DR. TENKASI SUBRAMANIAN M.D.
NPI 1962550335
Specialist in Oak Brook, IL

Q: What is Tenkasi Subramanian's NPI number?

The NPI number for Tenkasi Subramanian is 1962550335. It was assigned to this individual provider in the NPPES registry on January 8, 2007.

Q: What is Tenkasi Subramanian's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Active since January 08, 2007PECOS EnrolledAccepts Medicare Assignment

811 SAINT STEPHENS GRN, OAK BROOK, IL 60523(630) 325-6561(630) 325-6575 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Tenkasi Subramanian M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. TENKASI SUBRAMANIAN M.D. (NPI 1962550335) is an individual specialist in Oak Brook, Illinois and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Holy Cross Hospital, and is a graduate of Other (1969).

NPPES Registry Identity

NPI1962550335

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameDR. TENKASI SUBRAMANIANCredential: M.D.

Location Address811 SAINT STEPHENS GRNOak Brook, IL 60523-2567

Mailing Address811 Saint Stephens GrnOak Brook, IL 60523-2567 · (630) 325-6561 · Fax (630) 325-6575

Phone(630) 325-6561

Fax(630) 325-6575

Sole ProprietorYes

Medical School CMSOtherGraduated 1969

Enumeration DateJanuary 8, 2007

Last NPPES UpdateJuly 8, 2007

✔ NPI 1962550335 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

811 SAINT STEPHENS GRN, Oak Brook, IL 60523

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Other Identifiers 1

Medicare UPIN338950IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Tenkasi Subramanian M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7113003658

PECOS Enrollment IDI20080325000408

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Tenkasi Subramanian reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mount Sinai Community Foundation

8.8 mi

Internal Medicine

610 S MAPLE AVE, STE 2100
Oak Park, IL 60304

Reassigned Medicare billing, Illinois enrollment
646 clinicians in this Medicare group

NPI 1215046347 (708) 848-7373

North American Partners In Anesthesia (illinois), LLC

10 mi

Anesthesiology

3 ERIE CT
Oak Park, IL 60302

Reassigned Medicare billing, Illinois enrollment
826 clinicians in this Medicare group

NPI 1699032524 (315) 413-5229

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

39 services35 patients

Anesthesia for other procedure on large bowel using an endoscope 00811

Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.

38 services38 patients

Anesthesia for procedure on small and large bowel using an endoscope 00813

Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.

26 services26 patients

Anesthesia for exam of colon using an endoscope 00812

Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.

12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Holy Cross Hospital

Acute Care Hospitals · Chicago, IL

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140133

Location2701 W 68th StreetChicago, IL 60629 · Cook County

Emergency services

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tenkasi Subramanian's NPI number?

The NPI number for Tenkasi Subramanian is 1962550335. It was assigned to this individual provider in the NPPES registry on January 8, 2007.

Where is Tenkasi Subramanian located?

Tenkasi Subramanian practices at 811 Saint Stephens Grn, Oak Brook, IL 60523. The listed phone number is (630) 325-6561.

What is Tenkasi Subramanian's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Tenkasi Subramanian enrolled in Medicare?

Yes. Tenkasi Subramanian is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Tenkasi Subramanian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tenkasi Subramanian reassigns Medicare benefits to 2 organizations: Mount Sinai Community Foundation (Oak Park, IL) and North American Partners In Anesthesia (illinois), LLC (Oak Park, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tenkasi Subramanian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Tenkasi Subramanian affiliated with any hospitals?

According to CMS data, Tenkasi Subramanian is affiliated with Holy Cross Hospital.

When was this NPI record last updated?

The NPPES record for Tenkasi Subramanian was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.