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

Roula Johnstone, ACNP-BC

Individual provider Acute Care Nurse Practitioner · NPI 1598907271

Roula Johnstone, ACNP-BC is a Nurse Practitioner in N Chelmsford, Massachusetts. Qualified in 2011, 15 years ago. Practices with Orthopaedic Surgical Associates of Lowell, PC, a 43-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
15
Licensed in
MA
In the registry since
2009

Practice location Address checks out

20 Research Pl
N Chelmsford, MA 01863-2454
Phone: (978) 454-0706
Show map & directions

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

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence RN235018 (MA)

Record details

NPI number1598907271
Entity typeIndividual (Type 1)
GenderFemale
Credentials ACNP-BC
Sole proprietorNo
NPI enumeratedMarch 27, 2009
Last updated in NPPESFebruary 13, 2015

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Orthopaedic Surgical Associates Of Lowell, P.C. — 43 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount