William V. Zemnickas, D.O
Surgery Physician · Lapeer, MI
William V. Zemnickas, D.O is a surgery physician with a practice address in Lapeer, Michigan, and NPI 1568553667, issued on Sep 27, 2006. Check the license (Michigan WZ007094, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- William V. Zemnickas
- Credential
- D.O
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- WZ007094 MI
Self-reported in NPPES; status is on the state search - Practice location
- 844 S Main St, Lapeer, MI 48446
- Phone
- (810) 664-4100
- Enumerated
- Sep 27, 2006
- Record last updated
- Nov 28, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (810) 664-9250
- Medicaid ID
- 136702910 MI
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 1,376 in Michigan → Look up another NPI →
Also registered at 844 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ratan Rajani, MDSurgery Physician1831297621
- Forrest Robart, D.O.Surgery Physician1871567834
Verify William V. Zemnickas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license WZ007094Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average surgery physician in 2024
28 Medicare Part D claims for 27 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
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.
William V. Zemnickas among 1,376 surgery physician records in Michigan
William V. Zemnickas, D.O is one of 1,376 surgery physician records with a practice address in Michigan. 74% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 62% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2017 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Michigan
There are 1,376 surgery physician records in Michigan.
All 1,376 in Michigan → Every provider in Lapeer → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Mayo Mitsuya, DOLapeer, MI 484461164788386
- Nicholas Nunnally, D.O.Lapeer, MI 484461043436462
- Vrutant Patel, MDLapeer, MI 484461285297242
- Ratan Rajani, MDLapeer, MI 484461831297621
- Forrest Robart, D.O.Lapeer, MI 484461871567834
- Robert Stenz, D.O.Lapeer, MI 484461114908977
- Adam Pentel, DOHolly, MI 484421225219330
- Lisa Brambert, DOGrand Blanc, MI 484391457296782
Common questions
What is William V. Zemnickas, D.O's NPI number?
William V. Zemnickas, D.O's National Provider Identifier (NPI) is 1568553667, issued on Sep 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William V. Zemnickas, D.O located?
The NPPES record lists a practice address at 844 S Main St, Lapeer, MI, 48446. Phone: (810) 664-4100. Providers update this record themselves, so call before visiting.
How can I verify William V. Zemnickas, D.O's license?
NPPES lists Michigan license number WZ007094, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William V. Zemnickas, D.O prescribe under Medicare Part D?
In 2024, William V. Zemnickas, D.O had 28 Medicare Part D claims for 27 beneficiaries; the average among surgery physician prescribers was 147. 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.