Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Shankarlingam Sainath, MD, FACC

Individual provider Internal Medicine Physician · NPI 1811050081

Dr. Shankarlingam Sainath, MD, FACC practises Internal Medicine in Fountain Valley, California. Qualified in 1970, 56 years ago. Practices with Fountain Valley Cardiology Medical Clinic Inc, a 2-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
56
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
FACC — Fellow of the American College of Cardiology
A cardiologist admitted as a fellow of the ACC.

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Practice location Address checks out

11100 Warner Ave #268
Fountain Valley, CA 92708-7512 Not confirmed with CMS for 14 years — call before visiting
Phone: (714) 540-9911
Fax: (714) 549-9720
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence A25691 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A25691 (CA)

Record details

NPI number1811050081
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , FACC
Sole proprietorNo
NPI enumeratedDecember 19, 2006
Last updated in NPPESMarch 20, 2012

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY), PERIPHERAL VASCULAR DISEASE
Medical schoolOTHER
Graduated 1970 (56 years in practice)
Group practice Fountain Valley Cardiology Medical Clinic Inc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients960
Services billed 2,267 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $176 1 payment · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $6 1 payment · travel or lodging paid or reimbursed, such as to attend a conference

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Uci Health-Orange Hospital · Orange, CA

Colleagues at Fountain Valley Cardiology Medical Clinic Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Fountain Valley