Zachary Jon Telfer, MD
Internal Medicine Physician · Wauwatosa, WI
Zachary Jon Telfer, MD is an internal medicine physician with a practice address in Wauwatosa, Wisconsin, and NPI 1609339308, issued on Apr 9, 2019. Check the license (Wisconsin 74655-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Zachary Jon Telfer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 74655-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 8701 W Watertown Plank RD, Wauwatosa, WI 53226
- Phone
- (414) 955-8296
- Enumerated
- Apr 9, 2019
- Record last updated
- Feb 19, 2025
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 8701 W Watertown Plank RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha BenzInternal Medicine Physician1255892220
- Jacob Dyer, PHARMDPharmacist1851995690
- Daniel HannaStudent in an Organized Health Care Education/Training Program1518593748
- Jamie HarrimanGenetic Counselor (M.S.)1871051789
- Chehan Herath, MDStudent in an Organized Health Care Education/Training Program1730753070
- Meghan Konda, MDStudent in an Organized Health Care Education/Training Program1295313930
Verify Zachary Jon Telfer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 74655-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
12 Medicare Part D claims, against an average of 3,176 among the 108,855 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.
Zachary Jon Telfer among 2,078 internal medicine physician records in Wisconsin
Zachary Jon Telfer, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 81% of them.
- NPI issued2019 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
45 internal medicine physician records list a practice address in Wauwatosa
They are 45 of the 1,787 NPPES records with a practice address in Wauwatosa, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Wauwatosa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gary Barnas, MDMilwaukee, WI 532261902857329
- Karen Fickel, MDMilwaukee, WI 532261336190255
- Kathlyn Fletcher, MDMilwaukee, WI 532261306897236
- Sandra Green, MDMilwaukee, WI 532261871544692
- Tiffany Hubbard, MDWauwatosa, WI 532261518918093
- Samuel Idarraga, M.D.Wauwatosa, WI 532261700850070
- Jasna Jevtic, MDMilwaukee, WI 532261386695823
- Jack Kaufman, MDMilwaukee, WI 532261740231299
Common questions
What is Zachary Jon Telfer, MD's NPI number?
Zachary Jon Telfer, MD's National Provider Identifier (NPI) is 1609339308, issued on Apr 9, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Jon Telfer, MD located?
The NPPES record lists a practice address at 8701 W Watertown Plank RD, Wauwatosa, WI, 53226. Phone: (414) 955-8296. Providers update this record themselves, so call before visiting.
How can I verify Zachary Jon Telfer, MD's license?
NPPES lists Wisconsin license number 74655-20, 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 Zachary Jon Telfer, MD prescribe under Medicare Part D?
In 2024, Zachary Jon Telfer, MD had 12 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.