DR. SHYAMSUNDER R CHAKILUM (M.D.) – Child & Adolescent Psychiatry Physician, NPI 1295706521
Child & Adolescent Psychiatry Physician
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Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
529 PSYCHIATRY in IN
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Provider Addresses for DR. SHYAMSUNDER R CHAKILUM (M.D.)
8400, Louisiana Street, Merrillville, Lake County, Indiana, 46410, United States
C/O GEMINUS CORPORATION
MERRILLVILLE, IN 464106385
Phone: (219) 757-1928
Fax: (219) 757-1950
Type: Mailing
1409, East 84th Place, Merrillville, Lake County, Indiana, 46410, United States
REGIONAL MENTAL HEALTH CENTER
MERRILLVILLE, IN 464106451
Phone: (219) 794-2000
Fax: (219) 794-2010
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-12-23
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20041223000147 | I | Psychiatry | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 46410)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| P S Y C H I A T R Y | IL | |
| Psychiatry, General Practice | IL | |
| P S Y C H I A T R Y | TN | |
| P S Y C H I A T R Y | SC | |
| P S Y C H I A T R Y | IL | |
| P S Y C H I A T R Y | IN | |
| Psychiatry, Neuropsychiatry | IL | |
| - | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL |
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