Kalpana I. Nathan, MD

Medicare activity in 2024

Official CMS public-use data for Kalpana I. Nathan, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)157 services
2. Psychotherapy with evaluation and management visit, 30 minutes (90833)37 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).

• Depression75%
• Anxiety75%
• High cholesterol69%
• High blood pressure59%
• Arthritis48%
• Osteoporosis25%

Hospitals where Kalpana I. Nathan works

Medicare's Facility Affiliation Data lists Kalpana I. Nathan 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.

• UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050454

Practice locations

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

• 2330 Post StSan Francisco, CA 94115 (415) 476‑4029

Group practices

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

• University of California San Francisco1,839 clinicians in the group

Specialties

• Psychiatryprimary

Find other Psychiatry doctors in California →

Other psychiatrists in San Francisco

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

• Christopher Migdal, MD
• Katherine Young, MD
• Clayton Bullock, MD
• David E. Roth, MD
• Connor McCarthy, MD
• Nicholas P. Reeves, MD
• Katherine S. Pier, MD
• Veronica B. Searles Quick, MD

All psychiatrists in San Francisco →

Other clinicians in University of California San Francisco

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

• Pei Chen, MD
• Jonathan M. Friedman, MD
• Veronica A. Yank, MD
• Megan R. Mahoney, MD
• Ilan Y. Benador-Shen, MD
• Caroline M. Schlocker, MD

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