Alexander Jon Zenzick, M.D.
Anesthesiology Physician · Neenah, WI
Alexander Jon Zenzick, M.D. is an anesthesiology physician with a practice address in Neenah, Wisconsin, and NPI 1013984343, issued on Mar 7, 2006. Check the license (Wisconsin 46945-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Alexander Jon Zenzick
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 46945-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 333 N Commercial St, Neenah, WI 54956
- Phone
- (920) 527-8086
- Enumerated
- Mar 7, 2006
- Record last updated
- Dec 28, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101019000647); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2002
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,313 in Wisconsin → Look up another NPI →
Also registered at 333 N Commercial St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alexander Jon Zenzick in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 46945-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Association OF Hospital Anesthesiologists SCNeenah, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Jon Zenzick among 1,313 anesthesiology physician records in Wisconsin
Alexander Jon Zenzick, M.D. is one of 1,313 anesthesiology physician records with a practice address in Wisconsin. 72% 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 20% of them.
- NPI issued2006 · 20% of these records are older, 49% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2002 · median 2006 among the 872 with a school on file
- Record last updated2012 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 anesthesiology physician records list a practice address in Neenah
They are 16 of the 919 NPPES records with a practice address in Neenah, and 1,313 anesthesiology physician records in Wisconsin.
All 1,313 in Wisconsin → Every provider in Neenah → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Robert Anderson, M.D.Neenah, WI 549561679672638
- Scott Behrens, MDNeenah, WI 549561760479737
- Jerome Bormes, MDNeenah, WI 549561477540631
- Man Choi, MDNeenah, WI 549561538157250
- Angie Geiger, M.D.Neenah, WI 549561841639598
- Robin Goldsmith, MDNeenah, WI 549561962490680
- Frederick Groutage, M.D.Neenah, WI 549561336312537
- John Kidd, MDNeenah, WI 549561538157201
Common questions
What is Alexander Jon Zenzick, M.D.'s NPI number?
Alexander Jon Zenzick, M.D.'s National Provider Identifier (NPI) is 1013984343, issued on Mar 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Jon Zenzick, M.D. located?
The NPPES record lists a practice address at 333 N Commercial St, Neenah, WI, 54956. Phone: (920) 527-8086. Providers update this record themselves, so call before visiting.
How can I verify Alexander Jon Zenzick, M.D.'s license?
NPPES lists Wisconsin license number 46945-020, 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.
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.