Quick answers
- Does Chandrika N. Shankar accept Medicare assignment?
- Medicare's clinician data says Chandrika N. Shankar may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Chandrika N. Shankar see?
- In 2024, CMS data shows 31 Original Medicare patients and 181 services for Chandrika N. Shankar. This counts Original Medicare only and measures volume, not quality.
- What is Chandrika N. Shankar's NPI number?
- 1669598421. 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 Chandrika N. Shankar, 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 | 31 |
|---|---|
| Services billed to Medicare | 181 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 64 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)111 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)32 services
- Hospital discharge day management, more than 30 minutes (99239)15 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).
- Depression75%
- Anxiety75%
- High cholesterol65%
- High blood pressure58%
- Arthritis52%
Practice locations
Addresses where Chandrika N. Shankar is enrolled with Medicare (CMS data updated October 2, 2026).
- 675 N Saint Clair StChicago, IL 60611
Specialties
- Psychiatryprimary
Other psychiatrists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1669598421 |
| 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
- 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