CHIDAMBARAM RAMASAMY MD
NPI 1275187684
Internal Medicine - Hematology & Oncology in Fort Smith, AR
About Chidambaram Ramasamy Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHIDAMBARAM RAMASAMY MD (NPI 1275187684) is an individual hematology & oncology provider in Fort Smith, Arkansas, licensed in Arkansas (E-19946) and active in the NPI registry since July 2019. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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
Chidambaram Ramasamy Md 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 Reassignment
Medicare enrollment records show Chidambaram Ramasamy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fort Smith, AR 72903
- Reassigned Medicare billing, Arkansas enrollment
- Also billed through NPI 1699070649 (Arkansas)
- 658 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 72903 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FORT SMITH, AR 72903
FORT SMITH, AR 72903
FORT SMITH, AR 72903
FORT SMITH, AR 72903
FORT SMITH, AR 72903
FORT SMITH, AR 72903
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 Chidambaram Ramasamy's NPI number?
The NPI number for Chidambaram Ramasamy is 1275187684. It was assigned to this individual provider in the NPPES registry on July 25, 2019.
Where is Chidambaram Ramasamy located?
Chidambaram Ramasamy practices at 7001 Rogers Ave Ste 200, Fort Smith, AR 72903. The listed phone number is (479) 314-7490.
What is Chidambaram Ramasamy's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Chidambaram Ramasamy enrolled in Medicare?
Yes. Chidambaram Ramasamy 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 organization bills Medicare for Chidambaram Ramasamy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chidambaram Ramasamy reassigns Medicare benefits to Mercy Clinic Fort Smith Communities (Fort Smith, AR). The 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 Chidambaram Ramasamy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Chidambaram Ramasamy accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Chidambaram Ramasamy 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.
When was this NPI record last updated?
The NPPES record for Chidambaram Ramasamy was last updated on August 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Chidambaram Ramasamy, MD · NPI 1275187684
Hematology & Oncology physician in Fort Smith, Arkansas. Individual provider, active in the CMS NPPES registry since July 25, 2019.
## Identity
- **NPI:** 1275187684 (Entity type: Individual)
- **Enumerated:** July 25, 2019
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** E-19946 (Arkansas)
- **Sole proprietor:** No
## Practice location
- **Address:** 7001 ROGERS AVE STE 200, Fort Smith, AR 72903-4022
- **Phone:** (479) 314-7490 · **Fax:** (479) 314-7494
## 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:** Mercy Clinic Fort Smith Communities (NPI 1902073620, Fort Smith, AR), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** August 3, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1275187684) · Data from the CMS NPPES public registry.