NPPES file of Aug 9, 2026

Robert M. Greytak, DPM

Podiatrist · Sun Prairie, WI

Robert M. Greytak, DPM is a podiatrist with a practice address in Sun Prairie, Wisconsin, and NPI 1548226079, issued on Apr 24, 2006. Check the license (Wisconsin 557-025, as entered in NPPES) with the Wisconsin board that licenses this profession; 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
1548226079
Name
Robert M. Greytak
Credential
DPM
Primary taxonomy
Podiatrist 213E00000X
License number
557-025 WI
Self-reported in NPPES; status is on the state search
Practice location
10 Tower Dr, Sun Prairie, WI 53590
Phone
(608) 825-3008
Enumerated
Apr 24, 2006
Record last updated
Nov 17, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(608) 825-3707
Medicaid ID
1548226079 WI
Medicare enrollment
Enrolled (PECOS I20050914001345); accepts Medicare assignment
Medical or professional school
California School Of Podiatric Medicine, 1986
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 10 Tower Dr

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

  1. Yusuf Abdullah, DOFamily Medicine Physician1437788478
  2. Holly Anderson, APNPNurse Practitioner1619338555
  3. Anne Arbet, M.D.Pediatrics Physician1699872739
  4. Michael Aughey, MDFamily Medicine Physician1285688044
  5. Eva Balfanz, LPCProfessional Counselor1154796357
  6. Shana Beneteau, PTPhysical Therapist1417919234

Verify Robert M. Greytak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 557-025
    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
Find the Wisconsin license search

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35% fewer Medicare Part D claims than the average podiatrist in 2024

205 Medicare Part D claims for 88 beneficiaries, against an average of 314 among the 6,407 providers of this specialty who prescribed in Part D.

  1. Robert Greytak205
  2. Specialty average314

Most prescribed

  1. Amoxicillin-Clavulanate Potass37 claims
  2. Ciclopirox29 claims
  3. Cephalexin19 claims
  4. Sulfamethoxazole-Trimethoprim19 claims
  5. Ketoconazole13 claims
  6. Nitroglycerin Patch12 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.

Industry payments in 2024: $408.15

10 payments; by number, the most common kind was food and beverage; the largest payer was Mimedx Group, Inc. The 4,596 providers of this specialty with any payment received $2,476.60 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert Greytak$408.15
  2. Specialty average$2,476.60

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

Bills Medicare through one group practice

  1. Dean Health Systems IncSun Prairie, WI

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

Robert M. Greytak among 212 podiatrist records in Wisconsin

Robert M. Greytak, DPM is one of 212 podiatrist 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 2006, is newer than 17% of them.

  • NPI issued2006 · 17% of these records are older, 40% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 73% of these records are
  • Graduated1986 · median 2002 among the 154 with a school on file
  • Record last updated2020 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 213E00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Podiatrist providers in Wisconsin

There are 212 podiatrist records in Wisconsin.

The 8 podiatrist records with the nearest ZIP codes

  1. Randy Kittleson, DPMVerona, WI 535931578539581
  2. Christopher Eckerman, DPMRichland Center, WI 535811851381099
  3. Charles Kind, DPMMonroe, WI 535661245246198
  4. Megan Zainer, DPMJanesville, WI 535481104440882
  5. Kristopher Zainer, DPMJanesville, WI 535481316468531
  6. Gregory Zainer, DPMJanesville, WI 535481548317928
  7. Timothy Axe, DPMJanesville, WI 535461619932621
  8. Catherine Feuerstein, DPMJanesville, WI 535461588892905

Common questions

What is Robert M. Greytak, DPM's NPI number?

Robert M. Greytak, DPM's National Provider Identifier (NPI) is 1548226079, issued on Apr 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert M. Greytak, DPM located?

The NPPES record lists a practice address at 10 Tower Dr, Sun Prairie, WI, 53590. Phone: (608) 825-3008. Providers update this record themselves, so call before visiting.

How can I verify Robert M. Greytak, DPM's license?

NPPES lists Wisconsin license number 557-025, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Robert M. Greytak, DPM prescribe under Medicare Part D?

In 2024, Robert M. Greytak, DPM had 205 Medicare Part D claims for 88 beneficiaries; the average among podiatrist prescribers was 314. 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.

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.