Roula Johnstone, ACNP-BC
Acute Care Nurse Practitioner · N Chelmsford, MA
Roula Johnstone, ACNP-BC is an acute care nurse practitioner with a practice address in N Chelmsford, Massachusetts, and NPI 1598907271, issued on Mar 27, 2009. Check the license (Massachusetts RN235018, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Roula Johnstone
- Credential
- ACNP-BC
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- RN235018 MA
Self-reported in NPPES; status is on the state search - Practice location
- 20 Research PL, N Chelmsford, MA 01863
- Phone
- (978) 454-0706
- Enumerated
- Mar 27, 2009
- Record last updated
- Feb 13, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20111102000058); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest acute care nurse practitioner records → All 598 in Massachusetts → Look up another NPI →
Also registered at 20 Research PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Judith Bain, NPFamily Nurse Practitioner1609952035
- Michael Bertos, M.D.Internal Medicine Physician1043245145
- Louis Bresnick, M.D.Internal Medicine Physician1205861390
- Jayme Cerullo, NPFamily Nurse Practitioner1689711871
- Kathleen Cullen-Lutter, RN/NMAdvanced Practice Midwife1588096267
- Minerva Domingo, MDSpecialist1639170210
Verify Roula Johnstone in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN235018Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average acute care nurse practitioner in 2024
311 Medicare Part D claims for 213 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. 210 claims were for opioids.
Most prescribed
- Oxycodone Hcl161 claims
- Tramadol Hcl42 claims
- Ondansetron Hcl27 claims
- Gabapentin16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Orthopaedic Surgical Associates OF Lowell, P.C.North Chelmsford, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roula Johnstone among 598 acute care nurse practitioner records in Massachusetts
Roula Johnstone, ACNP-BC is one of 598 acute care nurse practitioner records with a practice address in Massachusetts. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 23% of them.
- NPI issued2009 · 23% of these records are older, 72% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2011 · median 2016 among the 341 with a school on file
- Record last updated2015 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 acute care nurse practitioner record lists a practice address in N Chelmsford
They are 1 of the 66 NPPES records with a practice address in N Chelmsford, and 598 acute care nurse practitioner records in Massachusetts.
All 598 in Massachusetts → Every provider in N Chelmsford → Acute Care Nurse Practitioner nationwide →
The 8 acute care nurse practitioner records with the nearest ZIP codes
- Alexis CasimirLowell, MA 018541083221659
- Melissa Cullingford, N.P.Lowell, MA 018541982014676
- Catherine Scott, NPLowell, MA 018541407730260
- Elizabeth Dougherty, NPTewksbury, MA 018761841310364
- Pascaline Kum, NPLowell, MA 018501376422451
- Laurice Canning, ACNP-BCNorth Andover, MA 018451639450141
- Jill Francisco, NPNorth Andover, MA 018451851726970
- Zacharia Matar, AGACNP-BCLawrence, MA 018411740988328
Common questions
What is Roula Johnstone, ACNP-BC's NPI number?
Roula Johnstone, ACNP-BC's National Provider Identifier (NPI) is 1598907271, issued on Mar 27, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Roula Johnstone, ACNP-BC located?
The NPPES record lists a practice address at 20 Research PL, N Chelmsford, MA, 01863. Phone: (978) 454-0706. Providers update this record themselves, so call before visiting.
How can I verify Roula Johnstone, ACNP-BC's license?
NPPES lists Massachusetts license number RN235018, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Roula Johnstone, ACNP-BC prescribe under Medicare Part D?
In 2024, Roula Johnstone, ACNP-BC had 311 Medicare Part D claims for 213 beneficiaries; the average among acute care nurse practitioner prescribers was 594. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.