CHITTUR A SIVARAM MD
NPI 1265401905
Internal Medicine - Cardiovascular Disease in Oklahoma City, OK
About Chittur A Sivaram Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHITTUR A SIVARAM MD (NPI 1265401905) is an individual cardiovascular disease provider in Oklahoma City, Oklahoma, licensed in Oklahoma (18345) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Oklahoma City, Inc, and is a graduate of Other (1970).
NPPES Registry Identity
Specialties & Licenses
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
Chittur A Sivaram 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 Reassignments
2Medicare enrollment records show Chittur Sivaram reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oklahoma City, OK 73104
- Reassigned Medicare billing, Oklahoma enrollment
- 845 clinicians in this Medicare group
Oklahoma City, OK 73104
- Reassigned Medicare billing, Oklahoma enrollment
- 1,795 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 9
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Oklahoma City, Inc
Acute Care Hospitals · Oklahoma City, OKO U Medical Center
Acute Care Hospitals · Oklahoma City, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OKLAHOMA CITY, OK 73104
OKLAHOMA CITY, OK 73104
OKLAHOMA CITY, OK 73104
OKLAHOMA CITY, OK 73104
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 Chittur Sivaram's NPI number?
The NPI number for Chittur Sivaram is 1265401905. It was assigned to this individual provider in the NPPES registry on March 15, 2006.
Where is Chittur Sivaram located?
Chittur Sivaram practices at 825 NE 10th St Oupb 2500, Oklahoma City, OK 73104. The listed phone number is (405) 271-7001.
What is Chittur Sivaram's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Chittur Sivaram enrolled in Medicare?
Yes. Chittur Sivaram 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 Chittur Sivaram's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chittur Sivaram reassigns Medicare benefits to 2 organizations: Board Of Regents Of The University Of Oklahoma - Ou Physicians (Oklahoma City, OK) and Ou Health Partners, Inc (Oklahoma City, OK). 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 Chittur Sivaram's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Chittur Sivaram accept?
Health plans from Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Mending Health list Chittur Sivaram 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 Chittur Sivaram affiliated with any hospitals?
According to CMS data, Chittur Sivaram is affiliated with Mercy Hospital Oklahoma City, Inc and O U Medical Center.
When was this NPI record last updated?
The NPPES record for Chittur Sivaram was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Chittur A Sivaram, MD · NPI 1265401905
Cardiovascular Disease physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since March 15, 2006.
## Identity
- **NPI:** 1265401905 (Entity type: Individual)
- **Enumerated:** March 15, 2006
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 18345 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 825 NE 10TH ST, OUPB 2500, Oklahoma City, OK 73104-5417
- **Phone:** (405) 271-7001
## 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): Board Of Regents Of The University Of Oklahoma - Ou Physicians (NPI 1801869250, Oklahoma City, OK); Ou Health Partners, Inc (NPI 1528642642, Oklahoma City, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1970
## Record status
- **NPPES last updated:** July 8, 2007
---
Source: [NPI Profile](https://npiprofile.com/npi/1265401905) · Data from the CMS NPPES public registry.