John Charles O'Horo, M.D.
Infectious Disease Physician · Rochester, MN
John Charles O'Horo, M.D. is an infectious disease physician with a practice address in Rochester, Minnesota, and NPI 1659513364, issued on Mar 26, 2009. Check the license (Minnesota 55738, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- John Charles O'Horo
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- 55738 MN
106294 MN
55076 WI
Self-reported in NPPES; status is on the state search - Practice location
- 200 1St St SW, Rochester, MN 55905
- Phone
- (507) 284-2511
- Enumerated
- Mar 26, 2009
- Record last updated
- Aug 19, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120828000276); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 216 in Minnesota → Look up another NPI →
Also registered at 200 1St St SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kathryn Aaro, P.T.Physical Therapist1619360666
- Danielle Aase, MDReproductive Endocrinology Physician1316524135
- Uzoamaka Abajue, PHARMDPharmacist1982335295
- Francisco Abarca Rendon, MDIndependent Medical Examiner Physician1790096246
Verify John Charles O'Horo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 55738Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average infectious disease physician in 2024
44 Medicare Part D claims for 11 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Methenamine Hippurate16 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.
Industry payments in 2024: $40.04
1 payment: food and beverage; the largest payer was Envista Holdings Corporation. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mayo ClinicRochester, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Charles O'Horo among 216 infectious disease physician records in Minnesota
John Charles O'Horo, M.D. is one of 216 infectious disease physician records with a practice address in Minnesota. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 55% of them.
- NPI issued2009 · 55% of these records are older, 43% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2009 · median 2007 among the 153 with a school on file
- Record last updated2020 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Minnesota
There are 216 infectious disease physician records in Minnesota.
All 216 in Minnesota → Every provider in Rochester → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Larry Baddour, M.D.Rochester, MN 559051669444915
- Randall Edson, M.D.Rochester, MN 559051417933458
- Mary Kasten, M.D.Rochester, MN 559051871572842
- William Marshall, M.D.Rochester, MN 559051508843871
- Douglas Osmon, M.D.Rochester, MN 559051669459665
- Raymund Razonable, M.D.Rochester, MN 559051750351805
- Christine Terrell, M.D.Rochester, MN 559051366421455
- Rodney Thompson, M.D.Rochester, MN 559051962472266
Common questions
What is John Charles O'Horo, M.D.'s NPI number?
John Charles O'Horo, M.D.'s National Provider Identifier (NPI) is 1659513364, issued on Mar 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is John Charles O'Horo, M.D. located?
The NPPES record lists a practice address at 200 1St St SW, Rochester, MN, 55905. Phone: (507) 284-2511. Providers update this record themselves, so call before visiting.
How can I verify John Charles O'Horo, M.D.'s license?
NPPES lists Minnesota license number 55738, 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.
How much does John Charles O'Horo, M.D. prescribe under Medicare Part D?
In 2024, John Charles O'Horo, M.D. had 44 Medicare Part D claims for 11 beneficiaries; the average among infectious disease physician prescribers was 689. 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.