RIAZ A. SIRAJUDDIN MD PC
NPI 1508976648
Internal Medicine - Cardiovascular Disease in Oklahoma City, OK

Q: What is Riaz A. Sirajuddin MD PC's NPI number?

The NPI number for Riaz A. Sirajuddin MD PC is 1508976648. It was assigned to this organization in the NPPES registry on August 30, 2006. The provider is doing business as Heart Solutions of Oklahoma.

Q: What is Riaz A. Sirajuddin MD PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Active since August 30, 2006

10413 GREENBRIAR PKWY, OKLAHOMA CITY, OK 73159(405) 691-4665(405) 378-7628 Get Directions Write a Review

NPPES record last updated: May 27, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 27, 2026, Mar 23, 2026 (2 updates tracked since 2026).

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About Riaz A. Sirajuddin Md Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RIAZ A. SIRAJUDDIN MD PC (NPI 1508976648), doing business as Heart Solutions Of Oklahoma, is a healthcare organization registered as a cardiovascular disease in Oklahoma City, Oklahoma and active in the NPI registry since August 2006. The organization lists Riaz Ahmed Sirajuddin, Owner, as its authorized official.

NPPES Registry Identity

NPI1508976648

Entity TypeOrganization

Primary Taxonomy207RC0000X

Legal Business NameRIAZ A. SIRAJUDDIN MD PC

Location Address10413 GREENBRIAR PKWYOklahoma City, OK 73159-7656

Mailing Address10413 Greenbriar PkwyOklahoma City, OK 73159-7656 · (405) 691-4665 · Fax (405) 378-7628

Phone(405) 691-4665

Fax(405) 378-7628

Organization SubpartNo

Authorized OfficialRiaz Ahmed SirajuddinOwner · (405) 691-4665

Enumeration DateAugust 30, 2006

Last NPPES UpdateMay 27, 20262 updates tracked since enumeration

NPPES CertifiedMay 27, 2026

✔ NPI 1508976648 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

10413 GREENBRIAR PKWY, Oklahoma City, OK 73159

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Other Names 1

Doing Business AsHeart Solutions Of Oklahoma

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Riaz A. Sirajuddin Md Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Riaz A. Sirajuddin MD PC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Charlsie Record

Nurse Practitioner

NPI 1972028249

10413 GREENBRIAR PKWY
Oklahoma City, OK 73159

(405) 691-4665

✔ PECOS✔ Accepts MedicareSame address

Riaz Sirajuddin, M.D.

Cardiovascular Disease (Cardiology)

NPI 1235186099

10413 GREENBRIAR PKWY
Oklahoma City, OK 73159

(405) 691-4665

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Riaz A. Sirajuddin MD PC's NPI number?

The NPI number for Riaz A. Sirajuddin MD PC is 1508976648. It was assigned to this organization in the NPPES registry on August 30, 2006. The provider is doing business as Heart Solutions of Oklahoma.

Where is Riaz A. Sirajuddin MD PC located?

Riaz A. Sirajuddin MD PC is located at 10413 Greenbriar Pkwy, Oklahoma City, OK 73159. The listed phone number is (405) 691-4665.

What is Riaz A. Sirajuddin MD PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Riaz A. Sirajuddin MD PC enrolled in Medicare?

Yes. Riaz A. Sirajuddin MD PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Riaz A. Sirajuddin MD PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Riaz A. Sirajuddin MD PC, in Cardiovascular Disease (Cardiology) and Nurse Practitioner. A 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 the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Riaz A. Sirajuddin MD PC was last updated on May 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.