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

Marissa F Kleffman Underwood, ARNP

Individual provider Family Nurse Practitioner · NPI 1144691528

Marissa F Kleffman Underwood, ARNP is a Nurse Practitioner in Greenville, North Carolina. Qualified in 2015, 11 years ago. Practices with East Carolina University, a 498-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Florida and North Carolina.

Years since qualifying
11
Licensed in
FL, NC
In the registry since
2015
Specialties on file
3
What do these letters mean?
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.

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Practice location Address checks out

1204 E Fire Tower Rd
Greenville, NC 27858-4196
Phone: (252) 744-1122
Fax: (252) 744-1133
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 4500 San Pablo Rd S, Jacksonville, FL 32224-1865 — (904) 953-2000
  • 381 Ruin Creek Rd, Henderson, NC 27536-2932 — (252) 430-0666

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 264412 (NC)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 5008128 (NC)
Nurse Practitioner Taxonomy 363L00000X · Licence ARNP9467370 (FL)

Record details

NPI number1144691528
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorNo
NPI enumeratedOctober 12, 2015
Last updated in NPPESFebruary 16, 2024
Certification dateFebruary 16, 2024

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice East Carolina University — 498 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Greenville