Jonathan P. Marquez
Internal Medicine Physician · Milwaukee, WI
Jonathan P. Marquez is an internal medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1922031699, issued on Jul 8, 2006. Check the license (Wisconsin 49178-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Jonathan P. Marquez
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 49178-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1218 W Kilbourn Ave, Milwaukee, WI 53233
- Phone
- (414) 291-2626
- Enumerated
- Jul 8, 2006
- Record last updated
- Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (414) 291-2630
- Medicaid ID
- 34879100 WI
- Medicare enrollment
- Enrolled (PECOS I20120203000677); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 1218 W Kilbourn Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Adam Basler, M.D.Surgery Physician1376983627
- Elisabeth Biggs, PA-CPhysician Assistant1073754776
- Valerie Black, PA-CPhysician Assistant1710933957
- Rachel Crouch, PA-CPhysician Assistant1780269910
Verify Jonathan P. Marquez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49178-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average internal medicine physician in 2024
9,777 Medicare Part D claims for 1,205 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 768 claims were for opioids.
Most prescribed
- Atorvastatin Calcium645 claims
- Hydrocodone-Acetaminophen362 claims
- Losartan Potassium356 claims
- Lisinopril342 claims
- Amlodipine Besylate325 claims
- Levothyroxine Sodium305 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
- Southern California Permanente Medical GroupRedlands, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan P. Marquez among 2,078 internal medicine physician records in Wisconsin
Jonathan P. Marquez 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
- Graduated2002 · median 2002 among the 1,098 with a school on file
- Record last updated2021 · 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
- Ruric (andy) Anderson, MDMilwaukee, WI 532331205995255
- Robin Brown, M.D.Milwaukee, WI 532331881776458
- Carolina Conti, M.D.Milwaukee, WI 532331750340766
- Ellen Danto-Nocton, M.D.Milwaukee, WI 532331265440002
- Mark Gennis, MDMilwaukee, WI 532331164570644
- Thomas Jackson, MDMilwaukee, WI 532331629186242
- Manuel Joseph, MDMilwaukee, WI 532331447391123
- Ariba Khan, MDMilwaukee, WI 532331891802328
Common questions
What is Jonathan P. Marquez's NPI number?
Jonathan P. Marquez's National Provider Identifier (NPI) is 1922031699, issued on Jul 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan P. Marquez located?
The NPPES record lists a practice address at 1218 W Kilbourn Ave, Milwaukee, WI, 53233. Phone: (414) 291-2626. Providers update this record themselves, so call before visiting.
How can I verify Jonathan P. Marquez's license?
NPPES lists Wisconsin license number 49178-020, 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 Jonathan P. Marquez prescribe under Medicare Part D?
In 2024, Jonathan P. Marquez had 9,777 Medicare Part D claims for 1,205 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.