Patrick W. O'Brien, PA-C
- Medicare patients, 2024
- 27
- Part D claims, 2024
- 291
- Hospital affiliations
- 1
- Industry payments
- $144
- Medical groups
- 6
- Practice address
- 281 Western Blvd, Glastonbury, CT 06033
- Practice phone
- Call (860) 549-3210
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Orthopedic Associates of Hartford
Glastonbury, Connecticut
Find Patrick 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.
Patrick W. O'Brien is a surgical physician assistant in Glastonbury, Connecticut
Patrick O'Brien practices at Orthopedic Associates of Hartford in Glastonbury, Connecticut.
Patrick O'Brien's NPI, 1134577141, was assigned on May 31, 2016.
- NPI
- 1134577141NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022398239
- NPI enumeration date
- May 31, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 549-3210
- 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)
Patrick W. O'Brien practices at Orthopedic Associates of Hartford in Glastonbury, Connecticut
Patrick O'Brien's primary practice is Orthopedic Associates of Hartford, at 281 Western Blvd, Glastonbury, CT 06033 in Capitol County. The practice phone is (860) 549-3210.
- Orthopedic Associates of Hartford281 Western Blvd, Glastonbury, CT 06033 · Capitol CountyPhone(860) 549-3210
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Patrick W. O'Brien is affiliated with 3 sites of care and 6 medical groups
Patrick O'Brien's primary practice is Orthopedic Associates of Hartford in Glastonbury, Connecticut. Patrick O'Brien is also affiliated with Mercy Medical Center. The medical group on file is Orthopedic Associates of Hartford. Dmand AI also links Patrick O'Brien to 5 more medical groups and 1 group practice or clinic, 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 Patrick W. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Patrick O'Brien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orthopedic Associates of Hartford | Available with a free account |
| +2 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Patrick W. O'Brien is one of 699 surgical physician assistants in Connecticut
Surgical is Patrick O'Brien's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. Dmand AI has Patrick O'Brien's licenses on file in 2 states: Massachusetts and Connecticut.
Specialties and state licenses
- Surgical physician assistant, Massachusetts
- Connecticut license
Surgical physician assistants near Patrick O'Brien
Counts of surgical physician assistants 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
Patrick W. O'Brien treated 27 Medicare patients in 2024, average age 74
CMS counts 27 Medicare patients who saw Patrick O'Brien in 2024. The largest group is 65 to 74, with 12 patients. 75% of them have high cholesterol, and 67% have arthritis. Their average risk score is 0.98, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Patrick O'Brien's median patient age at 50, with 62% women.
Patrick O'Brien's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Patrick O'Brien's Medicare patients, 2024
- High cholesterol75%
- Arthritis67%
- High blood pressure67%
- Anxiety41%
Share of Medicare patients with each condition. A patient can have several.
Patrick 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 50
Patient panel by sex, all payers
- Women62%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Patrick W. O'Brien wrote 291 Medicare Part D claims in 2024
In 2024, Patrick O'Brien wrote 291 Medicare Part D claims for 78 patients. 89% of them were for generic drugs.
Patrick O'Brien's Part D claims by kind of drug, 2024
- Generic260 claims89%
- Brand-name31 claims11%
Drug classes CMS tracks in Patrick O'Brien's Part D claims, 2024
- Opioids34%98 of 291 claims
- Antibiotics9%26 of 291 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Patrick W. O'Brien takes part in Medicare
Patrick 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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Patrick W. O'Brien received $144 in industry payments in 2025
CMS Open Payments shows 2 general payments to Patrick O'Brien from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Solventum Corporation paid the most, $104.
Companies that paid Patrick O'Brien the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Patrick W. 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 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 (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) |
| 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 Patrick W. 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 Patrick W. O'Brien's NPI number?
Patrick W. O'Brien's NPI number is 1134577141. It was assigned on May 31, 2016, and it is active in the NPI Registry.
What does Patrick W. O'Brien specialize in?
Patrick W. O'Brien is a surgical physician assistant in Glastonbury, Connecticut. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).
Where does Patrick W. O'Brien practice?
Patrick O'Brien practices at 281 Western Blvd, Glastonbury, CT 06033. Patrick O'Brien's primary practice is Orthopedic Associates of Hartford in Glastonbury, Connecticut. Dmand AI also links Patrick O'Brien to 5 medical groups and 1 group practice or clinic.
What is Patrick W. O'Brien's office phone number?
The practice phone on file for Patrick O'Brien is (860) 549-3210.
Which states has Patrick W. O'Brien been licensed in?
Dmand AI has state licenses on file for Patrick O'Brien in Massachusetts and Connecticut.
Which hospitals is Patrick W. O'Brien affiliated with?
Patrick O'Brien is affiliated with Mercy Medical Center.
What medical group is Patrick W. O'Brien part of?
Patrick O'Brien is linked to Orthopedic Associates of Hartford. Dmand AI links Patrick O'Brien to 5 more medical groups.
Does Patrick W. O'Brien accept Medicare?
Yes. CMS lists Patrick O'Brien as accepting Medicare assignment.
How many Medicare patients does Patrick W. O'Brien see?
CMS counts 27 Medicare patients who saw Patrick O'Brien in 2024, with an average age of 74.
Has Patrick W. O'Brien received payments from drug or device companies?
CMS Open Payments shows $144 in general payments to Patrick O'Brien from 2 companies from 2025 to 2025. The largest total came from Solventum Corporation.
How long has Patrick W. O'Brien been practicing?
Patrick O'Brien graduated from medical school in 2016, 10 years ago.
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