Nora Elizabeth O'Brien, ANP
- Medicare patients, 2024
- 145
- Part D claims, 2024
- 4,044
- Hospital affiliations
- 2
- Industry payments
- $243
- Medical groups
- 2
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Nora 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.
Nora Elizabeth O'Brien is a nurse practitioner in Saint Louis, Missouri
Nora O'Brien practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Nora O'Brien's NPI, 1841613205, was assigned on January 21, 2014. Nora O'Brien holds Missouri license 2013020387.
- NPI
- 1841613205NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224268792
- NPI enumeration date
- January 21, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 251-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Nora Elizabeth O'Brien practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Nora O'Brien's primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Nora Elizabeth O'Brien is affiliated with 4 sites of care and 2 medical groups
Nora O'Brien's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Nora O'Brien is also affiliated with Mercy Hospital South. The medical group on file is Mercy Clinic East Communities. Dmand AI also links Nora O'Brien to 2 more group practices and clinics 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 Nora Elizabeth O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nora O'Brien practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mercy and 6.2K+ hospitals, with verified contacts in the same login.
Nora Elizabeth O'Brien is one of 1,347 nurse practitioners in Missouri
Nurse practitioner is Nora O'Brien's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Nora O'Brien is licensed in Missouri.
Specialties and state licenses
- Nurse practitioner, MissouriPrimary
Nurse practitioners near Nora 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
Nora Elizabeth O'Brien treated 145 Medicare patients in 2024, average age 73
CMS counts 145 Medicare patients who saw Nora O'Brien in 2024. The largest group is 65 to 74, with 72 patients. 75% of them have high cholesterol, and 68% have high blood pressure. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Nora O'Brien's median patient age at 57, with 50% women.
Nora O'Brien's Medicare patients by age, 2024
Nora O'Brien's Medicare patients by sex, 2024
- Women7652%
- Men6948%
Chronic conditions among Nora O'Brien's Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis48%
- Mood disorders33%
- Chronic kidney disease31%
- Ischemic heart disease31%
- Depression30%
- Anxiety26%
Share of Medicare patients with each condition. A patient can have several.
Nora 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 57
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Nora Elizabeth O'Brien wrote 4,044 Medicare Part D claims in 2024
In 2024, Nora O'Brien wrote 4,044 Medicare Part D claims for 741 patients. 89% of them were for generic drugs.
Nora O'Brien's Part D claims by kind of drug, 2024
- Generic3,595 claims89%
- Brand-name428 claims11%
- Other21 claims1%
Drug classes CMS tracks in Nora O'Brien's Part D claims, 2024
- Antibiotics3%108 of 4,044 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
Nora Elizabeth O'Brien offers telehealth to Medicare patients
Nora O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Nora O'Brien as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Nora Elizabeth O'Brien received $243 in industry payments in 2025
CMS Open Payments shows 12 general payments to Nora O'Brien from 8 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $53.
Companies that paid Nora 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 Nora Elizabeth 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) |
| 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 Nora Elizabeth 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 Nora Elizabeth O'Brien's NPI number?
Nora Elizabeth O'Brien's NPI number is 1841613205. It was assigned on January 21, 2014, and it is active in the NPI Registry.
What does Nora Elizabeth O'Brien specialize in?
Nora Elizabeth O'Brien is a nurse practitioner in Saint Louis, Missouri. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Nora Elizabeth O'Brien practice?
Nora O'Brien practices at 615 New Ballas Road, Saint Louis, MO 63141. Nora O'Brien's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Nora O'Brien to 2 group practices and clinics and 1 medical group.
What is Nora Elizabeth O'Brien's office phone number?
The practice phone on file for Nora O'Brien is (314) 251-6000.
What is Nora Elizabeth O'Brien's medical license number?
Nora O'Brien holds Missouri license 2013020387.
Which hospitals is Nora Elizabeth O'Brien affiliated with?
Nora O'Brien practices at Mercy Hospital St. Louis in Saint Louis, Missouri. Nora O'Brien is also affiliated with Mercy Hospital South.
What medical group is Nora Elizabeth O'Brien part of?
Nora O'Brien is linked to Mercy Clinic East Communities. Dmand AI links Nora O'Brien to 1 more medical group.
Does Nora Elizabeth O'Brien accept Medicare?
Yes. CMS lists Nora O'Brien as accepting Medicare assignment.
Does Nora Elizabeth O'Brien offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Nora O'Brien as offering telehealth services.
How many Medicare patients does Nora Elizabeth O'Brien see?
CMS counts 145 Medicare patients who saw Nora O'Brien in 2024, with an average age of 73.
Has Nora Elizabeth O'Brien received payments from drug or device companies?
CMS Open Payments shows $243 in general payments to Nora O'Brien from 8 companies from 2025 to 2025. The largest total came from Pfizer Inc.
How long has Nora Elizabeth O'Brien been practicing?
Nora O'Brien graduated from medical school in 2012, 14 years ago.
Selling to nurse practitioner practices?
See nurse practitioners in Missouri by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card