Dr. Thomas M. O'Brien, MD
- Medicare services, 2024
- 1,274
- Medicare patients, 2024
- 585
- Part D claims, 2024
- 8,038
- MIPS score, 2024
- 87
- Hospital affiliations
- 3
- Practice address
- 6939 Cox Rd, Liberty Township, OH 45069
- Practice phone
- Call (513) 721-8881
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Christ Hospital Cardiovascular Associates
Liberty Township, Ohio
Find Dr. O'Brien's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Thomas M. O'Brien is an advanced heart failure and transplant cardiology physician in Liberty Township, Ohio
Dr. O'Brien practices at The Christ Hospital Cardiovascular Associates in Liberty Township, Ohio.
Dr. O'Brien's NPI, 1003844366, was assigned on June 28, 2006. Dr. O'Brien graduated from University of Rochester School of Medicine and Dentistry in 2001. Dr. O'Brien holds Ohio license 35082223.
- NPI
- 1003844366NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749367530
- NPI enumeration date
- June 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (513) 721-8881
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas M. O'Brien practices at The Christ Hospital Cardiovascular Associates in Liberty Township, Ohio
Dr. O'Brien's primary practice is The Christ Hospital Cardiovascular Associates, at 6939 Cox Rd, Liberty Township, OH 45069 in Butler County. The practice phone is (513) 721-8881.
- The Christ Hospital Cardiovascular Associates6939 Cox Rd, Liberty Township, OH 45069 · Butler CountyPhone(513) 721-8881
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Thomas M. O'Brien is affiliated with 6 sites of care and 3 medical groups
Dr. O'Brien's primary practice is The Christ Hospital Cardiovascular Associates in Liberty Township, Ohio. Dr. O'Brien is also affiliated with Bethesda North Hospital. The medical group on file is Premier Health Specialists. Dmand AI also links Dr. O'Brien to 2 more hospitals, 2 medical groups, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Thomas M. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Christ Hospital Cardiovascular Associates | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas M. O'Brien is one of 56 advanced heart failures and transplant cardiology physicians in Ohio
Advanced heart failure and transplant cardiology is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207RA0001X. Dr. O'Brien is licensed in Ohio.
Specialties and state licenses
- Advanced heart failure and transplant cardiology, OhioPrimary
Advanced heart failures and transplant cardiology physicians near Dr. O'Brien
Counts of advanced heart failures and transplant cardiology physicians 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. Thomas M. O'Brien billed Medicare for 1,274 services in 2024
CMS data shows 1,274 Medicare services from Dr. O'Brien across 12 procedure codes in 2024, for 585 Medicare patients. Medicare paid $71,431 for them.
Dr. O'Brien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0922024: 79627%
- Tests and treatments
- 2023: 6032024: 47821%
Where Dr. O'Brien's Medicare services took place, 2024
- In an office1,12188%
- In a facility15312%
Dr. O'Brien compared with the Ohio median for advanced heart failures and transplant cardiology physicians, 2024
- Dr. O'Brien
- Ohio median
- Medicare services
- 1,274vs 6232.0 times
- Medicare patients
- 585vs 30492% above
- Part D claims
- 7,628vs 2,1263.6 times
Medians across 55 advanced heart failures and transplant cardiology physicians in Ohio with Dmand AI profiles that report each measure.
Dr. O'Brien'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. O'Brien and other advanced heart failures and transplant cardiology physicians in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas M. O'Brien treated 585 Medicare patients in 2024, average age 75
CMS counts 585 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 65 to 74, with 265 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.58, 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'Brien's median patient age at 71, with 46% women.
Dr. O'Brien's Medicare patients by age, 2024
Dr. O'Brien's Medicare patients by sex, 2024
- Women28048%
- Men30552%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease63%
- Arthritis48%
- Atrial fibrillation42%
- Diabetes39%
- Heart failure38%
- Chronic kidney disease32%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Brien'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
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas M. O'Brien wrote 8,038 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 8,038 Medicare Part D claims for 1,037 patients. 81% of them were for generic drugs. CMS names the drug for 7,628 of them, across 71 drugs with 11 or more claims each, at $1,578,579 in total drug cost. In 2023, CMS named 6,780 claims across 65 drugs.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic6,541 claims81%
- Brand-name and other1,497 claims19%
Dr. O'Brien'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.
Drug classes CMS tracks in Dr. O'Brien's Part D claims, 2024
- Antibiotics0%29 of 8,038 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,7802024: 7,62813%
Drugs named by CMS: 71 in 2024, 65 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. Thomas M. O'Brien scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. O'Brien for performance year 2024, reported as part of a group. Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. O'Brien's MIPS scores, performance year 2024
- 87of 100Final score
- 77.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
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. Thomas M. O'Brien received $292,684 in industry payments from 2016 to 2025
CMS Open Payments shows 309 general payments to Dr. O'Brien from 21 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 89% of the total. Novartis Pharmaceuticals Corporation paid the most, $219,505.
General payments to Dr. O'Brien by program year, 2016 to 2025
General payments to Dr. O'Brien by kind, 2016 to 2025
- Speaker and faculty fees$259,20889%
- Travel and lodging$22,6938%
- Food and beverage$10,3234%
- Consulting fees$4500%
- Education$100%
Companies that paid Dr. O'Brien the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas M. O'Brien graduated from University of Rochester School of Medicine and Dentistry
Dr. O'Brien graduated from University of Rochester School of Medicine and Dentistry in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas M. O'Brien'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 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) |
| 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. Thomas M. O'Brien
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. Thomas M. O'Brien's NPI number?
Dr. Thomas M. O'Brien's NPI number is 1003844366. It was assigned on June 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas M. O'Brien?
Dr. Thomas M. O'Brien is an advanced heart failure and transplant cardiology physician in Liberty Township, Ohio. The primary specialty in the NPI Registry is Advanced Heart Failure and Transplant Cardiology Physician (taxonomy code 207RA0001X).
Where does Dr. Thomas M. O'Brien practice?
Dr. O'Brien practices at 6939 Cox Rd, Liberty Township, OH 45069. Dr. O'Brien's primary practice is The Christ Hospital Cardiovascular Associates in Liberty Township, Ohio. Dmand AI also links Dr. O'Brien to 2 hospitals, 2 medical groups, 1 group practice or clinic and 1 home health agency.
What is Dr. Thomas M. O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (513) 721-8881.
What is Dr. Thomas M. O'Brien's medical license number?
Dr. O'Brien holds Ohio license 35082223.
Which hospitals is Dr. Thomas M. O'Brien affiliated with?
Dr. O'Brien is affiliated with Bethesda North Hospital. Dmand AI links Dr. O'Brien to 2 more hospitals.
What medical group is Dr. Thomas M. O'Brien part of?
Dr. O'Brien is linked to Premier Health Specialists. Dmand AI links Dr. O'Brien to 2 more medical groups.
Does Dr. Thomas M. O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 1,274 services in 2024, and Dr. O'Brien accepts Medicare assignment.
What is Dr. Thomas M. O'Brien's MIPS score?
Dr. O'Brien's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
How many Medicare patients does Dr. Thomas M. O'Brien see?
CMS counts 585 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Thomas M. O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93000) and heart test or procedure (93750).
Where did Dr. Thomas M. O'Brien go to medical school?
Dr. O'Brien graduated from University of Rochester School of Medicine and Dentistry in 2001.
What drugs does Dr. Thomas M. O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Eliquis.
Has Dr. Thomas M. O'Brien received payments from drug or device companies?
CMS Open Payments shows $292,684 in general payments to Dr. O'Brien from 21 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Thomas M. O'Brien been practicing?
Dr. O'Brien graduated from medical school in 2001, 25 years ago.
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