Brianne Lynn Johnsen, PA-C
Medical Physician Assistant · Boston, MA
Brianne Lynn Johnsen, PA-C is a medical physician assistant with a practice address in Boston, Massachusetts, and NPI 1275558652, issued on Jul 13, 2006. Check the license (Massachusetts 4181, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Brianne Lynn Johnsen
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License numbers
- 4181 MA
PA00441 RI
1215 TN
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St., Boston, MA 02114
- Phone
- (617) 726-7938
- Enumerated
- Jul 13, 2006
- Record last updated
- Jan 31, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 1275558 RI
- Medicare enrollment
- Enrolled (PECOS I20130703000010); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 886 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eyal Benjamin Ben Assa, MDInternal Medicine Physician1740720937
Verify Brianne Lynn Johnsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 4181Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average medical physician assistant in 2024
748 Medicare Part D claims for 236 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Prednisone165 claims
- Hydroxychloroquine Sulfate91 claims
- Methotrexate86 claims
- Allopurinol50 claims
- Enbrel Sureclick37 claims
- Diclofenac Sodium28 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
- Mass General Brigham Medical Group Northern Massachusetts IncDanvers, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brianne Lynn Johnsen among 886 medical physician assistant records in Massachusetts
Brianne Lynn Johnsen, PA-C is one of 886 medical physician assistant records with a practice address in Massachusetts. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 78% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2003 · median 2015 among the 559 with a school on file
- Record last updated2019 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in Massachusetts
There are 886 medical physician assistant records in Massachusetts.
All 886 in Massachusetts → Every provider in Boston → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- John Ahern, PA-CBoston, MA 021141043682776
- Snehal Berajawala, PACBoston, MA 021141073764874
- Alf Carroll, PA-CBoston, MA 021141427507342
- Jonathan Coveney, PA-CBoston, MA 021141780054411
- Casey Cowan, PA-CBoston, MA 021141790104222
- Gerald DuffyBoston, MA 021141861943367
- Kelley Gillis, PA-CBoston, MA 021141265533137
- Caitlin Kaplan, PHYSICIAN ASSISTANTBoston, MA 021141609313204
Common questions
What is Brianne Lynn Johnsen, PA-C's NPI number?
Brianne Lynn Johnsen, PA-C's National Provider Identifier (NPI) is 1275558652, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brianne Lynn Johnsen, PA-C located?
The NPPES record lists a practice address at 55 Fruit St., Boston, MA, 02114. Phone: (617) 726-7938. Providers update this record themselves, so call before visiting.
How can I verify Brianne Lynn Johnsen, PA-C's license?
NPPES lists Massachusetts license number 4181, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Brianne Lynn Johnsen, PA-C prescribe under Medicare Part D?
In 2024, Brianne Lynn Johnsen, PA-C had 748 Medicare Part D claims for 236 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.