Arissa Opalacz
Physician Assistant · Boston, MA
Arissa Opalacz is a physician assistant with a practice address in Boston, Massachusetts, and NPI 1396410700, issued on Aug 9, 2021. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Arissa Opalacz
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 45 Francis St, Boston, MA 02115
- Phone
- (617) 732-6389
- Enumerated
- Aug 9, 2021
- Record last updated
- Jun 22, 2023
- Medicare enrollment
- Enrolled (PECOS I20220125000935); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 45 Francis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Acker, LCSWClinical Social Worker1417876392
- Martin Aguilar, MDStudent in an Organized Health Care Education/Training Program1356835508
- Victoria Aharon, PA-CPhysician Assistant1508109398
- Lama Alabdulaaly, BDSOral and Maxillofacial Pathology Dentistry1578075248
- Saif Alenizi, M.D., M.P.H.Nephrology Physician1255680997
- Roberta (bobbi) Allison, MA, MSW, LICSWClinical Social Worker1649407248
Verify Arissa Opalacz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average physician assistant in 2024
835 Medicare Part D claims for 268 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole194 claims
- Famotidine150 claims
- Pantoprazole Sodium64 claims
- Linzess46 claims
- Esomeprazole Magnesium42 claims
- Dicyclomine Hcl38 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
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Arissa Opalacz among 4,713 physician assistant records in Massachusetts
Arissa Opalacz is one of 4,713 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 2021, is newer than 63% of them.
- NPI issued2021 · 63% of these records are older, 32% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2021 · median 2019 among the 3,217 with a school on file
- Record last updated2023 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,660 physician assistant records list a practice address in Boston
They are 1,660 of the 41,865 NPPES records with a practice address in Boston, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Boston → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lara BenoBoston, MA 021151013982677
- Laura BondlowBoston, MA 021151003806571
- Kristin Boyt, PABoston, MA 021151225091358
- Jessica Britnell, MS, PA-CBoston, MA 021151255309183
- Kendra Church, MS PA CBoston, MA 021151043261381
- Michele Elms, PABoston, MA 021151821052671
- Andrea Gayle-Bennett, PABoston, MA 021151497728026
- Sherri Horonjeff, PABoston, MA 021151669444394
Common questions
What is Arissa Opalacz's NPI number?
Arissa Opalacz's National Provider Identifier (NPI) is 1396410700, issued on Aug 9, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Arissa Opalacz located?
The NPPES record lists a practice address at 45 Francis St, Boston, MA, 02115. Phone: (617) 732-6389. Providers update this record themselves, so call before visiting.
How can I verify Arissa Opalacz's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Arissa Opalacz prescribe under Medicare Part D?
In 2024, Arissa Opalacz had 835 Medicare Part D claims for 268 beneficiaries; the average among physician assistant prescribers was 830. 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.