Dr. Colin Daniel Brien, MD
- Medicare services, 2024
- 328
- Medicare patients, 2024
- 153
- Part D claims, 2024
- 138
- MIPS score, 2024
- 100
- Hospital affiliations
- 1
- Practice address
- 20 York Street, New Haven, CT 06510
- Practice phone
- Call (203) 688-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Yale New Haven Psychiatric Hospital (York St)
Psychiatric Inpatient Facility · New Haven, Connecticut
Find Dr. 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. Colin Daniel Brien is an internist in New Haven, Connecticut
Dr. Brien practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut.
Dr. Brien's NPI, 1649822347, was assigned on July 12, 2019. Dr. Brien graduated from University College Cork Faculty of Medicine in 2019. Dr. Brien holds Connecticut license 72247.
- NPI
- 1649822347NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901252634
- NPI enumeration date
- July 12, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 688-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Colin Daniel Brien practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut
Dr. Brien's primary practice is Yale New Haven Psychiatric Hospital (York St), at 20 York Street, New Haven, CT 06510. The practice phone is (203) 688-5900.
- Yale New Haven Psychiatric Hospital (York St)20 York Street, New Haven, CT 06510Phone(203) 688-5900
Source: Dmand AI Affiliation Data
Dr. Colin Daniel Brien is affiliated with 2 sites of care and 1 medical group
Dr. Brien's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Dr. Brien is also affiliated with Yale New Haven Hospital. The medical group on file is Northeast Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Colin Daniel Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Yale New Haven Psychiatric Hospital (York St) | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Colin Daniel Brien is one of 2,189 internists in Connecticut
Internal medicine is Dr. Brien's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Brien's licenses on file in 2 states: Connecticut and Michigan.
Specialties and state licenses
- Internal medicine, ConnecticutPrimary
- Student in an organized health care education/training program, Michigan
Internists near Dr. Brien
Counts of internists 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. Colin Daniel Brien billed Medicare for 328 services in 2024
CMS data shows 328 Medicare services from Dr. Brien across 6 procedure codes in 2024, for 153 Medicare patients. Medicare paid $23,431 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Brien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 502024: 328556%
Dr. Brien compared with the Connecticut median for internists, 2024
- Dr. Brien
- Connecticut median
- Medicare services
- 328vs 39016% below
- Medicare patients
- 153vs 17211% below
- Part D claims
- 11vs 34397% below
Medians across 2,185 internists in Connecticut with Dmand AI profiles that report each measure.
Dr. 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Colin Daniel Brien treated 153 Medicare patients in 2024, average age 77
CMS counts 153 Medicare patients who saw Dr. Brien in 2024. The largest group is 85 and over, with 52 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 46% are also on Medicaid. Their average risk score is 3.31, 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. Brien's median patient age at 75, with 49% women.
Dr. Brien's Medicare patients by age, 2024
Dr. Brien's Medicare patients by sex, 2024
- Women7549%
- Men7851%
Chronic conditions among Dr. Brien's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders62%
- Arthritis61%
- Anxiety56%
- Depression56%
- Diabetes53%
- Chronic kidney disease52%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 75
Patient panel by sex, all payers
- Women49%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Colin Daniel Brien wrote 138 Medicare Part D claims in 2024
In 2024, Dr. Brien wrote 138 Medicare Part D claims for 50 patients. 72% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $56 in total drug cost. In 2023, CMS named 13 claims across 1 drug.
Dr. Brien's Part D claims by kind of drug, 2024
- Generic100 claims72%
- Brand-name and other38 claims28%
Dr. 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. Brien's Part D claims, 2024
- Antibiotics14%19 of 138 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: 132024: 1115%
Drugs named by CMS: 1 in 2024, 1 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. Colin Daniel Brien 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. Brien for performance year 2024, reported through an alternative payment model (APM). Dr. Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Brien's MIPS scores, performance year 2024
- 100of 100Final score
- 86.5of 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. Colin Daniel Brien received $51 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Brien from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $51.
Companies that paid Dr. Brien the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Colin Daniel Brien graduated from University College Cork Faculty of Medicine
Dr. Brien graduated from University College Cork Faculty of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Colin Daniel 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. Colin Daniel 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. Colin Daniel Brien's NPI number?
Dr. Colin Daniel Brien's NPI number is 1649822347. It was assigned on July 12, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Colin Daniel Brien?
Dr. Colin Daniel Brien is an internist in New Haven, Connecticut. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Colin Daniel Brien practice?
Dr. Brien practices at 20 York Street, New Haven, CT 06510. Dr. Brien's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut.
What is Dr. Colin Daniel Brien's office phone number?
The practice phone on file for Dr. Brien is (203) 688-5900.
What is Dr. Colin Daniel Brien's medical license number?
Dr. Brien holds Connecticut license 72247, one of the licenses on file in 2 states.
Which states has Dr. Colin Daniel Brien been licensed in?
Dmand AI has state licenses on file for Dr. Brien in Connecticut and Michigan.
Which hospitals is Dr. Colin Daniel Brien affiliated with?
Dr. Brien is affiliated with Yale New Haven Hospital.
What medical group is Dr. Colin Daniel Brien part of?
Dr. Brien is linked to Northeast Medical Group.
Does Dr. Colin Daniel Brien accept Medicare?
Yes. CMS data shows Dr. Brien billed Medicare for 328 services in 2024, and Dr. Brien accepts Medicare assignment.
What is Dr. Colin Daniel Brien's MIPS score?
Dr. Brien's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Colin Daniel Brien see?
CMS counts 153 Medicare patients who saw Dr. Brien in 2024, with an average age of 77.
What services does Dr. Colin Daniel Brien bill to Medicare?
In 2024, Dr. Brien's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99231) and hospital inpatient care (99239).
Where did Dr. Colin Daniel Brien go to medical school?
Dr. Brien graduated from University College Cork Faculty of Medicine in 2019.
What drugs does Dr. Colin Daniel Brien prescribe most?
In 2024 Medicare Part D data, Dr. Brien's most prescribed drugs by claims were Levothyroxine Sodium.
Has Dr. Colin Daniel Brien received payments from drug or device companies?
CMS Open Payments shows $51 in general payments to Dr. Brien from 1 company from 2019 to 2019. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Colin Daniel Brien been practicing?
Dr. Brien graduated from medical school in 2019, 7 years ago.
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