John Herath, MD
NPI 1740286913 · Internal Medicine Physician · Onalaska, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Herath, MD is a Internal Medicine Physician provider in Onalaska, WI (NPI 1740286913).
Provider details
- NPI number
- 1740286913
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 42729 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
616 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 205 | $15 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 166 | $90 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 118 | $121 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 97 | $61 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 17 | $122 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 139 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 601 | 148 |
| Lisinopril | 493 | 136 |
| Omeprazole | 463 | 111 |
| Metoprolol Succinate | 360 | 94 |
| Simvastatin | 307 | 81 |
| Amlodipine Besylate | 296 | 71 |
| Levothyroxine Sodium | 285 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-22
- Last updated
- 2015-06-02
Frequently asked questions
- What is John Herath's NPI number?
- John Herath's National Provider Identifier (NPI) is 1740286913, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Herath's specialty?
- John Herath is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Herath located?
- John Herath's practice location on file with NPPES is 3111 Gundersen Dr, Onalaska, WI 54650-8447.
- What is John Herath's phone number?
- The practice phone number listed in the NPPES registry for John Herath is (608) 782-7300.
- Does John Herath accept Medicare?
- John Herath is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Herath's NPI active?
- Yes — John Herath's NPI (1740286913) is active in the NPPES registry as of the last update on 2015-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.