Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Marissa Nicole Greco Lowrie, FNP

Individual provider Family Nurse Practitioner · NPI 1801382825

Marissa Nicole Greco Lowrie, FNP is a Nurse Practitioner in Darien, Connecticut. Qualified in 2017, 9 years ago. Practices with Hhc One Medical, LLC, a 7-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Connecticut and New York.

Years since qualifying
9
Licensed in
CT, NY
In the registry since
2018
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

104 Heights Rd
Darien, CT 06820-4119
Phone: (888) 663-6331
Fax: (415) 252-7176
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 800 Howard Ave Fl 1, New Haven, CT 06519-1369 — (203) 785-7411
  • 7517 Metropolitan Ave, Middle Village, NY 11379-2638 — (718) 326-0400

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 9487 (CT)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 343256 (NY)

Record details

NPI number1801382825
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedJuly 2, 2018
Last updated in NPPESMarch 17, 2025
Certification dateMarch 17, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Hhc One Medical, Llc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients158
Services billed 309 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Hhc One Medical, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Darien