Radhika S. Hariharan, MD

Medicare activity in 2024

Official CMS public-use data for Radhika S. Hariharan, 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 low level od decision making, if using time, 20 minutes or more (99213)390 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)264 services
3. Ultrasound scan of head and neck soft tissue (76536)192 services
4. Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)93 services
5. Blood glucose (sugar) test performed by hand-held instrument (82962)45 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%
• Arthritis50%
• Diabetes46%
• Osteoporosis46%
• Chronic kidney disease27%

Hospitals where Radhika S. Hariharan works

Medicare's Facility Affiliation Data lists Radhika S. Hariharan 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.

• Kaiser Foundation Hospital - San MarcosSan Marcos, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050855

Practice locations

Addresses where Radhika S. Hariharan is enrolled with Medicare (CMS data updated October 2, 2026).

• 4647 Zion AveSan Diego, CA 92120 (619) 528‑5000

Group practices

Medicare enrollment lists Radhika S. Hariharan as a member of this group (CMS data updated October 2, 2026).

• Southern California Permanente Medical Group11,293 clinicians in the group

Specialties

• Internal Medicineprimary
• Endocrinologyalso

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Diego

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

• Jennifer L. Park, DO
• Parthiv V. Sheth, MD
• George Hulley
• Rudolf E. Herzog, MD
• Matthew P. Macfarlane, MD
• Elaine S. Gertser, MD
• Brenda B. Watts, MD
• Justin Charles, MD

All internal medicine doctors in San Diego →

Other clinicians in Southern California Permanente Medical Group

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

• Maryam Modirrousta, CNM
• Akshay Manek, MD
• Allen G. Yee, MD
• Tweelynn Nguyen, MD
• Thomas T. Tellez, MD
• Derek Su, 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