SUMATHI SIVA SMITH M.D.
NPI 1932189016
Internal Medicine - Hematology & Oncology in Slidell, LA
About Sumathi Siva Smith M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SUMATHI SIVA SMITH M.D. (NPI 1932189016) is an individual hematology & oncology provider in Slidell, Louisiana, licensed in Louisiana (MD11896R) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Ochsner Medical Center Acute, and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
Accepted Insurance
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
Sumathi Siva Smith 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.
Medicare Billing Reassignments
2Medicare enrollment records show Sumathi Smith reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Slidell, LA 70458
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 clinicians in this Medicare group
Picayune, MS 39466
- Reassigned Medicare billing, Mississippi enrollment
- 326 clinicians in this Medicare group
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 5
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ochsner Medical Center Acute
Acute Care Hospitals · New Orleans, LASlidell Memorial Hospital
Acute Care Hospitals · Slidell, LASt Tammany Parish Hospital
Acute Care Hospitals · Covington, LAHighland Community Hospital
Acute Care Hospitals · Picayune, MSOchsner Medical Center-Hancock
Acute Care Hospitals · Bay Saint Louis, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70458 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SLIDELL, LA 70458
SLIDELL, LA 70458
SLIDELL, LA 70458
SLIDELL, LA 70458
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 Sumathi Smith's NPI number?
The NPI number for Sumathi Smith is 1932189016. It was assigned to this individual provider in the NPPES registry on January 17, 2006. The provider is also known as Sumathi Sivasubramaniam MD.
Where is Sumathi Smith located?
Sumathi Smith practices at 1120 Robert Blvd, Slidell, LA 70458. The listed phone number is (985) 639-3777.
What is Sumathi Smith's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Sumathi Smith enrolled in Medicare?
Yes. Sumathi Smith 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 Sumathi Smith's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sumathi Smith reassigns Medicare benefits to 2 organizations: Ochsner Clinic LLC (Slidell, LA) and Ochsner Mississippi, LLC (Picayune, MS). 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 Sumathi Smith's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sumathi Smith accept?
Health plans from Blue Cross and Blue Shield of Louisiana, Cigna Healthcare and HMO Louisiana list Sumathi Smith as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Sumathi Smith affiliated with any hospitals?
According to CMS data, Sumathi Smith is affiliated with Ochsner Medical Center Acute, Slidell Memorial Hospital, St Tammany Parish Hospital, Highland Community Hospital and Ochsner Medical Center-Hancock.
When was this NPI record last updated?
The NPPES record for Sumathi Smith was last updated on March 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Sumathi Siva Smith, M.D. · NPI 1932189016
Hematology & Oncology physician in Slidell, Louisiana. Individual provider, active in the CMS NPPES registry since January 17, 2006.
## Identity
- **NPI:** 1932189016 (Entity type: Individual)
- **Enumerated:** January 17, 2006
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** MD11896R (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1120 ROBERT BLVD, Slidell, LA 70458-2068
- **Phone:** (985) 639-3777 · **Fax:** (985) 639-3708
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Ochsner Clinic LLC (NPI 1861006777, Slidell, LA); Ochsner Mississippi, LLC (NPI 1487253407, Picayune, MS) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** March 21, 2022
- **Other identifiers:** Medicaid 04554341 (MS); Medicaid 1690384 (LA)
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Source: [NPI Profile](https://npiprofile.com/npi/1932189016) · Data from the CMS NPPES public registry.