Siddhi Mankame, MD

Medicare activity in 2024

Official CMS public-use data for Siddhi Mankame, 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)103 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)72 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)31 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)19 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)18 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%
• Arthritis57%
• Ischemic heart disease54%
• Diabetes53%
• Chronic kidney disease53%

Hospitals where Siddhi Mankame works

Medicare's Facility Affiliation Data lists Siddhi Mankame 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 Fontana/OntarioFontana, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050140

Practice locations

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

• 2295 S Vineyard AveOntario, CA 91761 (909) 724‑5000
• 9961 Sierra AveFontana, CA 92335 (909) 427‑5000

Group practices

Medicare enrollment lists Siddhi Mankame 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

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Ontario

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

• Doh Joon Park, DO
• Saida Z. Bhatia, MD
• Jonahlie Quintos-Monsale, MD
• Dung A. Nguyen, MD
• Glory Y. Tseng, DO
• Austin Smith, MD
• Alexander K. Han, MD
• David C. Liu, MD

All internal medicine doctors in Ontario →

Other clinicians in Southern California Permanente Medical Group

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

• Kevin J. Kaylor, OT
• Dane W. Barton, MD
• Lisa M. Ercolini-Bhatia, MD
• Roslyn Mazi, NP
• Juan Oliva, MD
• Thomas J. Chen, 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