Stefanie Koelewyn, PA-C
NPI 1811617897 · Physician Assistant · Bellingham, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stefanie Koelewyn, PA-C is a Physician Assistant provider in Bellingham, MA (NPI 1811617897).
Provider details
- NPI number
- 1811617897
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA9081 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
3 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
195 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 71 | $154 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 26 | $118 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 25 | $103 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 25 | $152 |
| Automated Urinalysis Test81003 | 21 | $2 |
| Respiratory Infectious Agent Detection By Rna for Severe Acute Respiratory Syndrome Coronavirus 2 (covid 19), Influenza A, Influenza B, and Respiratory Syncytial Virus, Upper Respiratory Specimen, Each Reported As Detected Or Not Detected |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 37 | 35 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 26 | 25 |
| Cephalexin | 25 | 25 |
| Azithromycin | 24 | 24 |
| Doxycycline Hyclate | 14 | 14 |
| Prednisone | 13 | 13 |
| Ofloxacin | 11 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-08-31
- Last updated
- 2023-11-16
- Certified
- 2023-11-16
Frequently asked questions
- What is Stefanie Koelewyn's NPI number?
- Stefanie Koelewyn's National Provider Identifier (NPI) is 1811617897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stefanie Koelewyn's specialty?
- Stefanie Koelewyn is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stefanie Koelewyn located?
- Stefanie Koelewyn's practice location on file with NPPES is 245 Hartford Ave, Bellingham, MA 02019-3007.
- What is Stefanie Koelewyn's phone number?
- The practice phone number listed in the NPPES registry for Stefanie Koelewyn is (774) 295-4355.
- Does Stefanie Koelewyn accept Medicare?
- Stefanie Koelewyn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stefanie Koelewyn's NPI active?
- Yes — Stefanie Koelewyn's NPI (1811617897) is active in the NPPES registry as of the last update on 2023-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.