Emily Lydia O'Brien, PA-C
- Part D claims, 2024
- 147
- Hospital affiliations
- 1
- Industry payments
- $97
- Medical group
- 1
- State license
- 1
- Practice address
- 3400 Spruce St, Philadelphia, PA 19104
- Practice phone
- Call (215) 662-6289
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Emily 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.
Emily Lydia O'Brien is a physician assistant in Philadelphia, Pennsylvania
Emily O'Brien practices at Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania, part of University of Pennsylvania.
Emily O'Brien's NPI, 1861188666, was assigned on April 13, 2023. Emily O'Brien holds Pennsylvania license MA064405.
- NPI
- 1861188666NPI Registry (opens in a new tab)
- NPI enumeration date
- April 13, 2023
- NPI status
- Active
- Practice phone
- (215) 662-6289
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Emily Lydia O'Brien practices at Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania
Emily O'Brien's primary practice is Hospital of the University of Pennsylvania, at 3400 Spruce St, Philadelphia, PA 19104 in Philadelphia County. The practice phone is (215) 662-6289.
- Hospital of the University of Pennsylvania3400 Spruce St, Philadelphia, PA 19104 · Philadelphia CountyPhone(215) 662-6289
Source: Dmand AI Affiliation Data
Emily Lydia O'Brien is affiliated with 1 site of care and 1 medical group
Emily O'Brien's primary practice is Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania, part of University of Pennsylvania. The medical group on file is Penn Medicine Lancaster General Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Emily Lydia O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Emily O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hospital of the University of Pennsylvania | Available with a free account |
Source: Dmand AI Technology Install Data
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Emily Lydia O'Brien is one of 6,491 physician assistants in Pennsylvania
Physician assistant is Emily O'Brien's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Emily O'Brien is licensed in Pennsylvania.
Specialties and state licenses
- Physician assistant, PennsylvaniaPrimary
Physician assistants near Emily O'Brien
Counts of 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
Emily Lydia O'Brien's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Emily O'Brien's median patient age at 68, with 25% women.
Emily 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 68
Patient panel by sex, all payers
- Women25%
- Men75%
Source: Dmand AI Patient Panel Data
Emily Lydia O'Brien wrote 147 Medicare Part D claims in 2024
In 2024, Emily O'Brien wrote 147 Medicare Part D claims for 65 patients. 93% of them were for generic drugs.
Emily O'Brien's Part D claims by kind of drug, 2024
- Generic137 claims93%
- Brand-name and other10 claims7%
Drug classes CMS tracks in Emily O'Brien's Part D claims, 2024
- Opioids30%44 of 147 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
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Emily Lydia O'Brien received $97 in industry payments in 2025
CMS Open Payments shows 1 general payment to Emily O'Brien from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $97.
Companies that paid Emily 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 Emily Lydia 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 Emily Lydia O'Brien
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What is Emily Lydia O'Brien's NPI number?
Emily Lydia O'Brien's NPI number is 1861188666. It was assigned on April 13, 2023, and it is active in the NPI Registry.
What does Emily Lydia O'Brien specialize in?
Emily Lydia O'Brien is a physician assistant in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Emily Lydia O'Brien practice?
Emily O'Brien practices at 3400 Spruce St, Philadelphia, PA 19104. Emily O'Brien's primary practice is Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania, part of University of Pennsylvania.
What is Emily Lydia O'Brien's office phone number?
The practice phone on file for Emily O'Brien is (215) 662-6289.
What is Emily Lydia O'Brien's medical license number?
Emily O'Brien holds Pennsylvania license MA064405.
Which hospitals is Emily Lydia O'Brien affiliated with?
Emily O'Brien practices at Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania.
What medical group is Emily Lydia O'Brien part of?
Emily O'Brien is linked to Penn Medicine Lancaster General Health.
Has Emily Lydia O'Brien received payments from drug or device companies?
CMS Open Payments shows $97 in general payments to Emily O'Brien from 1 company from 2025 to 2025. The largest total came from Amgen Inc.
How long has Emily Lydia O'Brien been practicing?
Emily O'Brien's NPI was assigned in 2023.
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