Kalpana Natrajan, MD

Medicare activity in 2024

Official CMS public-use data for Kalpana Natrajan, 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.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)1,904 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)1,002 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)74 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%
• Heart failure75%
• Chronic kidney disease69%
• Diabetes68%
• Ischemic heart disease65%

Hospitals where Kalpana Natrajan works

Medicare's Facility Affiliation Data lists Kalpana Natrajan 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.

• Grossmont HospitalLa Mesa, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050026
• Scripps Mercy HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050077
• UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050025

Practice locations

Addresses where Kalpana Natrajan is enrolled with Medicare (CMS data updated October 2, 2026).

• 555 Washington StSan Diego, CA 92103 (619) 884‑5499

Group practices

Medicare enrollment lists Kalpana Natrajan as a member of this group (CMS data updated October 2, 2026).

• Kalpana Natrajan MD Inc2 clinicians in the group

Specialties

• Infectious Diseaseprimary
• Internal Medicinealso

Find other Infectious Disease doctors in California →

Other infectious disease doctors in San Diego

Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.

• Aaron F. Carlin, MD
• Sindalisa Hean, MD
• Richard A. Mayer, MD
• Nancy Law, DO
• John C. Arnold, MD
• Ariella Goldblatt, MD
• Eliah S. Aronoff-Spencer, MD
• Michael L. Butera, MD

All infectious disease doctors in San Diego →

Clinician information

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