Dr. Daniel Thomas O'Brien, DO
- Medicare services, 2024
- 982
- Medicare patients, 2024
- 699
- Part D claims, 2024
- 391
- MIPS score, 2024
- 87
- Hospital affiliations
- 2
- Practice address
- 901 Macarthur Blvd, Munster, IN 46321
- Practice phone
- Call (219) 836-1600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. O'Brien's professional email, personal email and mobile number
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Dr. Daniel Thomas O'Brien is an emergency medicine physician in Munster, Indiana
Dr. O'Brien practices at Community Hospital in Munster, Indiana, part of Community Healthcare System.
Dr. O'Brien's NPI, 1730678665, was assigned on May 7, 2018. Dr. O'Brien graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2018. Dr. O'Brien holds Illinois license 036157306.
- NPI
- 1730678665NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587914650
- NPI enumeration date
- May 7, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (219) 836-1600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel Thomas O'Brien practices at Community Hospital in Munster, Indiana
Dr. O'Brien's primary practice is Community Hospital, at 901 Macarthur Blvd, Munster, IN 46321 in Lake County. The practice phone is (219) 836-1600.
- Community Hospital901 Macarthur Blvd, Munster, IN 46321 · Lake CountyPhone(219) 836-1600
Source: Dmand AI Affiliation Data
Dr. Daniel Thomas O'Brien is affiliated with 2 sites of care and 4 medical groups
Dr. O'Brien's primary practice is Community Hospital in Munster, Indiana, part of Community Healthcare System. Dr. O'Brien is also affiliated with Resurrection Medical Center. The medical group on file is CEP America. Dmand AI also links Dr. O'Brien to 3 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel Thomas O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Community Hospital | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel Thomas O'Brien is one of 1,275 emergency medicine physicians in Indiana
Emergency medicine is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. O'Brien's licenses on file in 2 states: Illinois and Indiana.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
- Indiana license
Emergency medicine physicians near Dr. O'Brien
Counts of emergency medicine 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. Daniel Thomas O'Brien billed Medicare for 982 services in 2024
CMS data shows 982 Medicare services from Dr. O'Brien across 5 procedure codes in 2024, for 699 Medicare patients. Medicare paid $94,306 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. O'Brien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7792024: 7395%
- Tests and treatments
- 2023: 252024: 243872%
- Surgery
- 2023: 112024: 0100%
Dr. O'Brien compared with the Indiana median for emergency medicine physicians, 2024
- Dr. O'Brien
- Indiana median
- Medicare services
- 982vs 3043.2 times
- Medicare patients
- 699vs 2772.5 times
- Part D claims
- 221vs 922.4 times
Medians across 1,276 emergency medicine physicians in Indiana 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 emergency medicine physicians in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel Thomas O'Brien treated 699 Medicare patients in 2024, average age 76
CMS counts 699 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 75 to 84, with 254 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 2.50, 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 65, with 55% women.
Dr. O'Brien's Medicare patients by age, 2024
Dr. O'Brien's Medicare patients by sex, 2024
- Women40358%
- Men29642%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis67%
- Ischemic heart disease54%
- Diabetes49%
- Chronic kidney disease46%
- Heart failure46%
- Mood disorders39%
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 65
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel Thomas O'Brien wrote 391 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 391 Medicare Part D claims for 268 patients. 95% of them were for generic drugs. CMS names the drug for 221 of them, across 10 drugs with 11 or more claims each, at $864 in total drug cost. In 2023, CMS named 185 claims across 8 drugs.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic372 claims95%
- Brand-name19 claims5%
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
- Opioids9%37 of 391 claims
- Antibiotics33%130 of 391 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: 1852024: 22119%
Drugs named by CMS: 10 in 2024, 8 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. Daniel Thomas 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
- 70.9of 100Quality
- 40of 100Improvement Activities
- 93of 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. Daniel Thomas O'Brien received $19 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. O'Brien from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Penumbra, Inc. paid the most, $19.
Companies that paid Dr. O'Brien the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daniel Thomas O'Brien graduated from Kansas City University of Med & Biosciences, College of Osteo Med
Dr. O'Brien graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel Thomas 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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. Daniel Thomas 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. Daniel Thomas O'Brien's NPI number?
Dr. Daniel Thomas O'Brien's NPI number is 1730678665. It was assigned on May 7, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel Thomas O'Brien?
Dr. Daniel Thomas O'Brien is an emergency medicine physician in Munster, Indiana. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Daniel Thomas O'Brien practice?
Dr. O'Brien practices at 901 Macarthur Blvd, Munster, IN 46321. Dr. O'Brien's primary practice is Community Hospital in Munster, Indiana, part of Community Healthcare System. Dmand AI also links Dr. O'Brien to 3 medical groups.
What is Dr. Daniel Thomas O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (219) 836-1600.
What is Dr. Daniel Thomas O'Brien's medical license number?
Dr. O'Brien holds Illinois license 036157306, one of the licenses on file in 2 states.
Which states has Dr. Daniel Thomas O'Brien been licensed in?
Dmand AI has state licenses on file for Dr. O'Brien in Illinois and Indiana.
Which hospitals is Dr. Daniel Thomas O'Brien affiliated with?
Dr. O'Brien practices at Community Hospital in Munster, Indiana. Dr. O'Brien is also affiliated with Resurrection Medical Center.
What medical group is Dr. Daniel Thomas O'Brien part of?
Dr. O'Brien is linked to CEP America. Dmand AI links Dr. O'Brien to 3 more medical groups.
Does Dr. Daniel Thomas O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 982 services in 2024, and Dr. O'Brien accepts Medicare assignment.
What is Dr. Daniel Thomas 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.
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How many Medicare patients does Dr. Daniel Thomas O'Brien see?
CMS counts 699 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 76.
What services does Dr. Daniel Thomas O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were emergency department visit (99285), heart test or procedure (93042) and critical care (99291).
Where did Dr. Daniel Thomas O'Brien go to medical school?
Dr. O'Brien graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2018.
What drugs does Dr. Daniel Thomas O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Ibuprofen and Ondansetron ODT.
Has Dr. Daniel Thomas O'Brien received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Dr. O'Brien from 1 company from 2023 to 2023. The largest total came from Penumbra, Inc.
How long has Dr. Daniel Thomas O'Brien been practicing?
Dr. O'Brien graduated from medical school in 2018, 8 years ago.
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