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Cardiovascular Disease (Cardiology)

Chittur Sivaram, MD

Works at hospitals in Oklahoma City, OK · Oklahoma

Summary

Dr. Chittur Sivaram, MD is a cardiologist at 825 NE 10th St, Oklahoma City, OK 73104. Phone: (405) 271-4700. Accepts Medicare assignment. In 2024, Chittur Sivaram had 535 Original Medicare patients and 1,036 services. NPI 1265401905. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Chittur Sivaram, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Chittur Sivaram accept Medicare assignment?
Yes. Medicare's clinician data says Chittur Sivaram accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Chittur Sivaram see?
In 2024, CMS data shows 535 Original Medicare patients and 1,036 services for Chittur Sivaram. This counts Original Medicare only and measures volume, not quality.
What is Chittur Sivaram's NPI number?
1265401905. 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 Chittur Sivaram, 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 patients535
Services billed to Medicare1,036
Different services or procedures32
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)327 services
  2. Ultrasound of heart with color-depicted blood flow, rate and valve function (93325)172 services
  3. Ultrasound of heart, follow-up (93308)125 services
  4. Ultrasound of heart blood flow, valves and chambers, follow-up (93321)123 services
  5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)79 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).

  • High blood pressure75%
  • High cholesterol75%
  • Ischemic heart disease56%
  • Arthritis54%
  • Heart failure51%
  • Diabetes46%

Hospitals where Chittur Sivaram works

Medicare's Facility Affiliation Data lists Chittur Sivaram at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Chittur Sivaram is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Chittur Sivaram as a member of this group (CMS data updated October 2, 2026).

  • OU Health Partners Inc1,184 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Oklahoma →

Other cardiologists in Oklahoma City

Clinicians with the same Medicare primary specialty in Oklahoma City, OK — not a recommendation.

All cardiologists in Oklahoma City →

Other clinicians in OU Health Partners Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1970 (56 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1265401905
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians