Quick answers
- Does Shankar Sundaram accept Medicare assignment?
- Yes. Medicare's clinician data says Shankar Sundaram 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 Shankar Sundaram see?
- In 2024, CMS data shows 160 Original Medicare patients and 871 services for Shankar Sundaram. This counts Original Medicare only and measures volume, not quality.
- What is Shankar Sundaram's NPI number?
- 1306959358. 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 Shankar Sundaram, 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 patients | 160 |
|---|---|
| Services billed to Medicare | 871 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)213 services
- Telephone medical discussion with physician, 21-30 minutes (99443)29 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)26 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)25 services
- Collection of blood sample from implanted device (36591)22 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 pressure71%
- High cholesterol68%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)58%
- Arthritis36%
- Diabetes31%
- Ischemic heart disease29%
Hospitals where Shankar Sundaram works
Medicare's Facility Affiliation Data lists Shankar Sundaram 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
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050222
- Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050100
Practice locations
Addresses where Shankar Sundaram is enrolled with Medicare (CMS data updated October 2, 2026).
- 10670 Wexford StSan Diego, CA 92131 (858) 621‑4002
- 1400 E Palomar StChula Vista, CA 91913 (858) 499‑2600
Group practices
Medicare enrollment lists Shankar Sundaram as a member of this group (CMS data updated October 2, 2026).
- Sharp Rees-Stealy Medical Group Inc884 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in Sharp Rees-Stealy Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | Oakland College Of Medicine And Surgery |
|---|---|
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1306959358 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians