Christopher J. Withers, D.O.
Internal Medicine Physician · Milwaukee, WI
Christopher J. Withers, D.O. is an internal medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1942221114, issued on Jul 22, 2006. Check the license (Wisconsin 45668-021, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Christopher J. Withers
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 45668-021 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2555 N Martin Luther King Dr, Milwaukee, WI 53212
- Phone
- (414) 372-8080
- Enumerated
- Jul 22, 2006
- Record last updated
- Feb 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 43506600 WI
- Medicare enrollment
- Enrolled (PECOS I20040615000347); may accept Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2000
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 2555 N Martin Luther King Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michelle Aumann, DMDGeneral Practice Dentistry1962998260
- Carolyn Aylsworth, RNRegistered Nurse1043456551
- Ada BazemoreDental Hygienist1689089740
- Therese Bowes, PA-CPhysician Assistant1922524206
- Adela Brodek, DDSGeneral Practice Dentistry1740776525
- Tyler Carle, PA-CPhysician Assistant1821512948
Verify Christopher J. Withers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 45668-021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,785 Medicare Part D claims for 656 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 50 claims were for opioids.
Most prescribed
- Atorvastatin Calcium160 claims
- Amlodipine Besylate119 claims
- Metformin Hcl111 claims
- Lisinopril89 claims
- Tamsulosin Hcl73 claims
- Albuterol Sulfate Hfa72 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
- Apogee Medical Group Waukesha SCWaukesha, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher J. Withers among 2,078 internal medicine physician records in Wisconsin
Christopher J. Withers, D.O. 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2000 · median 2002 among the 1,098 with a school on file
- Record last updated2020 · 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.
All 2,078 in Wisconsin → Every provider in Milwaukee → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Alaaeldin Alhessi, MDMilwaukee, WI 532121689265621
- Lisa Benson, MDGlendale, WI 532121780792713
- Brian Hirano, MDMilwaukee, WI 532121770672818
- Adam King, MS, MDMilwaukee, WI 532121932257623
- Gilberto Marquez, M.D.Milwaukee, WI 532121689626731
- Adam Romeiser, M.D.Milwaukee, WI 532121558527044
- Anju Adhikari, MDMilwaukee, WI 532111821449968
- Naveen Bilgi, MDMilwaukee, WI 532111346482775
Common questions
What is Christopher J. Withers, D.O.'s NPI number?
Christopher J. Withers, D.O.'s National Provider Identifier (NPI) is 1942221114, issued on Jul 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher J. Withers, D.O. located?
The NPPES record lists a practice address at 2555 N Martin Luther King Dr, Milwaukee, WI, 53212. Phone: (414) 372-8080. Providers update this record themselves, so call before visiting.
How can I verify Christopher J. Withers, D.O.'s license?
NPPES lists Wisconsin license number 45668-021, 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 Christopher J. Withers, D.O. prescribe under Medicare Part D?
In 2024, Christopher J. Withers, D.O. had 2,785 Medicare Part D claims for 656 beneficiaries; 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.