Alexandra Terwilliger, FNP
Family Nurse Practitioner · Leominster, MA
Alexandra Terwilliger, FNP is a family nurse practitioner with a practice address in Leominster, Massachusetts, and NPI 1700653888, issued on Dec 7, 2023. Check the license (Massachusetts RN2363089, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alexandra Terwilliger
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- RN2363089 MA
Self-reported in NPPES; status is on the state search - Practice location
- 20 Commercial RD Ste 2, Leominster, MA 01453
- Phone
- (978) 798-6896
- Enumerated
- Dec 7, 2023
- Record last updated
- Sep 16, 2024
- Fax
- (978) 798-6897
- Medicare enrollment
- Enrolled (PECOS I20240226000955); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 20 Commercial RD Ste 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Laura Gleason, FNP-BCFamily Nurse Practitioner1851905186
- Grace Jenkins, PA-CPhysician Assistant1255020616
- Marie Szczesny, NP-CFamily Nurse Practitioner1780018218
- Samantha TepperPhysician Assistant1659100733
- Julie Tucker, FNP-BCFamily Nurse Practitioner1326573387
Verify Alexandra Terwilliger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2363089Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family nurse practitioner in 2024
97 Medicare Part D claims for 64 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
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 2 group practices
- Hkd Outreach PCMattapan, MA
- Revere Medical OF Massachusetts PCLunenburg, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexandra Terwilliger among 4,724 family nurse practitioner records in Massachusetts
Alexandra Terwilliger, FNP is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 79% of them.
- NPI issued2023 · 79% of these records are older, 14% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2023 · median 2019 among the 2,704 with a school on file
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 family nurse practitioner records list a practice address in Leominster
They are 46 of the 1,151 NPPES records with a practice address in Leominster, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Leominster → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Linda Brisebois, NPLeominster, MA 014531467666107
- Danane Chhor, FNP-BCLeominster, MA 014531124469499
- Pamela Demar, FNP-BCLeominster, MA 014531124358916
- Jonathan Goguen, FNPLeominster, MA 014531932467453
- Samantha Good, R.N/N.PLeominster, MA 014531417386681
- Steven Gutwillig, ARNPLeominster, MA 014531003886540
- Lauren Katz, FNPLeominster, MA 014531619247855
- Margaret Papanastassiou, N.P.Leominster, MA 014531437361086
Common questions
What is Alexandra Terwilliger, FNP's NPI number?
Alexandra Terwilliger, FNP's National Provider Identifier (NPI) is 1700653888, issued on Dec 7, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Alexandra Terwilliger, FNP located?
The NPPES record lists a practice address at 20 Commercial RD Ste 2, Leominster, MA, 01453. Phone: (978) 798-6896. Providers update this record themselves, so call before visiting.
How can I verify Alexandra Terwilliger, FNP's license?
NPPES lists Massachusetts license number RN2363089, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Alexandra Terwilliger, FNP prescribe under Medicare Part D?
In 2024, Alexandra Terwilliger, FNP had 97 Medicare Part D claims for 64 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.