ROULA JOHNSTONE ACNP-BC
NPI 1598907271
Nurse Practitioner - Acute Care in N Chelmsford, MA

Active since March 27, 2009PECOS EnrolledAccepts Medicare Assignment
20 RESEARCH PL, N CHELMSFORD, MA 01863(978) 454-0706 Get Directions Write a Review

NPPES record last updated: February 13, 2015. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Roula Johnstone Acnp-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROULA JOHNSTONE ACNP-BC (NPI 1598907271) is an individual acute care provider in N Chelmsford, Massachusetts, licensed in Massachusetts (RN235018) and active in the NPI registry since March 2009. She is enrolled in Medicare PECOS, is affiliated with Lowell General Hospital, and is a graduate of Other (2011).

NPPES Registry Identity

NPI1598907271
Entity TypeIndividualFemale
Primary Taxonomy363LA2100X
Provider Legal NameROULA JOHNSTONECredential: ACNP-BC
Location Address20 RESEARCH PLN Chelmsford, MA 01863-2454
Mailing Address14 Research PlNorth Chelmsford, MA 01863-2412
Sole ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateMarch 27, 2009
Last NPPES UpdateFebruary 13, 2015
NPI 1598907271 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2100X
License Licensed in MA · RN235018
20 RESEARCH PL, N Chelmsford, MA 01863

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Roula Johnstone Acnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3375716657
PECOS Enrollment IDI20111102000058
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Prosthetic repair of shoulder joint, total shoulder 23472
Total shoulder prosthetic repair is a surgical procedure to replace a damaged shoulder joint with artificial components. It aims to relieve pain and restore mobility. The procedure involves replacing the ball (humeral head) and socket (glenoid) of the shoulder joint.
14 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Lowell General Hospital

Acute Care Hospitals · Lowell, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220063
Location295 Varnum AvenueLowell, MA 01854 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01863 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Specialist
20 RESEARCH PL, SUITE 300
NORTH CHELMSFORD, MA 01863
Internal Medicine
20 RESEARCH PL, SUITE 310
N CHELMSFORD, MA 01863
Pediatrics
20 RESEARCH PL, 200
N CHELMSFORD, MA 01863
Internal Medicine
20 RESEARCH PL, SUITE 130
NORTH CHELMSFORD, MA 01863
Internal Medicine
20 RESEARCH PL, SUITE 310
N CHELMSFORD, MA 01863
Nurse Practitioner (Obstetrics & Gynecology)
20 RESEARCH PL, SUITE 300
N CHELMSFORD, MA 01863
Physical Therapist
20 RESEARCH PL, SUITE 220
NORTH CHELMSFORD, MA 01863
Specialist
20 RESEARCH PL, SUITE 320
NORTH CHELMSFORD, MA 01863

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Roula Johnstone's NPI number?

The NPI number for Roula Johnstone is 1598907271. It was assigned to this individual provider in the NPPES registry on March 27, 2009.

Where is Roula Johnstone located?

Roula Johnstone practices at 20 Research Pl, N Chelmsford, MA 01863. The listed phone number is (978) 454-0706.

What is Roula Johnstone's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.

Is Roula Johnstone enrolled in Medicare?

Yes. Roula Johnstone is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Roula Johnstone accept?

Health plans from Anthem Blue Cross and Blue Shield list Roula Johnstone as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Roula Johnstone affiliated with any hospitals?

According to CMS data, Roula Johnstone is affiliated with Lowell General Hospital.

When was this NPI record last updated?

The NPPES record for Roula Johnstone was last updated on February 13, 2015. NPI Profile syncs with the weekly NPPES data releases published by CMS.