John G. Mulrooney, MD
Internal Medicine Physician · Winona, MN
John G. Mulrooney, MD is an internal medicine physician with a practice address in Winona, Minnesota, and NPI 1275543829, issued on Aug 8, 2006. Check the license (Minnesota 17366, as entered in NPPES) on the Minnesota Board of Medical Practice; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John G. Mulrooney
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 17366 MN
Self-reported in NPPES; status is on the state search - Practice location
- 859 Mankato Avenue, Winona, MN 55987
- Phone
- (507) 454-3680
- Enumerated
- Aug 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (507) 457-7672
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,632 in Minnesota → Look up another NPI →
Also registered at 859 Mankato Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John G. Mulrooney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 17366Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John G. Mulrooney among 2,632 internal medicine physician records in Minnesota
John G. Mulrooney, MD is one of 2,632 internal medicine physician records with a practice address in Minnesota. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2007 · 57% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 internal medicine physician records list a practice address in Winona
They are 11 of the 876 NPPES records with a practice address in Winona, and 2,632 internal medicine physician records in Minnesota. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,632 in Minnesota → Every provider in Winona → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Horace Andersen, MN 18091Winona, MN 559871659510659
- Andrew Edin, MDWinona, MN 559871053428508
- Arnold Fenske, MDWinona, MN 559871831109495
- Richard Ferris, MDWinona, MN 559871245347780
- Katrina Hammel, M.D.Winona, MN 559871780894527
- Joseph Kaiya, MDWinona, MN 559871134550544
- Robert Neilson, M.D.Winona, MN 559871952390338
- Dennis Nolan, MDWinona, MN 559871619987278
Common questions
What is John G. Mulrooney, MD's NPI number?
John G. Mulrooney, MD's National Provider Identifier (NPI) is 1275543829, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John G. Mulrooney, MD located?
The NPPES record lists a practice address at 859 Mankato Avenue, Winona, MN, 55987. Phone: (507) 454-3680. Providers update this record themselves, so call before visiting.
How can I verify John G. Mulrooney, MD's license?
NPPES lists Minnesota license number 17366, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. 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. 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.