Dr. James Christopher O'Brien, MD
- Medicare services, 2024
- 117
- Medicare patients, 2024
- 103
- Part D claims, 2024
- 23
- Industry payments
- $2,369
- Affiliated sites
- 1
- Practice address
- 599 Farmington Ave, Farmington, CT 06032
- Practice phone
- Call (860) 284-5200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Prohealth Physicians
Farmington, Connecticut
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. James Christopher O'Brien is a sleep medicine (internal medicine) physician in Farmington, Connecticut
Dr. O'Brien practices at Prohealth Physicians in Farmington, Connecticut.
Dr. O'Brien's NPI, 1962465070, was assigned on April 10, 2006. Dr. O'Brien graduated from New York Medical College in 1975. Dr. O'Brien holds Massachusetts license 40480.
- NPI
- 1962465070NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870550361
- NPI enumeration date
- April 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 284-5200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James Christopher O'Brien practices at Prohealth Physicians in Farmington, Connecticut
Dr. O'Brien's primary practice is Prohealth Physicians, at 599 Farmington Ave, Farmington, CT 06032 in Capitol County. The practice phone is (860) 284-5200.
- Prohealth Physicians599 Farmington Ave, Farmington, CT 06032 · Capitol CountyPhone(860) 284-5200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. James Christopher O'Brien is affiliated with 2 sites of care and 1 medical group
Dr. O'Brien's primary practice is Prohealth Physicians in Farmington, Connecticut. The medical group on file is Ear, Nose & Throat Institute of Connecticut. Dmand AI also links Dr. O'Brien to 1 more group practice or clinic, 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. James Christopher O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prohealth Physicians | 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. James Christopher O'Brien is one of 17 sleep medicine (internal medicine) physicians in Connecticut
Internal medicine is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207RS0012X. The record also lists sleep medicine. Dmand AI has Dr. O'Brien's licenses on file in 2 states: Massachusetts and Connecticut.
Specialties and state licenses
- Sleep medicine (internal medicine), MassachusettsPrimary
- Internal medicine, Connecticut
Sleep medicine (internal medicine) physicians near Dr. O'Brien
Counts of sleep medicine (internal 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. James Christopher O'Brien billed Medicare for 117 services in 2024
CMS data shows 117 Medicare services from Dr. O'Brien across 4 procedure codes in 2024, for 103 Medicare patients. Medicare paid $9,660 for them. Every service was in an office.
Dr. O'Brien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1312024: 6153%
- Office and hospital visits
- 2023: 1902024: 5671%
Dr. O'Brien compared with the Connecticut median for sleep medicine (internal medicine) physicians, 2024
- Dr. O'Brien
- Connecticut median
- Medicare services
- 117vs 28859% below
- Medicare patients
- 103vs 16839% below
- Part D claims
- 63vs 9332% below
Medians across 15 sleep medicine (internal medicine) physicians in Connecticut 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 sleep medicine (internal medicine) physicians in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James Christopher O'Brien treated 103 Medicare patients in 2024, average age 71
CMS counts 103 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 65 to 74, with 43 patients. 75% of them have high cholesterol, and 70% have high blood pressure. 17% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 66, with 41% women.
Dr. O'Brien's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. O'Brien's Medicare patients by sex, 2024
- Women4544%
- Men5856%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis52%
- Mood disorders29%
- Depression24%
- Diabetes24%
- Anxiety23%
- Atrial fibrillation23%
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 66
Patient panel by sex, all payers
- Women41%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. James Christopher O'Brien wrote 23 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 23 Medicare Part D claims for 11 patients. 83% of them were for generic drugs. They cover 2 drugs, with $1,178 in total drug cost. In 2022, CMS named 63 claims across 3 drugs.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic19 claims83%
- Brand-name and other4 claims17%
Dr. O'Brien's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 632023: 63No change
Drugs named by CMS: 2 in 2023, 3 in 2022.
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
How Dr. James Christopher O'Brien takes part in Medicare
Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. James Christopher O'Brien received $2,369 in industry payments from 2016 to 2025
CMS Open Payments shows 24 general payments to Dr. O'Brien from 10 drug and device companies from 2016 to 2025. Gifts make up the largest share, 61% of the total. Resmed Corp paid the most, $1,440.
General payments to Dr. O'Brien by program year, 2016 to 2025
General payments to Dr. O'Brien by kind, 2016 to 2025
- Gifts$1,44061%
- Food and beverage$92939%
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. James Christopher O'Brien graduated from New York Medical College
Dr. O'Brien graduated from New York Medical College in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James Christopher 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) |
| 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. James Christopher 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. James Christopher O'Brien's NPI number?
Dr. James Christopher O'Brien's NPI number is 1962465070. It was assigned on April 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. James Christopher O'Brien?
Dr. James Christopher O'Brien is a sleep medicine (internal medicine) physician in Farmington, Connecticut. The primary specialty in the NPI Registry is Sleep Medicine (Internal Medicine) Physician (taxonomy code 207RS0012X).
Where does Dr. James Christopher O'Brien practice?
Dr. O'Brien practices at 599 Farmington Ave, Farmington, CT 06032. Dr. O'Brien's primary practice is Prohealth Physicians in Farmington, Connecticut. Dmand AI also links Dr. O'Brien to 1 group practice or clinic.
What is Dr. James Christopher O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (860) 284-5200.
What is Dr. James Christopher O'Brien's medical license number?
Dr. O'Brien holds Massachusetts license 40480, one of the licenses on file in 2 states.
Which states has Dr. James Christopher O'Brien been licensed in?
Dmand AI has state licenses on file for Dr. O'Brien in Massachusetts and Connecticut.
What medical group is Dr. James Christopher O'Brien part of?
Dr. O'Brien is linked to Ear, Nose & Throat Institute of Connecticut.
Does Dr. James Christopher O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 117 services in 2024, and Dr. O'Brien accepts Medicare assignment.
How many Medicare patients does Dr. James Christopher O'Brien see?
CMS counts 103 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 71.
What services does Dr. James Christopher O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were nerve and brain test (95806), office visit, established patient (99214) and office visit, established patient (99213).
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Where did Dr. James Christopher O'Brien go to medical school?
Dr. O'Brien graduated from New York Medical College in 1975.
What drugs does Dr. James Christopher O'Brien prescribe most?
In 2023 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Gabapentin and Ropinirole HCl.
Has Dr. James Christopher O'Brien received payments from drug or device companies?
CMS Open Payments shows $2,369 in general payments to Dr. O'Brien from 10 companies from 2016 to 2025. The largest total came from Resmed Corp.
How long has Dr. James Christopher O'Brien been practicing?
Dr. O'Brien graduated from medical school in 1975, 51 years ago.
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