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

Individual provider Anesthesiology Physician · NPI 1851399422

Shanmugasundaram Theventhiran, MD practises Anesthesiology in Staten Island, New York. Qualified in 1978, 48 years ago. Practices with North Shore - Lij Anesthesiology, PC, a 1,004-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
48
Licensed in
NY
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

475 Seaview Ave
Staten Island, NY 10305-3436 Not confirmed with CMS for 10 years — call before visiting
Phone: (718) 226-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 195811-1 (NY)

Record details

NPI number1851399422
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 8, 2005
Last updated in NPPESSeptember 29, 2016

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Also practisesPEDIATRIC MEDICINE
Medical schoolOTHER
Graduated 1978 (48 years in practice)
Group practice North Shore - Lij Anesthesiology, Pc — 1004 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 patients264
Services billed 275 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at North Shore - Lij Anesthesiology, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1004 clinicians in the practice; 12 are shown here.

Other providers in Staten Island