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Hematology/Oncology

Hari Krishnan Krishnan Nair, MD

Works at hospitals in Battle Creek, MI · Kalamazoo, MI · Marshall, MI · Michigan

Summary

Dr. Hari Krishnan Krishnan Nair, MD is a hematologist-oncologist at 300 N Ave, Battle Creek, MI 49017. Phone: (269) 245-8056. Accepts Medicare assignment. In 2024, Hari Krishnan Krishnan Nair had 213 Original Medicare patients and 617 services. NPI 1154773836. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Hari Krishnan Krishnan Nair, 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 Hari Krishnan Krishnan Nair accept Medicare assignment?
Yes. Medicare's clinician data says Hari Krishnan Krishnan Nair 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 Hari Krishnan Krishnan Nair see?
In 2024, CMS data shows 213 Original Medicare patients and 617 services for Hari Krishnan Krishnan Nair. This counts Original Medicare only and measures volume, not quality.
What is Hari Krishnan Krishnan Nair's NPI number?
1154773836. 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 Hari Krishnan Krishnan Nair, 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 patients213
Services billed to Medicare617
Different services or procedures11
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)251 services
  2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)205 services
  3. 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's (G2211)85 services
  4. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)31 services
  5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)17 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 pressure74%
  • High cholesterol69%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)51%
  • Arthritis50%
  • Chronic kidney disease35%
  • Diabetes31%

Hospitals where Hari Krishnan Krishnan Nair works

Medicare's Facility Affiliation Data lists Hari Krishnan Krishnan Nair 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.

Practice locations

Addresses where Hari Krishnan Krishnan Nair is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Hari Krishnan Krishnan Nair as a member of this group (CMS data updated October 2, 2026).

  • Bronson Battle Creek Hospital193 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Michigan →

Other hematologist-oncologists in Michigan

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

All hematologist-oncologists in Michigan →

Other clinicians in Bronson Battle Creek Hospital

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

Clinician information

CredentialMD
Graduation year2014 (12 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1154773836
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