Andrew Ertl, MD
Orthopaedic Surgery Physician · Prairie Du Sac, WI
Andrew Ertl, MD is an orthopaedic surgery physician with a practice address in Prairie Du Sac, Wisconsin, and NPI 1679894943, issued on Jun 21, 2010. Check the license (Wisconsin 66056, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Andrew Ertl
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 66056 WI
Self-reported in NPPES; status is on the state search - Practice location
- 260 26TH St, Prairie Du Sac, WI 53578
- Phone
- (608) 643-2471
- Enumerated
- Jun 21, 2010
- Record last updated
- Jul 21, 2022
- Fax
- (608) 643-4788
- Medicaid ID
- 100058595 WI
- Medicare enrollment
- Enrolled (PECOS I20160914000049); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2010
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 656 in Wisconsin → Look up another NPI →
Also registered at 260 26TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica Armbruster, APSWSocial Worker1730595075
- James Armstrong, NPNurse Practitioner1477518140
- Teresa Bare-InmanPhysical Therapy Assistant1780249243
- Laura Bixby, APNPFamily Nurse Practitioner1508520123
- Kelsey Brady, MSW, LCSWClinical Social Worker1902390768
- Sandra Carroll, CRNACertified Registered Nurse Anesthetist1952086944
Verify Andrew Ertl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 66056Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
15 Medicare Part D claims for 14 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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 one group practice
- Sauk Prairie Healthcare IncPrairie Du Sac, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew Ertl among 656 orthopaedic surgery physician records in Wisconsin
Andrew Ertl, MD is one of 656 orthopaedic surgery physician records with a practice address in Wisconsin. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 70% of them.
- NPI issued2010 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2010 · median 2006 among the 401 with a school on file
- Record last updated2022 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 orthopaedic surgery physician records list a practice address in Prairie Du Sac
They are 7 of the 156 NPPES records with a practice address in Prairie Du Sac, and 656 orthopaedic surgery physician records in Wisconsin.
All 656 in Wisconsin → Every provider in Prairie Du Sac → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Benjamin Cooper, MDPrairie Du Sac, WI 535781750810560
- Matthew Hebert, M.D.Prairie Du Sac, WI 535781912983875
- Michael Lamson, M.D.Prairie Du Sac, WI 535781265418115
- David Marcu, M.D.Prairie Du Sac, WI 535781588600787
- Willi Niedermeier, M.D.Prairie Du Sac, WI 535781770569725
- Arnold Rosenthal, M.D.Prairie Du Sac, WI 535781104802156
- Thomas Beck, MDRichland Center, WI 535811275534679
- Robert Ewart, DORichland Center, WI 535811720669849
Common questions
What is Andrew Ertl, MD's NPI number?
Andrew Ertl, MD's National Provider Identifier (NPI) is 1679894943, issued on Jun 21, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Ertl, MD located?
The NPPES record lists a practice address at 260 26TH St, Prairie Du Sac, WI, 53578. Phone: (608) 643-2471. Providers update this record themselves, so call before visiting.
How can I verify Andrew Ertl, MD's license?
NPPES lists Wisconsin license number 66056, 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 Andrew Ertl, MD prescribe under Medicare Part D?
In 2024, Andrew Ertl, MD had 15 Medicare Part D claims for 14 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.