Am J Cardiol
Arrhythmias, CardiacHeart ArrestHeart Failure
Dr. Kevin W. O'Day, MD
NPI1255793220PAC ID6507151495
- Medicare services, 2024
- 4,477
- Medicare patients, 2024
- 2,982
- Part D claims, 2024
- 1,915
- Publications
- 5
- MIPS score, 2024
- 100
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
Find Dr. O'Day's professional email, personal email and mobile number
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Dr. Kevin W. O'Day is a cardiologist in Mendon, Massachusetts
Dr. O'Day practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. O'Day's NPI, 1255793220, was assigned on March 28, 2016. Dr. O'Day graduated from University of Massachusetts Medical School in 2016. Dr. O'Day holds Massachusetts license 277626.
NPI and contact details
- NPI
- 1255793220NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507151495
- NPI enumeration date
- March 28, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kevin W. O'Day practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. O'Day's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kevin W. O'Day is affiliated with 6 sites of care and 1 medical group
Dr. O'Day's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dr. O'Day is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. O'Day to 4 more hospitals, each named with a free account.
Umass Memorial Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kevin W. O'Day's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Day practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Kevin W. O'Day is one of 840 cardiologists in Massachusetts
Cardiovascular disease is Dr. O'Day's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. O'Day is licensed in Massachusetts.
Specialties and state licenses
- Cardiovascular disease, MassachusettsPrimary
Cardiologists near Dr. O'Day
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Kevin W. O'Day billed Medicare for 4,477 services in 2024
CMS data shows 4,477 Medicare services from Dr. O'Day across 21 procedure codes in 2024, for 2,982 Medicare patients. Medicare paid $92,970 for them.
Medicare services, 20244,477
Medicare patients2,982
Paid by Medicare$92,970
Procedure codes21
Dr. O'Day's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 2,3932024: 3,90963%
- Office and hospital visits
- 2023: 5082024: 4874%
- Imaging
- 2023: 302024: 64113%
- Other services
- 2023: 02024: 17
Where Dr. O'Day's Medicare services took place, 2024
- In an office2185%
- In a facility4,25995%
Dr. O'Day compared with the Massachusetts median for cardiologists, 2024
- Dr. O'Day
- Massachusetts median
- Medicare services
- 4,477vs 1,6122.8 times
- Medicare patients
- 2,982vs 9563.1 times
- Part D claims
- 1,765vs 8462.1 times
Medians across 817 cardiologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. O'Day's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kevin W. O'Day treated 2,982 Medicare patients in 2024, average age 74
CMS counts 2,982 Medicare patients who saw Dr. O'Day in 2024. The largest group is 65 to 74, with 1,067 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.06, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. O'Day's median patient age at 71, with 42% women.
Medicare patients, 20242,982
Average age74
Average risk score2.06
Also on Medicaid34%
Dr. O'Day's Medicare patients by age, 2024
Dr. O'Day's Medicare patients by sex, 2024
- Women1,47149%
- Men1,51151%
Chronic conditions among Dr. O'Day's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease52%
- Arthritis48%
- Chronic kidney disease43%
- Anxiety41%
- Atrial fibrillation41%
- Heart failure40%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Day's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women42%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kevin W. O'Day wrote 1,915 Medicare Part D claims in 2024
In 2024, Dr. O'Day wrote 1,915 Medicare Part D claims for 406 patients. 81% of them were for generic drugs. CMS names the drug for 1,765 of them, across 27 drugs with 11 or more claims each, at $360,508 in total drug cost. In 2023, CMS named 1,065 claims across 19 drugs.
Part D claims, 20241,915
Drugs named by CMS27
Total drug cost$360,508
Part D patients406
Dr. O'Day's Part D claims by kind of drug, 2024
- Generic1,560 claims81%
- Brand-name355 claims19%
Dr. O'Day's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,0652024: 1,76566%
Drugs named by CMS: 27 in 2024, 19 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Kevin W. O'Day scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. O'Day for performance year 2024, reported through an alternative payment model (APM). Dr. O'Day accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. O'Day's MIPS scores, performance year 2024
- 100of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Kevin W. O'Day has 5 publications on record
Dmand AI links 5 papers to Dr. O'Day, published from 2016 to 2021. The most frequent topics are Atrial Fibrillation, Anticoagulants and Cardiologists. Dr. O'Day has published most often in Am J Cardiol. Dr. O'Day's most frequent co-authors are David Dionne McManus, MD, Robert Goldberg, MD and Alok Kapoor, MD.
Papers5
Years published2016 to 2021
Dr. O'Day's papers by year, 2016 to 2021
Topics Dr. O'Day writes about most
- Atrial Fibrillation
- Anticoagulants
- Cardiologists
- Decision Support Systems, Clinical
- Stroke
Dr. O'Day's most frequent co-authors
- David Dionne McManus, MD3 shared papers
- Robert Goldberg, MD2 shared papers
- Alok Kapoor, MD2 shared papers
Recent publications by Dr. O'Day
Curr Cardiol Rep
Coronary Artery DiseaseDecision Support Systems, ClinicalDiabetic Cardiomyopathies
Atrial FibrillationHospital MortalityInpatients
AnticoagulantsAtrial FibrillationCardiologists
AnticoagulantsAtrial FibrillationCardiologists
See who Dr. O'Day researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. O'Day works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kevin W. O'Day received $12 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. O'Day from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $12.
Companies that paid Dr. O'Day the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kevin W. O'Day graduated from University of Massachusetts Medical School
Dr. O'Day graduated from University of Massachusetts Medical School in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kevin W. O'Day's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Kevin W. O'Day
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Kevin W. O'Day's NPI number?
Dr. Kevin W. O'Day's NPI number is 1255793220. It was assigned on March 28, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Kevin W. O'Day?
Dr. Kevin W. O'Day is a cardiologist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Kevin W. O'Day practice?
Dr. O'Day practices at 55 North Ave, Mendon, MA 01756. Dr. O'Day's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. O'Day to 4 hospitals.
What is Dr. Kevin W. O'Day's office phone number?
The practice phone on file for Dr. O'Day is (508) 334-1000.
What is Dr. Kevin W. O'Day's medical license number?
Dr. O'Day holds Massachusetts license 277626.
Which hospitals is Dr. Kevin W. O'Day affiliated with?
Dr. O'Day is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. O'Day to 4 more hospitals.
What medical group is Dr. Kevin W. O'Day part of?
Dr. O'Day is linked to UMass Memorial Medical Group.
Does Dr. Kevin W. O'Day accept Medicare?
Yes. CMS data shows Dr. O'Day billed Medicare for 4,477 services in 2024, and Dr. O'Day accepts Medicare assignment.
What is Dr. Kevin W. O'Day's MIPS score?
Dr. O'Day's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Kevin W. O'Day see?
CMS counts 2,982 Medicare patients who saw Dr. O'Day in 2024, with an average age of 74.
Show 7 more questionsShow fewer questions
What services does Dr. Kevin W. O'Day bill to Medicare?
In 2024, Dr. O'Day's most billed Medicare services were heart test or procedure (93010), heart test or procedure (93306) and office visit, established patient (99214).
Where did Dr. Kevin W. O'Day go to medical school?
Dr. O'Day graduated from University of Massachusetts Medical School in 2016.
What drugs does Dr. Kevin W. O'Day prescribe most?
In 2024 Medicare Part D data, Dr. O'Day's most prescribed drugs by claims were Metoprolol Succinate, Eliquis and Atorvastatin Calcium.
Has Dr. Kevin W. O'Day received payments from drug or device companies?
CMS Open Payments shows $12 in general payments to Dr. O'Day from 1 company from 2021 to 2021. The largest total came from Boston Scientific Corporation.
How long has Dr. Kevin W. O'Day been practicing?
Dr. O'Day graduated from medical school in 2016, 10 years ago.
Does Dr. Kevin W. O'Day do research?
Dmand AI links 5 publications to Dr. O'Day, published from 2016 to 2021.
Who does Dr. Kevin W. O'Day publish with?
Dr. O'Day's most frequent co-authors are David Dionne McManus, MD (3 shared papers), Robert Goldberg, MD (2 shared papers) and Alok Kapoor, MD (2 shared papers).
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