John F. Herath, MD
Internal Medicine Physician · Onalaska, WI
John F. Herath, MD is an internal medicine physician with a practice address in Onalaska, Wisconsin, and NPI 1740286913, issued on Jun 22, 2005. Check the license (Wisconsin 42729, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John F. Herath
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 42729 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3111 Gundersen Dr, Onalaska, WI 54650
- Phone
- (608) 782-7300
- Enumerated
- Jun 22, 2005
- Record last updated
- Jun 2, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 34043800 WI
- Medicare enrollment
- Enrolled (PECOS I20100813001028); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1999
- 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 3111 Gundersen Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Addison, D.O.Internal Medicine Physician1295268571
- Sarah Almonroeder, PA-CMedical Physician Assistant1598049322
- Joseph Angell, ATCAthletic Trainer1578556056
- Kellie Backman, APNPFamily Nurse Practitioner1639171895
- Janet Bahr, NPAdult Health Nurse Practitioner1619163276
- Kelley Bahr, MDFamily Medicine Physician1366441297
Verify John F. Herath in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 42729Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,589 Medicare Part D claims for 620 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 346 claims were for opioids.
Most prescribed
- Atorvastatin Calcium601 claims
- Lisinopril493 claims
- Omeprazole463 claims
- Metoprolol Succinate360 claims
- Simvastatin307 claims
- Amlodipine Besylate296 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 2 group practices
- Gundersen Clinic LtdSparta, WI
- Gundersen Lutheran Medical Center IncLa Crosse, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John F. Herath among 2,078 internal medicine physician records in Wisconsin
John F. Herath, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1999 · median 2002 among the 1,098 with a school on file
- Record last updated2015 · 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).
13 internal medicine physician records list a practice address in Onalaska
They are 13 of the 568 NPPES records with a practice address in Onalaska, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Onalaska → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Addison, D.O.Onalaska, WI 546501295268571
- Steven Bowman, DOOnalaska, WI 546501851374284
- Gerlyn Brasic, MDOnalaska, WI 546501033104427
- Teresa King, MDOnalaska, WI 546501619932639
- Amit Kulkarni, MDOnalaska, WI 546501710939996
- Kathryn Lynn, DOOnalaska, WI 546501922102037
- Tiffany Marinier, D.O.Onalaska, WI 546501144343161
- James Munn, MDOnalaska, WI 546501417959735
Common questions
What is John F. Herath, MD's NPI number?
John F. Herath, MD's National Provider Identifier (NPI) is 1740286913, issued on Jun 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John F. Herath, MD located?
The NPPES record lists a practice address at 3111 Gundersen Dr, Onalaska, WI, 54650. Phone: (608) 782-7300. Providers update this record themselves, so call before visiting.
How can I verify John F. Herath, MD's license?
NPPES lists Wisconsin license number 42729, 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 John F. Herath, MD prescribe under Medicare Part D?
In 2024, John F. Herath, MD had 9,589 Medicare Part D claims for 620 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.