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Internal Medicine

Girija K. Kumar, MD

Works at hospitals in Chicago, IL · Illinois

Summary

Dr. Girija K. Kumar, MD is an internal medicine doctor at 1401 S California Ave, Chicago, IL 60608. Phone: (773) 522-6656. Accepts Medicare assignment. In 2024, Girija K. Kumar had 43 Original Medicare patients and 202 services. NPI 1861486250. 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: 1401 S California Ave, Chicago, IL 60608 · Directions (2 more locations)
  • Phone: (773) 522‑6656
  • Medicare: Accepts Medicare assignment
  • Hospital: Mt Sinai Hospital Medical Center
  • Group practice: Mount Sinai Community Foundation
  • Medical school: graduated 1986 (40 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Girija K. Kumar, 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 Girija K. Kumar accept Medicare assignment?
Yes. Medicare's clinician data says Girija K. Kumar 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 Girija K. Kumar see?
In 2024, CMS data shows 43 Original Medicare patients and 202 services for Girija K. Kumar. This counts Original Medicare only and measures volume, not quality.
What is Girija K. Kumar's NPI number?
1861486250. 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 Girija K. Kumar, 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 patients43
Services billed to Medicare202
Different services or procedures18
Participating Medicare providerYes
Average age of these patients70

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)58 services
  2. 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)39 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)26 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)22 services
  5. Administration of influenza virus vaccine (G0008)12 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 cholesterol70%
  • Arthritis51%
  • Diabetes47%
  • Ischemic heart disease30%
  • Heart failure28%

Hospitals where Girija K. Kumar works

Medicare's Facility Affiliation Data lists Girija K. Kumar 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 Girija K. Kumar is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Girija K. Kumar as a member of this group (CMS data updated October 2, 2026).

  • Mount Sinai Community Foundation248 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Chicago

Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.

All internal medicine doctors in Chicago →

Other clinicians in Mount Sinai Community Foundation

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

Clinician information

CredentialMD
Graduation year1986 (40 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1861486250
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