NPPES file of Aug 9, 2026

Daniel Christian Rice Ratzlaff, MD

Family Medicine Physician · Milwaukee, WI

Daniel Christian Rice Ratzlaff, MD is a family medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1366020760, issued on Mar 29, 2021. Check the license (Wisconsin 86401-20, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1366020760
Name
Daniel Christian Rice Ratzlaff
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
86401-20 WI
MD61167274 WA
Self-reported in NPPES; status is on the state search
Practice location
3056 S Kinnickinnic Ave, Milwaukee, WI 53207
Phone
(414) 769-4900
Enumerated
Mar 29, 2021
Record last updated
Oct 6, 2025
Fax
(414) 769-4910
Medicare enrollment
Enrolled (PECOS I20230320001384); accepts Medicare assignment
Medical or professional school
University Of Kansas School Of Med (Kc/Wich/Sal), 2021
Telehealth
Offers telehealth (CMS)
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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8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →

Also registered at 3056 S Kinnickinnic Ave

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

  1. Michael Brewer, DOFamily Medicine Physician1780945857
  2. Eric Brunner, PTAPhysical Therapy Assistant1972493427
  3. Robert Huxley, MDCardiovascular Disease Physician1669412425
  4. Claudia Koch, MDFamily Medicine Physician1891756466
  5. Claude Lataille, NPFamily Nurse Practitioner1558448977
  6. Katlyn MaloneFamily Nurse Practitioner1376373548

Verify Daniel Christian Rice Ratzlaff in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 86401-20    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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84% fewer Medicare Part D claims than the average family medicine physician in 2024

582 Medicare Part D claims for 175 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 32 claims were for opioids.

  1. Daniel Ratzlaff582
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium30 claims
  2. Lisinopril26 claims
  3. Gabapentin23 claims
  4. Levothyroxine Sodium19 claims
  5. Amlodipine Besylate18 claims
  6. Metformin Hcl18 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.

Bills Medicare through 2 group practices

  1. Columbia St Marys Hospital Milwaukee IncMilwaukee, WI
  2. King County Public Hospital District NO 2Kirkland, WA

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

Daniel Christian Rice Ratzlaff among 3,765 family medicine physician records in Wisconsin

Daniel Christian Rice Ratzlaff, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 91% of them.

  • NPI issued2021 · 91% of these records are older, 6% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2021 · median 2007 among the 2,347 with a school on file
  • Record last updated2025 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

299 family medicine physician records list a practice address in Milwaukee

They are 299 of the 18,389 NPPES records with a practice address in Milwaukee, and 3,765 family medicine physician records in Wisconsin.

All 3,765 in Wisconsin → Every provider in Milwaukee → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Michael Brewer, DOMilwaukee, WI 532071780945857
  2. Claudia Koch, MDMilwaukee, WI 532071891756466
  3. Sandra Mahkorn, M.D.Milwaukee, WI 532071376897413
  4. Rebecca Miller, DOMilwaukee, WI 532071760910608
  5. William O'Meally, M.D.Milwaukee, WI 532071992825582
  6. Linda Ward, MDMilwaukee, WI 532071770545030
  7. Shannon Allen-Gryzwa, MDMilwaukee, WI 532081306819479
  8. Joselito Baylon, MDMilwaukee, WI 532081467469296

Common questions

What is Daniel Christian Rice Ratzlaff, MD's NPI number?

Daniel Christian Rice Ratzlaff, MD's National Provider Identifier (NPI) is 1366020760, issued on Mar 29, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Daniel Christian Rice Ratzlaff, MD located?

The NPPES record lists a practice address at 3056 S Kinnickinnic Ave, Milwaukee, WI, 53207. Phone: (414) 769-4900. Providers update this record themselves, so call before visiting.

How can I verify Daniel Christian Rice Ratzlaff, MD's license?

NPPES lists Wisconsin license number 86401-20, 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 Daniel Christian Rice Ratzlaff, MD prescribe under Medicare Part D?

In 2024, Daniel Christian Rice Ratzlaff, MD had 582 Medicare Part D claims for 175 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.