does Clayton Marcinak accept Medicare?

Clayton Marcinak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Clayton Marcinak's NPI active?

Yes — Clayton Marcinak's NPI (1124589247) is active in the NPPES registry as of the last update on 2021-06-21.

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Clayton Marcinak, MD

NPI 1124589247 · Surgery Physician · Madison, WI

Clayton Marcinak, MD is a Surgery Physician provider in Madison, WI (NPI 1124589247).

Provider details

NPI number: 1124589247
Entity type: Individual
Primary specialty: Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 75355 (WI)

Practice location

600 Highland Ave

Madison, WI 53792-0001

Phone: (608) 263-6400

Street-level locationGet directions

More WI providers

Mailing address

600 Highland Ave

Madison, WI 53792-0001

Specialties & taxonomies

Surgery PhysicianPrimary208600000XLicense 75355 (WI)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Order and Referring Only - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(71/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure33% of score
7 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)	Beneficiaries
Oxycodone Hcl	17	16

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$1,000 across 1 record (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2019-03-29
Last updated: 2021-06-21
Certified: 2021-06-21

Frequently asked questions

What is Clayton Marcinak's NPI number?: Clayton Marcinak's National Provider Identifier (NPI) is 1124589247, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Clayton Marcinak's specialty?: Clayton Marcinak is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
Where is Clayton Marcinak located?: Clayton Marcinak's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792-0001.
What is Clayton Marcinak's phone number?: The practice phone number listed in the NPPES registry for Clayton Marcinak is (608) 263-6400.
Does Clayton Marcinak accept Medicare?: Clayton Marcinak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Clayton Marcinak's NPI active?: Yes — Clayton Marcinak's NPI (1124589247) is active in the NPPES registry as of the last update on 2021-06-21.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)	Beneficiaries
Oxycodone Hcl	17	16

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$1,000 across 1 record (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Frequently asked questions