John Nicholas Gietzen, D.O.
Family Medicine Physician · New Glarus, WI
John Nicholas Gietzen, D.O. is a family medicine physician with a practice address in New Glarus, Wisconsin, and NPI 1538178025, issued on Aug 5, 2006. Check the license on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Nicholas Gietzen
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 4158 AZ
Self-reported in NPPES; status is on the state search - Practice location
- W5491 Windmill Ridge RD, New Glarus, WI 53574
- Phone
- (608) 518-3654
- Enumerated
- Aug 5, 2006
- Record last updated
- Nov 28, 2022
- Fax
- (928) 277-4942
- Medicare enrollment
- Enrolled (PECOS I20201112000246); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 1985
- Entity
- Type 1 · individual
Verify John Nicholas Gietzen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
6.4 times the Medicare Part D claims of the average family medicine physician in 2024
22,781 Medicare Part D claims for 487 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 317 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,244 claims
- Levothyroxine Sodium925 claims
- Amlodipine Besylate820 claims
- Eliquis649 claims
- Furosemide646 claims
- Sertraline Hcl627 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 MIPS final score for 2023 (Medicare payment program): 59.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Kemell Health LLCNew Glarus, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
2 family medicine physician records list a practice address in New Glarus
They are 2 of the 50 NPPES records with a practice address in New Glarus, and 3,765 family medicine physician records in Wisconsin.
All 2 in New Glarus → All 3,765 in Wisconsin → Every provider in New Glarus →
Other family medicine physician records in Wisconsin
- Ashraf AbbasAppleton, WI1558723775
- Ghudran Abdulal, MDNew Berlin, WI1083622666
- Yusuf Abdullah, DOSun Prairie, WI1437788478
- Vanessa Abejuela-Matt, D.O.Mount Pleasant, WI1558687749
- Emily Abeyta, MDWaukesha, WI1386905107
- Jeanette Abraham, MDWeston, WI1205895810
- Sarada Abraham, M.D.Oconomowoc, WI1962851972
- Kirsten Abramson, MDMadison, WI1417909979
- Alexandra Adams, MD PHDMadison, WI1184689291
- David AdamsMadison, WI1992986897
Common questions
What is John Nicholas Gietzen, D.O.'s NPI number?
John Nicholas Gietzen, D.O.'s National Provider Identifier (NPI) is 1538178025, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Nicholas Gietzen, D.O. located?
The NPPES record lists a practice address at W5491 Windmill Ridge RD, New Glarus, WI, 53574. Phone: (608) 518-3654. Providers update this record themselves, so call before visiting.
How can I verify John Nicholas Gietzen, D.O.'s license?
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 John Nicholas Gietzen, D.O. prescribe under Medicare Part D?
In 2024, John Nicholas Gietzen, D.O. had 22,781 Medicare Part D claims for 487 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is John Nicholas Gietzen, D.O.'s MIPS final score?
The 2023 MIPS final score is 59.2 of 100. 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.