NPPES file of Aug 9, 2026

Ryan L. Holzwarth, MD

Dermatology Physician · Chippewa Falls, WI

Ryan L. Holzwarth, MD is a dermatology physician with a practice address in Chippewa Falls, Wisconsin, and NPI 1437102324, issued on May 19, 2006. Check the license (Wisconsin 74824, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1437102324
Name
Ryan L. Holzwarth
Credential
MD
Primary taxonomy
Dermatology Physician 207N00000X
License numbers
74824 WI
64615 MN
10214 ND
Self-reported in NPPES; status is on the state search
Practice location
2815 County Highway I, Chippewa Falls, WI 54729
Phone
(715) 438-8255
Enumerated
May 19, 2006
Record last updated
Dec 4, 2025
Medicare enrollment
Enrolled (PECOS I20210415002726); may accept Medicare assignment
Medical or professional school
University Of North Dakota School Of Medicine, 2002
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2815 County Highway I

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Daniel AzarshinSpeech-Language Pathologist1659295517
  2. Elizabeth Beaulieu, PTAPhysical Therapy Assistant1730658063
  3. Mary BirtzerPhysical Therapy Assistant1093114225
  4. Elem Borges Moura, PA-CPhysician Assistant1881562171
  5. Janice Derhaag, OTROccupational Therapist1538323415
  6. Cindy Downs, PA-CPhysician Assistant1376262113

Verify Ryan L. Holzwarth in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 74824
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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56% more Medicare Part D claims than the average dermatology physician in 2024

1,246 Medicare Part D claims for 515 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Ryan Holzwarth1,246
  2. Specialty average797

Most prescribed

  1. Clobetasol Propionate178 claims
  2. Ketoconazole162 claims
  3. Mupirocin128 claims
  4. Triamcinolone Acetonide122 claims
  5. Cephalexin53 claims
  6. Desonide51 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score100.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $20.59

1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ryan Holzwarth$20.59
  2. Specialty average$8,544.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Oakleaf Clinics IncChippewa Falls, WI
  2. Tareen Dermatology PAHudson, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ryan L. Holzwarth among 325 dermatology physician records in Wisconsin

Ryan L. Holzwarth, MD is one of 325 dermatology physician records with a practice address in Wisconsin. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 57% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2002 · median 2009 among the 228 with a school on file
  • Record last updated2025 · 43% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in Wisconsin

There are 325 dermatology physician records in Wisconsin.

The 8 dermatology physician records with the nearest ZIP codes

  1. Kunle Onade, MDChippewa Falls, WI 547291790094704
  2. Mary Lou Ernst-Woodhouse, DOEau Claire, WI 547031225102452
  3. Emily Fibeger, DOEau Claire, WI 547031508026980
  4. Sterling McKissack, M.D.Eau Claire, WI 547031285033290
  5. Johann Peikert, MDEau Claire, WI 547031881673044
  6. Stephanie Tadayon, MDEau Claire, WI 547031134650476
  7. Joy Walker, MDEau Claire, WI 547031033198429
  8. Lon Christianson, MDEau Claire, WI 547011760461156

Common questions

What is Ryan L. Holzwarth, MD's NPI number?

Ryan L. Holzwarth, MD's National Provider Identifier (NPI) is 1437102324, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ryan L. Holzwarth, MD located?

The NPPES record lists a practice address at 2815 County Highway I, Chippewa Falls, WI, 54729. Phone: (715) 438-8255. Providers update this record themselves, so call before visiting.

How can I verify Ryan L. Holzwarth, MD's license?

NPPES lists Wisconsin license number 74824, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Ryan L. Holzwarth, MD prescribe under Medicare Part D?

In 2024, Ryan L. Holzwarth, MD had 1,246 Medicare Part D claims for 515 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

What is Ryan L. Holzwarth, MD's MIPS final score?

The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.