Zachary Singer
Family Medicine Physician · Mequon, WI
Zachary Singer is a family medicine physician with a practice address in Mequon, Wisconsin, and NPI 1225371727, issued on Apr 3, 2013. Check the license (Wisconsin 65416-021, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Zachary Singer
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 65416-021 WI
Self-reported in NPPES; status is on the state search - Practice location
- 6425 W Mequon RD, Mequon, WI 53092
- Phone
- (262) 242-0051
- Enumerated
- Apr 3, 2013
- Record last updated
- Aug 26, 2025
- Fax
- (262) 236-8780
- Medicaid ID
- 100059718 WI
- Medicare enrollment
- Enrolled (PECOS I20160901001464); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 6425 W Mequon RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Krista Dyreson, M.D.Family Medicine Physician1063702801
- Taylor Gardner, NPNurse Practitioner1881432797
- Camille Gonzalez, MDFamily Medicine Physician1427622117
- Jonathan Katz, MDFamily Medicine Physician1144806753
Verify Zachary Singer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 65416-021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% more Medicare Part D claims than the average family medicine physician in 2024
4,911 Medicare Part D claims for 466 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.
Most prescribed
- Atorvastatin Calcium413 claims
- Losartan Potassium295 claims
- Amlodipine Besylate284 claims
- Rosuvastatin Calcium240 claims
- Lisinopril198 claims
- Metoprolol Succinate193 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
- Aurora Advanced Healthcare, Inc.Mequon, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Singer among 3,765 family medicine physician records in Wisconsin
Zachary Singer is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2013 · median 2007 among the 2,347 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 family medicine physician records list a practice address in Mequon
They are 26 of the 1,048 NPPES records with a practice address in Mequon, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Mequon → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Nicola Charlton, M.D.Mequon, WI 530921326050436
- Robert Frank, MDMequon, WI 530921659303899
- Michael Gerard, MDMequon, WI 530921598742652
- Richard Lewis, M.D.Mequon, WI 530921306819305
- Gary Lewis, MDThiensville, WI 530921194762765
- Paul Mankus, MDMequon, WI 530921639131998
- Anne Mattson, MDMequon, WI 530921598799496
- Larisa Mazur, MDThiensville, WI 530921861565202
Common questions
What is Zachary Singer's NPI number?
Zachary Singer's National Provider Identifier (NPI) is 1225371727, issued on Apr 3, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Singer located?
The NPPES record lists a practice address at 6425 W Mequon RD, Mequon, WI, 53092. Phone: (262) 242-0051. Providers update this record themselves, so call before visiting.
How can I verify Zachary Singer's license?
NPPES lists Wisconsin license number 65416-021, 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 Zachary Singer prescribe under Medicare Part D?
In 2024, Zachary Singer had 4,911 Medicare Part D claims for 466 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.