Mary Katherine Marcellus, CNP
- Industry payments
- $27
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2023
- Practice address
- 45 Dan Rd, Canton, MA 02021
- Practice phone
- Call (781) 867-2050
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Vantage Healthcare
Canton, Massachusetts
Find Mary Marcellus' 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 Katherine Marcellus is a family nurse practitioner in Canton, Massachusetts
Mary Marcellus practices at Vantage Healthcare in Canton, Massachusetts.
Mary Marcellus' NPI, 1700662004, was assigned on September 4, 2023. Mary Marcellus holds Massachusetts license RN2329432.
- NPI
- 1700662004NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3577044601
- NPI enumeration date
- September 4, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (781) 867-2050
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Katherine Marcellus practices at Vantage Healthcare in Canton, Massachusetts
Mary Marcellus' primary practice is Vantage Healthcare, at 45 Dan Rd, Canton, MA 02021 in Norfolk County. The practice phone is (781) 867-2050.
- Vantage Healthcare45 Dan Rd, Canton, MA 02021 · Norfolk CountyPhone(781) 867-2050
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mary Katherine Marcellus is affiliated with 3 sites of care and 1 medical group
Mary Marcellus' primary practice is Vantage Healthcare in Canton, Massachusetts. The medical group on file is Vantage Healthcare. Dmand AI also links Mary Marcellus to 1 more group practice or clinic and 1 home health agency, 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 Mary Katherine Marcellus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Marcellus practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vantage Healthcare | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Mary Katherine Marcellus is one of 3,644 family nurse practitioners in Massachusetts
Family is Mary Marcellus' primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Mary Marcellus is licensed in Massachusetts.
Specialties and state licenses
- Family nurse practitioner, MassachusettsPrimary
Family nurse practitioners near Mary Marcellus
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
Mary Katherine Marcellus' patients have a median age of 85
Across all payers, Dmand AI patient panel data puts Mary Marcellus' median patient age at 85, with 66% women.
Mary Marcellus' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 85
Patient panel by sex, all payers
- Women66%
- Men34%
Source: Dmand AI Patient Panel Data
How Mary Katherine Marcellus takes part in Medicare
Mary Marcellus 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)
Mary Katherine Marcellus received $27 in industry payments in 2025
CMS Open Payments shows 1 general payment to Mary Marcellus from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Indivior Inc. paid the most, $27.
Companies that paid Mary Marcellus 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 Mary Katherine Marcellus'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 Data |
| 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 Mary Katherine Marcellus
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 Katherine Marcellus' NPI number?
Mary Katherine Marcellus' NPI number is 1700662004. It was assigned on September 4, 2023, and it is active in the NPI Registry.
What does Mary Katherine Marcellus specialize in?
Mary Katherine Marcellus is a family nurse practitioner in Canton, Massachusetts. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Mary Katherine Marcellus practice?
Mary Marcellus practices at 45 Dan Rd, Canton, MA 02021. Mary Marcellus' primary practice is Vantage Healthcare in Canton, Massachusetts. Dmand AI also links Mary Marcellus to 1 group practice or clinic and 1 home health agency.
What is Mary Katherine Marcellus' office phone number?
The practice phone on file for Mary Marcellus is (781) 867-2050.
What is Mary Katherine Marcellus' medical license number?
Mary Marcellus holds Massachusetts license RN2329432.
What medical group is Mary Katherine Marcellus part of?
Mary Marcellus is linked to Vantage Healthcare.
Does Mary Katherine Marcellus accept Medicare?
Yes. CMS lists Mary Marcellus as accepting Medicare assignment.
Has Mary Katherine Marcellus received payments from drug or device companies?
CMS Open Payments shows $27 in general payments to Mary Marcellus from 1 company from 2025 to 2025. The largest total came from Indivior Inc.
How long has Mary Katherine Marcellus been practicing?
Mary Marcellus graduated from medical school in 2022, 4 years ago.
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