Quick answers
- Does Shankarlingam Sainath accept Medicare assignment?
- Yes. Medicare's clinician data says Shankarlingam Sainath 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 Shankarlingam Sainath see?
- In 2024, CMS data shows 960 Original Medicare patients and 2,267 services for Shankarlingam Sainath. This counts Original Medicare only and measures volume, not quality.
- What is Shankarlingam Sainath's NPI number?
- 1811050081. 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 Shankarlingam Sainath, 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 | 960 |
|---|---|
| Services billed to Medicare | 2,267 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)928 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)283 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)252 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)182 services
- Ultrasound study of arm or leg veins with compression and maneuvers (93970)157 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%
- Diabetes64%
- Ischemic heart disease57%
- Chronic kidney disease57%
- Arthritis56%
Hospitals where Shankarlingam Sainath works
Medicare's Facility Affiliation Data lists Shankarlingam Sainath 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.
- UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348
Practice locations
Addresses where Shankarlingam Sainath is enrolled with Medicare (CMS data updated October 2, 2026).
- 11100 Warner Ave, Suite 268Fountain Valley, CA 92708 (714) 540‑9911
Group practices
Medicare enrollment lists Shankarlingam Sainath as a member of this group (CMS data updated October 2, 2026).
- Fountain Valley Cardiology Medical Clinic Inc2 clinicians in the group
Specialties
Other internal medicine doctors in Fountain Valley
Clinicians with the same Medicare primary specialty in Fountain Valley, CA — not a recommendation.
Other clinicians in Fountain Valley Cardiology Medical Clinic Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1970 (56 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811050081 |
| 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