Mark L. Goelzer, MD
Pediatrics Physician · Janesville, WI
Mark L. Goelzer, MD is a pediatrics physician with a practice address in Janesville, Wisconsin, and NPI 1619902111, issued on Jul 12, 2006. Check the license (Wisconsin 21490-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mark L. Goelzer
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 21490-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3524 E Milwaukee St, Janesville, WI 53546
- Phone
- (608) 756-7100
- Enumerated
- Jul 12, 2006
- Record last updated
- Sep 23, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (608) 756-4700
- Medicaid IDs
- 30170700 WI
1619902111 WI - Medicare enrollment
- Enrolled (PECOS I20040302000864); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1973
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,203 in Wisconsin → Look up another NPI →
Also registered at 3524 E Milwaukee St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kristine Arndt, MDInternal Medicine Physician1720442809
- Mary Augustian, MDPediatrics Physician1295259513
- Hamid Bashir, MDRheumatology Physician1225257694
- Ryndon Bautista, M.D.Internal Medicine Physician1225230170
Verify Mark L. Goelzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 21490-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 96% of the cost of the top drugs
267 Medicare Part D claims for 173 beneficiaries, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 96% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Shingrix96 claims
- Arexvy79 claims
- Boostrix Tdap26 claims
- Acthib11 claims
- Ipol11 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
- Mercy Health System CorporationJanesville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark L. Goelzer among 1,203 pediatrics physician records in Wisconsin
Mark L. Goelzer, MD is one of 1,203 pediatrics physician records with a practice address in Wisconsin. 20% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 49% newer
- In a Medicare fileYes · 20% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated1973 · median 2012 among the 142 with a school on file
- Record last updated2014 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatrics Physician providers in Wisconsin
There are 1,203 pediatrics physician records in Wisconsin.
All 1,203 in Wisconsin → Every provider in Janesville → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Daniel Beardmore, D.O.Janesville, WI 535461750794962
- Melissa Bent, MDJanesville, WI 535461790005353
- Mark Boettcher, MDJanesville, WI 535461750325155
- Kristen Goelzer, MDJanesville, WI 535461275686933
- Christal Gordon, MDJanesville, WI 535461558414243
- Elizabeth Loconto, DOJanesville, WI 535461699017178
- Alfredo Mendoza, MDJanesville, WI 535461346281649
- Patrick Meyer, MDJanesville, WI 535461679517080
Common questions
What is Mark L. Goelzer, MD's NPI number?
Mark L. Goelzer, MD's National Provider Identifier (NPI) is 1619902111, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark L. Goelzer, MD located?
The NPPES record lists a practice address at 3524 E Milwaukee St, Janesville, WI, 53546. Phone: (608) 756-7100. Providers update this record themselves, so call before visiting.
How can I verify Mark L. Goelzer, MD's license?
NPPES lists Wisconsin license number 21490-20, 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 Mark L. Goelzer, MD prescribe under Medicare Part D?
In 2024, Mark L. Goelzer, MD had 267 Medicare Part D claims for 173 beneficiaries; the average among pediatrics physician prescribers was 375. 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.