NPPES file of Aug 9, 2026

Joseph Aaron Jeffries, MD

Internal Medicine Physician · Milwaukee, WI

Joseph Aaron Jeffries, MD is an internal medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1750918868, issued on Mar 26, 2020. Check the license (Wisconsin 77263-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1750918868
Name
Joseph Aaron Jeffries
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
77263-20 WI
Self-reported in NPPES; status is on the state search
Practice location
8701 W Watertown Plank RD FL 8, Milwaukee, WI 53226
Phone
(414) 955-4578
Enumerated
Mar 26, 2020
Record last updated
Jan 22, 2025
Medicare enrollment
Enrolled (PECOS I20250127000491); accepts Medicare assignment
Medical or professional school
University Of Toledo College Of Medicine, 2020
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 8701 W Watertown Plank RD FL 8

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Zhuchen XuInternal Medicine Physician1396373411

Verify Joseph Aaron Jeffries in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 77263-20
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Midwest Critical Care SCBrookfield, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Joseph Aaron Jeffries among 2,078 internal medicine physician records in Wisconsin

Joseph Aaron Jeffries, 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 2020, is newer than 84% of them.

  • NPI issued2020 · 84% of these records are older, 14% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2020 · median 2002 among the 1,098 with a school on file
  • 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).

382 internal medicine physician records list a practice address in Milwaukee

They are 382 of the 18,389 NPPES records with a practice address in Milwaukee, and 2,078 internal medicine physician records in Wisconsin.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Gary Barnas, MDMilwaukee, WI 532261902857329
  2. Karen Fickel, MDMilwaukee, WI 532261336190255
  3. Kathlyn Fletcher, MDMilwaukee, WI 532261306897236
  4. Sandra Green, MDMilwaukee, WI 532261871544692
  5. Tiffany Hubbard, MDWauwatosa, WI 532261518918093
  6. Samuel Idarraga, M.D.Wauwatosa, WI 532261700850070
  7. Jasna Jevtic, MDMilwaukee, WI 532261386695823
  8. Jack Kaufman, MDMilwaukee, WI 532261740231299

Common questions

What is Joseph Aaron Jeffries, MD's NPI number?

Joseph Aaron Jeffries, MD's National Provider Identifier (NPI) is 1750918868, issued on Mar 26, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Joseph Aaron Jeffries, MD located?

The NPPES record lists a practice address at 8701 W Watertown Plank RD FL 8, Milwaukee, WI, 53226. Phone: (414) 955-4578. Providers update this record themselves, so call before visiting.

How can I verify Joseph Aaron Jeffries, MD's license?

NPPES lists Wisconsin license number 77263-20, 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.

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.