Amy O'Brien, NP
- Medicare patients, 2024
- 138
- Part D claims, 2024
- 1,243
- MIPS score, 2024
- 92
- Hospital affiliations
- 4
- Industry payments
- $14
- Practice address
- 41 Highland Avenue, Winchester, MA 01890
- Practice phone
- Call (781) 729-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Amy 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.
Amy O'Brien is a nurse practitioner in Winchester, Massachusetts
Amy O'Brien practices at Winchester Hospital in Winchester, Massachusetts, part of Beth Israel Lahey Health.
Amy O'Brien's NPI, 1427782358, was assigned on July 15, 2022. Amy O'Brien holds Massachusetts license RN2302203.
- NPI
- 1427782358NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032595145
- NPI enumeration date
- July 15, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (781) 729-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Amy O'Brien practices at Winchester Hospital in Winchester, Massachusetts
Amy O'Brien's primary practice is Winchester Hospital, at 41 Highland Avenue, Winchester, MA 01890 in Middlesex County. The practice phone is (781) 729-9000.
- Winchester Hospital41 Highland Avenue, Winchester, MA 01890 · Middlesex CountyPhone(781) 729-9000
Source: Dmand AI Affiliation Data
Amy O'Brien is affiliated with 4 sites of care and 2 medical groups
Amy O'Brien's primary practice is Winchester Hospital in Winchester, Massachusetts, part of Beth Israel Lahey Health. Amy O'Brien is also affiliated with Newton-Wellesley Hospital. The medical group on file is Mass General Brigham (formerly North Shore Physicians Group). Dmand AI also links Amy O'Brien to 2 more hospitals and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Amy O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Amy O'Brien practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Winchester Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Amy O'Brien is one of 2,511 nurse practitioners in Massachusetts
Nurse practitioner is Amy O'Brien's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Amy O'Brien is licensed in Massachusetts.
Specialties and state licenses
- Nurse practitioner, MassachusettsPrimary
Nurse practitioners near Amy O'Brien
Counts of nurse practitioners 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
Amy O'Brien treated 138 Medicare patients in 2024, average age 69
CMS counts 138 Medicare patients who saw Amy O'Brien in 2024. The largest group is 65 to 74, with 53 patients. 65% of them have high cholesterol, and 61% have high blood pressure. 29% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Amy O'Brien's median patient age at 56, with 74% women.
Amy O'Brien's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Amy O'Brien's Medicare patients by sex, 2024
- Women10878%
- Men3022%
Chronic conditions among Amy O'Brien's Medicare patients, 2024
- High cholesterol65%
- High blood pressure61%
- Arthritis42%
- Anxiety33%
- Diabetes25%
- Chronic kidney disease23%
- Mood disorders23%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Amy 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 56
Patient panel by sex, all payers
- Women74%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Amy O'Brien wrote 1,243 Medicare Part D claims in 2024
In 2024, Amy O'Brien wrote 1,243 Medicare Part D claims for 244 patients. 91% of them were for generic drugs.
Amy O'Brien's Part D claims by kind of drug, 2024
- Generic1,133 claims91%
- Brand-name and other110 claims9%
Drug classes CMS tracks in Amy O'Brien's Part D claims, 2024
- Opioids2%20 of 1,243 claims
- Antibiotics3%41 of 1,243 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
Amy O'Brien scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Amy O'Brien for performance year 2024, reported through an alternative payment model (APM). Amy O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Amy O'Brien as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Amy O'Brien's MIPS scores, performance year 2024
- 92of 100Final score
- 76.6of 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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Amy O'Brien received $14 in industry payments in 2025
CMS Open Payments shows 1 general payment to Amy O'Brien from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Inspire Medical Systems, Inc. paid the most, $14.
Companies that paid Amy 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 Amy 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 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)Clinician Public Reporting: Overall MIPS Performance (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 Amy 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 Amy O'Brien's NPI number?
Amy O'Brien's NPI number is 1427782358. It was assigned on July 15, 2022, and it is active in the NPI Registry.
What does Amy O'Brien specialize in?
Amy O'Brien is a nurse practitioner in Winchester, Massachusetts. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Amy O'Brien practice?
Amy O'Brien practices at 41 Highland Avenue, Winchester, MA 01890. Amy O'Brien's primary practice is Winchester Hospital in Winchester, Massachusetts, part of Beth Israel Lahey Health. Dmand AI also links Amy O'Brien to 2 hospitals and 1 medical group.
What is Amy O'Brien's office phone number?
The practice phone on file for Amy O'Brien is (781) 729-9000.
What is Amy O'Brien's medical license number?
Amy O'Brien holds Massachusetts license RN2302203.
Which hospitals is Amy O'Brien affiliated with?
Amy O'Brien practices at Winchester Hospital in Winchester, Massachusetts. Amy O'Brien is also affiliated with Newton-Wellesley Hospital. Dmand AI links Amy O'Brien to 2 more hospitals.
What medical group is Amy O'Brien part of?
Amy O'Brien is linked to Mass General Brigham (formerly North Shore Physicians Group). Dmand AI links Amy O'Brien to 1 more medical group.
Does Amy O'Brien accept Medicare?
Yes. CMS lists Amy O'Brien as accepting Medicare assignment.
Does Amy O'Brien offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Amy O'Brien as offering telehealth services.
What is Amy O'Brien's MIPS score?
Amy O'Brien's MIPS final score for performance year 2024 is 92 out of 100, reported through an alternative payment model (APM).
Show 3 more questionsShow fewer questions
How many Medicare patients does Amy O'Brien see?
CMS counts 138 Medicare patients who saw Amy O'Brien in 2024, with an average age of 69.
Has Amy O'Brien received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Amy O'Brien from 1 company from 2025 to 2025. The largest total came from Inspire Medical Systems, Inc.
How long has Amy O'Brien been practicing?
Amy O'Brien graduated from medical school in 2022, 4 years ago.
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