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Infectious Disease

Jagraj S. Nijjar, MD

Works at hospitals in Marysville, CA · Tulare, CA · Colusa, CA … · California

Summary

Dr. Jagraj S. Nijjar, MD is an infectious disease doctor at 1000 Sutter St, Yuba City, CA 95991. Phone: (530) 673-9420. Accepts Medicare assignment. In 2024, Jagraj S. Nijjar had 842 Original Medicare patients and 44,965 services. NPI 1689610990. 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 Jagraj S. Nijjar, 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 Jagraj S. Nijjar accept Medicare assignment?
Yes. Medicare's clinician data says Jagraj S. Nijjar 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 Jagraj S. Nijjar see?
In 2024, CMS data shows 842 Original Medicare patients and 44,965 services for Jagraj S. Nijjar. This counts Original Medicare only and measures volume, not quality.
What is Jagraj S. Nijjar's NPI number?
1689610990. 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 Jagraj S. Nijjar, 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 patients842
Services billed to Medicare44,965
Different services or procedures31
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)1,412 services
  2. Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)929 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)913 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)487 services
  5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)307 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%
  • Diabetes58%
  • Chronic kidney disease52%
  • Heart failure48%
  • Arthritis47%

Hospitals where Jagraj S. Nijjar works

Medicare's Facility Affiliation Data lists Jagraj S. Nijjar 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.

  • Adventist Health and RideoutMarysville, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050133
  • Adventist Health TulareTulare, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050784
  • Colusa Medical CenterColusa, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050783
  • Orchard HospitalGridley, CA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 051311
  • Oroville HospitalOroville, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050030

Practice locations

Addresses where Jagraj S. Nijjar is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 15; the Medicare profile lists all.

Group practices

Medicare enrollment lists Jagraj S. Nijjar as a member of these groups (CMS data updated October 2, 2026).

  • Galen Inpatient Physicians PC1,077 clinicians in the group
  • Sonora Community Hospital133 clinicians in the group
  • Ampla Health101 clinicians in the group
  • American Specialty Physicians Group Inc100 clinicians in the group
  • Rideout Memorial Hospital87 clinicians in the group
  • Reedley Community Hospital62 clinicians in the group

Specialties

Find other Infectious Disease doctors in California →

Other infectious disease doctors in California

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

All infectious disease doctors in California →

Other clinicians in Galen Inpatient Physicians PC

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

Clinician information

CredentialMD
Graduation year1993 (33 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1689610990
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