Emma O'Neil, AGNP-C
- Medicare patients, 2024
- 278
- Part D claims, 2024
- 1,594
- Hospital affiliations
- 2
- Industry payments
- $348
- Medical groups
- 2
- Practice address
- 166 Waterbury Rd, Prospect, CT 06712
- Practice phone
- Call (203) 756-6422
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Naugatuck Valley Gastroenterology Consultants LLC
Prospect, Connecticut
Find Emma O'Neil'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.
Emma O'Neil is a nurse practitioner in Prospect, Connecticut
Emma O'Neil practices at Naugatuck Valley Gastroenterology Consultants LLC in Prospect, Connecticut.
Emma O'Neil's NPI, 1154913150, was assigned on February 10, 2021. Emma O'Neil holds Connecticut license 9330.
- NPI
- 1154913150NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133537277
- NPI enumeration date
- February 10, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 756-6422
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Emma O'Neil practices at Naugatuck Valley Gastroenterology Consultants LLC in Prospect, Connecticut
Emma O'Neil's primary practice is Naugatuck Valley Gastroenterology Consultants LLC, at 166 Waterbury Rd, Prospect, CT 06712 in Naugatuck Vly County. The practice phone is (203) 756-6422.
- Naugatuck Valley Gastroenterology Consultants LLC166 Waterbury Rd, Prospect, CT 06712 · Naugatuck Vly CountyPhone(203) 756-6422
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Emma O'Neil is affiliated with 5 sites of care and 2 medical groups
Emma O'Neil's primary practice is Naugatuck Valley Gastroenterology Consultants LLC in Prospect, Connecticut. Emma O'Neil is also affiliated with Yale New Haven Hospital. The medical group on file is Endocrine Associates of Connecticut. Dmand AI also links Emma O'Neil to 1 more hospital, 2 group practices and clinics and 1 medical group, 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 Emma O'Neil's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Emma O'Neil practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Naugatuck Valley Gastroenterology Consultants LLC | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Emma O'Neil is one of 635 nurse practitioners in Connecticut
Nurse practitioner is Emma O'Neil's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Emma O'Neil is licensed in Connecticut.
Specialties and state licenses
- Nurse practitioner, ConnecticutPrimary
Nurse practitioners near Emma O'Neil
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
Emma O'Neil treated 278 Medicare patients in 2024, average age 75
CMS counts 278 Medicare patients who saw Emma O'Neil in 2024. The largest group is 65 to 74, with 104 patients. 75% of them have arthritis, and 75% have high blood pressure. 25% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Emma O'Neil's median patient age at 70, with 53% women.
Emma O'Neil's Medicare patients by age, 2024
Emma O'Neil's Medicare patients by sex, 2024
- Women18466%
- Men9434%
Chronic conditions among Emma O'Neil's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety38%
- Mood disorders32%
- Diabetes31%
- Depression29%
- Ischemic heart disease29%
Share of Medicare patients with each condition. A patient can have several.
Emma O'Neil's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women53%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Emma O'Neil wrote 1,594 Medicare Part D claims in 2024
In 2024, Emma O'Neil wrote 1,594 Medicare Part D claims for 422 patients. 95% of them were for generic drugs.
Emma O'Neil's Part D claims by kind of drug, 2024
- Generic1,513 claims95%
- Brand-name81 claims5%
Drug classes CMS tracks in Emma O'Neil's Part D claims, 2024
- Opioids32%515 of 1,594 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
Emma O'Neil offers telehealth to Medicare patients
Emma O'Neil accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Emma O'Neil as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Emma O'Neil received $348 in industry payments in 2025
CMS Open Payments shows 14 general payments to Emma O'Neil from 10 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $82.
Companies that paid Emma O'Neil 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 Emma O'Neil'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 Emma O'Neil
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Emma O'Neil's NPI number?
Emma O'Neil's NPI number is 1154913150. It was assigned on February 10, 2021, and it is active in the NPI Registry.
What does Emma O'Neil specialize in?
Emma O'Neil is a nurse practitioner in Prospect, Connecticut. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Emma O'Neil practice?
Emma O'Neil practices at 166 Waterbury Rd, Prospect, CT 06712. Emma O'Neil's primary practice is Naugatuck Valley Gastroenterology Consultants LLC in Prospect, Connecticut. Dmand AI also links Emma O'Neil to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Emma O'Neil's office phone number?
The practice phone on file for Emma O'Neil is (203) 756-6422.
What is Emma O'Neil's medical license number?
Emma O'Neil holds Connecticut license 9330.
Which hospitals is Emma O'Neil affiliated with?
Emma O'Neil is affiliated with Yale New Haven Hospital. Dmand AI links Emma O'Neil to 1 more hospital.
What medical group is Emma O'Neil part of?
Emma O'Neil is linked to Endocrine Associates of Connecticut. Dmand AI links Emma O'Neil to 1 more medical group.
Does Emma O'Neil accept Medicare?
Yes. CMS lists Emma O'Neil as accepting Medicare assignment.
Does Emma O'Neil offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Emma O'Neil as offering telehealth services.
How many Medicare patients does Emma O'Neil see?
CMS counts 278 Medicare patients who saw Emma O'Neil in 2024, with an average age of 75.
Has Emma O'Neil received payments from drug or device companies?
CMS Open Payments shows $348 in general payments to Emma O'Neil from 10 companies from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Emma O'Neil been practicing?
Emma O'Neil graduated from medical school in 2020, 6 years ago.
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