Stefanie Koelewyn, PA-C
Physician Assistant · Bellingham, MA
Stefanie Koelewyn, PA-C is a physician assistant with a practice address in Bellingham, Massachusetts, and NPI 1811617897, issued on Aug 31, 2022. Check the license (Massachusetts PA9081, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stefanie Koelewyn
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA9081 MA
Self-reported in NPPES; status is on the state search - Practice location
- 245 Hartford Ave, Bellingham, MA 02019
- Phone
- (774) 295-4355
- Enumerated
- Aug 31, 2022
- Record last updated
- Nov 16, 2023
- Fax
- (774) 295-4880
- Medicare enrollment
- Enrolled (PECOS I20230412000878); 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 245 Hartford Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kari Demoura, PA-CPhysician Assistant1386254456
- Aldo Gonzales, FNPNurse Practitioner1023954252
- Katherine Hill, FNPFamily Nurse Practitioner1285303081
Verify Stefanie Koelewyn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA9081Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average physician assistant in 2024
209 Medicare Part D claims for 150 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Amoxicillin-Clavulanate Potass37 claims
- Albuterol Sulfate Hfa26 claims
- Cephalexin25 claims
- Azithromycin24 claims
- Doxycycline Hyclate14 claims
- Prednisone13 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 Suburban Massachusetts IncWellesley, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stefanie Koelewyn among 4,713 physician assistant records in Massachusetts
Stefanie Koelewyn, PA-C 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 2022, is newer than 68% of them.
- NPI issued2022 · 68% of these records are older, 25% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2022 · 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).
6 physician assistant records list a practice address in Bellingham
They are 6 of the 143 NPPES records with a practice address in Bellingham, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Bellingham → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Taylor Caparo, PA-CBellingham, MA 020191669066205
- Kari Demoura, PA-CBellingham, MA 020191386254456
- Jamie Jackson, PA-CBellingham, MA 020191942679568
- Corinne Nowak, PA-CBellingham, MA 020191073963500
- Alva TanBellingham, MA 020191851025357
- Alec Beaulieu, PA-CCanton, MA 020211376105049
- Umar Hussaini, PA-CCanton, MA 020211801751433
- Ariel Linehan, PA-CCanton, MA 020211942740592
Common questions
What is Stefanie Koelewyn, PA-C's NPI number?
Stefanie Koelewyn, PA-C's National Provider Identifier (NPI) is 1811617897, issued on Aug 31, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Stefanie Koelewyn, PA-C located?
The NPPES record lists a practice address at 245 Hartford Ave, Bellingham, MA, 02019. Phone: (774) 295-4355. Providers update this record themselves, so call before visiting.
How can I verify Stefanie Koelewyn, PA-C's license?
NPPES lists Massachusetts license number PA9081, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Stefanie Koelewyn, PA-C prescribe under Medicare Part D?
In 2024, Stefanie Koelewyn, PA-C had 209 Medicare Part D claims for 150 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.