Mary Alice O'Brien, FNP
- Medicare patients, 2024
- 174
- Part D claims, 2024
- 273
- Affiliated sites
- 2
- Medical groups
- 3
- State license
- 1
- Practice address
- 1019 Trapelo Rd, Waltham, MA 02452
- Practice phone
- Call (203) 885-0808
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
American Family Care North Waltham
Urgent Care Center · Waltham, Massachusetts
Find Mary 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.
Mary Alice O'Brien is a nurse practitioner in Waltham, Massachusetts
Mary O'Brien practices at American Family Care North Waltham in Waltham, Massachusetts.
Mary O'Brien's NPI, 1821176264, was assigned on November 2, 2006. Mary O'Brien holds New York license F-334399.
- NPI
- 1821176264NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163476615
- NPI enumeration date
- November 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 885-0808
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Alice O'Brien practices at American Family Care North Waltham in Waltham, Massachusetts
Mary O'Brien's primary practice is American Family Care North Waltham, at 1019 Trapelo Rd, Waltham, MA 02452. The practice phone is (203) 885-0808.
- American Family Care North Waltham1019 Trapelo Rd, Waltham, MA 02452Phone(203) 885-0808
Source: Dmand AI Affiliation Data
Mary Alice O'Brien is affiliated with 2 sites of care and 3 medical groups
Mary O'Brien's primary practice is American Family Care North Waltham in Waltham, Massachusetts. The medical group on file is Yale New Haven Health Urgent Care. Dmand AI also links Mary O'Brien to 2 more medical groups and 1 group practice or clinic, each named with a free account. Mary O'Brien's employer is on file too: an urgent care center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mary Alice O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary O'Brien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| American Family Care North Waltham | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Mary Alice O'Brien is one of 2,511 nurse practitioners in Massachusetts
Nurse practitioner is Mary O'Brien's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Mary O'Brien is licensed in New York.
Specialties and state licenses
- Nurse practitioner, New YorkPrimary
Nurse practitioners near Mary 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
Mary Alice O'Brien treated 174 Medicare patients in 2024, average age 74
CMS counts 174 Medicare patients who saw Mary O'Brien in 2024. The largest group is 65 to 74, with 87 patients. 75% of them have high cholesterol, and 65% have high blood pressure. 13% 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 Mary O'Brien's median patient age at 47, with 71% women.
Mary O'Brien's Medicare patients by age, 2024
Mary O'Brien's Medicare patients by sex, 2024
- Women9052%
- Men8448%
Chronic conditions among Mary O'Brien's Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Arthritis48%
- Anxiety30%
- Ischemic heart disease24%
- Diabetes22%
- Cancer20%
- Mood disorders18%
Share of Medicare patients with each condition. A patient can have several.
Mary 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 47
Patient panel by sex, all payers
- Women71%
- Men27%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary Alice O'Brien wrote 273 Medicare Part D claims in 2024
In 2024, Mary O'Brien wrote 273 Medicare Part D claims for 200 patients. 88% of them were for generic drugs.
Mary O'Brien's Part D claims by kind of drug, 2024
- Generic240 claims88%
- Brand-name33 claims12%
Drug classes CMS tracks in Mary O'Brien's Part D claims, 2024
- Antibiotics47%129 of 273 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
How Mary Alice O'Brien takes part in Medicare
Mary 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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Sources for Mary Alice 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) |
| 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 Mary Alice 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 Mary Alice O'Brien's NPI number?
Mary Alice O'Brien's NPI number is 1821176264. It was assigned on November 2, 2006, and it is active in the NPI Registry.
What does Mary Alice O'Brien specialize in?
Mary Alice O'Brien is a nurse practitioner in Waltham, Massachusetts. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Mary Alice O'Brien practice?
Mary O'Brien practices at 1019 Trapelo Rd, Waltham, MA 02452. Mary O'Brien's primary practice is American Family Care North Waltham in Waltham, Massachusetts. Dmand AI also links Mary O'Brien to 2 medical groups and 1 group practice or clinic.
What is Mary Alice O'Brien's office phone number?
The practice phone on file for Mary O'Brien is (203) 885-0808.
What is Mary Alice O'Brien's medical license number?
Mary O'Brien holds New York license F-334399.
What medical group is Mary Alice O'Brien part of?
Mary O'Brien is linked to Yale New Haven Health Urgent Care. Dmand AI links Mary O'Brien to 2 more medical groups.
Does Mary Alice O'Brien accept Medicare?
Yes. CMS lists Mary O'Brien as accepting Medicare assignment.
How many Medicare patients does Mary Alice O'Brien see?
CMS counts 174 Medicare patients who saw Mary O'Brien in 2024, with an average age of 74.
How long has Mary Alice O'Brien been practicing?
Mary O'Brien graduated from medical school in 2004, 22 years ago.
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