Danielle O'Brien, APRN
- Part D claims, 2024
- 100
- Industry payments
- $21
- Affiliated sites
- 1
- Medical groups
- 3
- State license
- 1
- Practice address
- 21 Grand Street, Hartford, CT 06106
- Practice phone
- Call (860) 550-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Charter Oak Health Center - Hartford (Grand St)
FQHC - Main Site · Hartford, Connecticut
Find Danielle 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.
Danielle O'Brien is a family nurse practitioner in Hartford, Connecticut
Danielle O'Brien practices at Charter Oak Health Center - Hartford (Grand St) in Hartford, Connecticut.
Danielle O'Brien's NPI, 1013562784, was assigned on August 8, 2019. Danielle O'Brien holds Connecticut license 8379.
- NPI
- 1013562784NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4385974872
- NPI enumeration date
- August 8, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 550-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- 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)
Danielle O'Brien practices at Charter Oak Health Center - Hartford (Grand St) in Hartford, Connecticut
Danielle O'Brien's primary practice is Charter Oak Health Center - Hartford (Grand St), at 21 Grand Street, Hartford, CT 06106 in Capitol County. The practice phone is (860) 550-7500.
- Charter Oak Health Center - Hartford (Grand St)21 Grand Street, Hartford, CT 06106 · Capitol CountyPhone(860) 550-7500
Source: Dmand AI Affiliation Data
Danielle O'Brien is affiliated with 1 site of care and 3 medical groups
Danielle O'Brien's primary practice is Charter Oak Health Center - Hartford (Grand St) in Hartford, Connecticut. The medical group on file is Trinity Health Of New England Medical Group. Dmand AI also links Danielle O'Brien to 2 more medical groups, each named with a free account. Danielle O'Brien's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Danielle O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Danielle O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Charter Oak Health Center - Hartford (Grand St) | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Danielle O'Brien is one of 2,105 family nurse practitioners in Connecticut
Family is Danielle O'Brien's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Danielle O'Brien is licensed in Connecticut.
Specialties and state licenses
- Family nurse practitioner, ConnecticutPrimary
Family nurse practitioners near Danielle O'Brien
Counts of family 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
Danielle O'Brien's patients have a median age of 48
Across all payers, Dmand AI patient panel data puts Danielle O'Brien's median patient age at 48, with 64% women.
Danielle 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 48
Patient panel by sex, all payers
- Women64%
- Men35%
Source: Dmand AI Patient Panel Data
Danielle O'Brien wrote 100 Medicare Part D claims in 2024
In 2024, Danielle O'Brien wrote 100 Medicare Part D claims for 38 patients. 79% of them were for generic drugs.
Danielle O'Brien's Part D claims by kind of drug, 2024
- Generic79 claims79%
- Brand-name21 claims21%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Danielle O'Brien takes part in Medicare
Danielle 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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Danielle O'Brien received $21 in industry payments in 2025
CMS Open Payments shows 1 general payment to Danielle O'Brien from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $21.
Companies that paid Danielle 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 Danielle 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) |
| 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 Danielle 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 Danielle O'Brien's NPI number?
Danielle O'Brien's NPI number is 1013562784. It was assigned on August 8, 2019, and it is active in the NPI Registry.
What does Danielle O'Brien specialize in?
Danielle O'Brien is a family nurse practitioner in Hartford, Connecticut. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Danielle O'Brien practice?
Danielle O'Brien practices at 21 Grand Street, Hartford, CT 06106. Danielle O'Brien's primary practice is Charter Oak Health Center - Hartford (Grand St) in Hartford, Connecticut. Dmand AI also links Danielle O'Brien to 2 medical groups.
What is Danielle O'Brien's office phone number?
The practice phone on file for Danielle O'Brien is (860) 550-7500.
What is Danielle O'Brien's medical license number?
Danielle O'Brien holds Connecticut license 8379.
What medical group is Danielle O'Brien part of?
Danielle O'Brien is linked to Trinity Health Of New England Medical Group. Dmand AI links Danielle O'Brien to 2 more medical groups.
Does Danielle O'Brien accept Medicare?
Yes. CMS lists Danielle O'Brien as accepting Medicare assignment.
Has Danielle O'Brien received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Danielle O'Brien from 1 company from 2025 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Danielle O'Brien been practicing?
Danielle O'Brien graduated from medical school in 2019, 7 years ago.
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