Eileen Regan
Adult Health Nurse Practitioner · Boston, MA
Eileen Regan is an adult health nurse practitioner with a practice address in Boston, Massachusetts, and NPI 1073912291, issued on Aug 14, 2014. Check the license (Massachusetts 133647, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Eileen Regan
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- 133647 MA
Self-reported in NPPES; status is on the state search - Practice location
- 450 Brookline Ave, Boston, MA 02215
- Phone
- (617) 632-3898
- Enumerated
- Aug 14, 2014
- Record last updated
- Aug 14, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 1,465 in Massachusetts → Look up another NPI →
Also registered at 450 Brookline Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gregory Abel, MDHematology & Oncology Physician1285611954
- Lara Abousamra, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1851183404
- Karley Adams, PAPhysician Assistant1578261764
- Lauren Adams, PA-CPhysician Assistant1902763469
- Ana Aguilar-Bonilla, M.D.Pediatric Hematology & Oncology Physician1023319761
- Andrew Aguirre, MD, PHDMedical Oncology Physician1609071208
Verify Eileen Regan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 133647Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
686 Medicare Part D claims for 187 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Acyclovir92 claims
- Sulfamethoxazole-Trimethoprim45 claims
- Eliquis35 claims
- Omeprazole35 claims
- Gabapentin29 claims
- Dexamethasone25 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.
Eileen Regan among 1,465 adult health nurse practitioner records in Massachusetts
Eileen Regan is one of 1,465 adult health nurse practitioner records with a practice address in Massachusetts. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 76% of them.
- NPI issued2014 · 76% of these records are older, 20% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2014 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
454 adult health nurse practitioner records list a practice address in Boston
They are 454 of the 41,865 NPPES records with a practice address in Boston, and 1,465 adult health nurse practitioner records in Massachusetts.
All 1,465 in Massachusetts → Every provider in Boston → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Diane Dinobile, NPBoston, MA 022151811935745
- Lisa Doherty, APRN, BCBoston, MA 022151497700652
- Lisa Dumouchel, APRNBoston, MA 022151013960699
- M Kaufman, NPBoston, MA 022151174578355
- Leah McKinnon-Howe, APRN, BC, NPBoston, MA 022151790728889
- Kathleen Rourke, RNPBoston, MA 022151548286834
- Virginia Seery, NPBoston, MA 022151316970478
- Sharon Siwiec, NPBoston, MA 022151548226731
Common questions
What is Eileen Regan's NPI number?
Eileen Regan's National Provider Identifier (NPI) is 1073912291, issued on Aug 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Eileen Regan located?
The NPPES record lists a practice address at 450 Brookline Ave, Boston, MA, 02215. Phone: (617) 632-3898. Providers update this record themselves, so call before visiting.
How can I verify Eileen Regan's license?
NPPES lists Massachusetts license number 133647, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Eileen Regan prescribe under Medicare Part D?
In 2024, Eileen Regan had 686 Medicare Part D claims for 187 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.