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Obstetrics/Gynecology

Sunayana Srinivasan, MD

Works at hospitals in Chicago, IL · Illinois

Summary

Dr. Sunayana Srinivasan, MD is an OB-GYN at 1309 S Halsted St, Chicago, IL 60607. Phone: (312) 413-3000. Accepts Medicare assignment. In 2024, Sunayana Srinivasan had 19 Original Medicare patients and 35 services. NPI 1326388117. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Sunayana Srinivasan, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Sunayana Srinivasan accept Medicare assignment?
Yes. Medicare's clinician data says Sunayana Srinivasan 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 Sunayana Srinivasan see?
In 2024, CMS data shows 19 Original Medicare patients and 35 services for Sunayana Srinivasan. This counts Original Medicare only and measures volume, not quality.
What is Sunayana Srinivasan's NPI number?
1326388117. 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 Sunayana Srinivasan, 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 patients19
Services billed to Medicare35
Different services or procedures15
Participating Medicare providerYes
Average age of these patients59

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 pressure68%
  • High cholesterol63%

Hospitals where Sunayana Srinivasan works

Medicare's Facility Affiliation Data lists Sunayana Srinivasan 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.

Practice locations

Addresses where Sunayana Srinivasan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Sunayana Srinivasan as a member of this group (CMS data updated October 2, 2026).

  • The Board of Trustees of the University of Illinois1,150 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Illinois →

Other OB-GYNs in Chicago

Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.

All OB-GYNs in Chicago →

Other clinicians in The Board of Trustees of the University of Illinois

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2009 (17 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1326388117
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians