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Internal Medicine

Sathish K. Cullath Harikrishnan, MD

Works at hospitals in Wolfeboro, NH · Anacortes, WA · Rochelle, IL … · New Hampshire, Washington, Illinois, Minnesota

Summary

Dr. Sathish K. Cullath Harikrishnan, MD is an internal medicine doctor at 1130 Collins Rd, Jefferson, WI 53549. Phone: (312) 404-9818. Accepts Medicare assignment. In 2024, Sathish K. Cullath Harikrishnan had 316 Original Medicare patients and 829 services. NPI 1861421869. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1130 Collins Rd, Jefferson, WI 53549 · Directions (6 more locations)
  • Phone: (312) 404‑9818
  • Medicare: Accepts Medicare assignment
  • Hospitals: Huggins Hospital, Island Hospital, Rochelle Community Hospital and 1 more
  • Group practice: Range Regional Health Services (+5 more)
  • Medical school: graduated 2000 (26 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Sathish K. Cullath Harikrishnan, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Sathish K. Cullath Harikrishnan accept Medicare assignment?
Yes. Medicare's clinician data says Sathish K. Cullath Harikrishnan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Sathish K. Cullath Harikrishnan see?
In 2024, CMS data shows 316 Original Medicare patients and 829 services for Sathish K. Cullath Harikrishnan. This counts Original Medicare only and measures volume, not quality.
What is Sathish K. Cullath Harikrishnan's NPI number?
1861421869. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Sathish K. Cullath Harikrishnan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients316
Services billed to Medicare829
Different services or procedures13
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)501 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)138 services
  3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)67 services
  4. Hospital discharge day management, more than 30 minutes (99239)59 services
  5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)16 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis59%
  • Heart failure49%
  • Ischemic heart disease47%
  • Anxiety46%

Hospitals where Sathish K. Cullath Harikrishnan works

Medicare's Facility Affiliation Data lists Sathish K. Cullath Harikrishnan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Huggins HospitalWolfeboro, NH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 301312
  • Island HospitalAnacortes, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500007
  • Rochelle Community HospitalRochelle, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141312
  • Sanford Worthington Medical CenterWorthington, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240022

Practice locations

Addresses where Sathish K. Cullath Harikrishnan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Sathish K. Cullath Harikrishnan as a member of these groups (CMS data updated October 2, 2026).

  • Range Regional Health Services353 clinicians in the group
  • Grand Itasca Clinic and Hospital323 clinicians in the group
  • Public Hospital District No 4 King County Washington92 clinicians in the group
  • Northwest Hospital Medicine Physicians LLC69 clinicians in the group
  • Rochelle Community Hospital Association26 clinicians in the group
  • Premier Health Consultants Inc5 clinicians in the group

Specialties

Find other Internal Medicine doctors in Wisconsin →

Other internal medicine doctors in Wisconsin

Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.

All internal medicine doctors in Wisconsin →

Other clinicians in Range Regional Health Services

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2000 (26 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1861421869
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians