NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1235186099 M.D.
Verify on CMS → Riaz Sirajuddin, M.D.
Cardiovascular Disease Physician in Oklahoma City, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 24,795 in Cardiovascular Disease Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
5K
Medicare Part D claims · 452 beneficiaries · Cardiovascular Disease Physician avg: 3K
MIPS score
70.2/100
▼ 13 pts below national avg 83.1 · Mid-tier
Industry payments
$37.9K
120 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Riaz Sirajuddin, M.D. reported a CMS MIPS final score of 70.2/100 - below the 83.1 national average - and filed 4,719 Medicare Part D claims in 2023.
- 70.2/100
- MIPS score · -13 vs avg
- 5K
- Part D claims, 2023
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Riaz Sirajuddin, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
70 8th percentile higher than 8% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Riaz Sirajuddin, M.D. sits
This provider among cardiovascular disease physician peers
Across the 8,753 cardiovascular disease physician providers who report both Medicare Part D prescribing and a MIPS quality score, Riaz Sirajuddin, M.D. writes more Part D claims than 72% of them and scores higher on MIPS quality than 8% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one cardiovascular disease physician peer from a representative sample of 60; the gold marker is Riaz Sirajuddin, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Riaz Sirajuddin, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Riaz Sirajuddin, M.D.?
Below national averagePrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
4,719 56% vs specialty avg
MIPS final score
70.2/100 12.9 pts vs avg
Specialty distribution in Oklahoma
How Cardiovascular Disease Physician compares to other specialties among Oklahoma providers
Medicare quality performance, MIPS
Riaz Sirajuddin, M.D.'s 2023 MIPS final score plotted against the Cardiovascular Disease Physician national average
- MIPS Final Score
- 70.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Cardiovascular Disease Physician) - 70.2/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Riaz Sirajuddin, M.D. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D. credentials at 10413 GREENBRIAR PKWY, Oklahoma City, OK, 73159, with a listed phone of (405) 691-4665. NPI 1235186099 was issued on 05/27/2006.
Medicare Part D records for calendar year 2023 show 4,719 prescription claims written by this provider, covering 452 Medicare beneficiaries and totaling roughly $1.4 million in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 70.2/100 for the 2023 performance year (Quality 99.7, Cost 75.7), compared with the national average of 83.1.
Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1235186099 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/27/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
70.192
Final Score
Avg: 83.1
99.7407
Quality
75.7133
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Riaz Sirajuddin, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
According to CMS billing records, Riaz Sirajuddin, M.D. is affiliated with 3 Medicare-billing facilities across 3 states.
Adena Medical Group LLC
Chillicothe, OH
Riaz A. Sirajuddin MD PC
Oklahoma City, OK
Rutland Hospital, Inc.
Rutland, VT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Riaz Sirajuddin, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$37.9K
Largest payer
Novo Nordisk Inc
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
4,719
Total Claims
$1.4M
Total Drug Cost
452
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 8,337
- Total Day Supply
- 248,494
- Generic Drug Cost
- $102K
- Antibiotic Claims
- 14
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 1.80
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 86, 65-74: 218, 75-84: 124, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Riaz Sirajuddin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Nebivolol Hcl
Nebivolol Hcl
432 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
400 claims
- Amlodipine Besylate
Amlodipine Besylate
316 claims
- Eliquis
Eliquis
225 claims
- Clopidogrel
Clopidogrel
195 claims
- Atorvastatin Calcium
Atorvastatin Calcium
180 claims
- Xarelto 167
Xarelto
167 claims
- Ozempic 158
Ozempic
158 claims
| Drug | Claims |
|---|---|
| Nebivolol Hcl | 432 |
| Rosuvastatin Calcium | 400 |
| Amlodipine Besylate | 316 |
| Eliquis Apixaban | 225 |
| Clopidogrel Clopidogrel Bisulfate | 195 |
| Atorvastatin Calcium | 180 |
| Xarelto Rivaroxaban | 167 |
| Ozempic Semaglutide | 158 |
| Trulicity Dulaglutide | 139 |
| Amlodipine-Valsartan Amlodipine Besylate/Valsartan | 103 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Cardiovascular Disease Physician Overview
How Riaz Sirajuddin, M.D. fits within the Cardiovascular Disease Physician landscape nationally.
24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
Riaz Sirajuddin, M.D.'s 4,719 claims are above the specialty average of 3,033.
Nearby Cardiovascular Disease Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Sirajuddin.
Dr. Mazen Abu-Fadel
M.D.
Oklahoma City, OK
Dr. Philip Adamson
M.D.
Oklahoma City, OK
Dr. Khushboo Agarwal
M.B.B.S
Oklahoma City, OK
Dr. Neil Agrawal
M.D.
Tulsa, OK
Dr. Iftikhar Ahmad
MD
Oklahoma City, OK
Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Oklahoma medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Cardiovascular Disease Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Riaz Sirajuddin, M.D.'s specialty? ▼
Riaz Sirajuddin, M.D. specializes in Cardiovascular Disease Physician and practices in Oklahoma City, Oklahoma. Credentials: M.D..
How much does Riaz Sirajuddin, M.D. prescribe under Medicare Part D? ▼
In 2023, Riaz Sirajuddin, M.D. wrote 4,719 Medicare Part D claims totaling $1.4M in drug costs for 452 beneficiaries.
What is Riaz Sirajuddin, M.D.'s Medicare quality score? ▼
Riaz Sirajuddin, M.D. has a CMS MIPS Final Score of 70.2/100 (Quality: 99.7, Cost: 75.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Riaz Sirajuddin, M.D. located? ▼
Riaz Sirajuddin, M.D. is located at 10413 GREENBRIAR PKWY, Oklahoma City, OK, 73159. Phone: (405) 691-4665.
What is Riaz Sirajuddin, M.D.'s NPI number? ▼
Riaz Sirajuddin, M.D.'s National Provider Identifier (NPI) is 1235186099, issued on 05/27/2006.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does Riaz Sirajuddin, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Riaz Sirajuddin, M.D.'s most frequently prescribed drugs include Nebivolol Hcl, Rosuvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Riaz Sirajuddin, M.D. accept Medicare? ▼
Riaz Sirajuddin, M.D. appears in CMS Medicare data with 4,719 Part D claims and 452 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Riaz Sirajuddin, M.D.'s credentials? ▼
Riaz Sirajuddin, M.D.'s NPI is 1235186099 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.