Are you Sonja Schaffer? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileWhere to find Sonja Schaffer
- Charlton location main office
9 Trolley Crossing Rd, Charlton, MA 01507 - Sturbridge location
128 Main St, Sturbridge, MA 01566
About Sonja Schaffer
Listed in the NPI registry as a nurse practitioner, Sonja Schaffer practices in Charlton, MA. Sonja graduated from University of Massachusetts Medical School in 2016. Sonja is also listed as specializing in nurse practitioner — family. Medicare claims data shows Sonja provided 146 services to 111 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit. NPI 1336694439 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (508) 784-1278
- Email not available
Practice Locations
9 TROLLEY CROSSING RD
Charlton, MA 01507
128 Main St
Sturbridge, MA 01566
Procedures Most Often Billed to Medicare
146 services · 111 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
61 | As often as other peers in Nurse Practitioner |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
49 | As often as other peers in Nurse Practitioner |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
36 | As often as other peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other nurse practitioners in Charlton 8
Same specialty, same city.
More connections — 15 related providers in 2 groups
Trained at University of Massachusetts Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 2016 at University of Massachusetts Medical School 7
Providers who graduated from the same medical school in the same year.
Common questions
What is Sonja Schaffer's specialty?
Sonja Schaffer is a nurse practitioner in Charlton, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Sonja Schaffer?
Sonja Schaffer is listed at 9 Trolley Crossing Rd, Charlton, MA 01507. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Sonja Schaffer?
The number on file is (508) 784-1278. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Sonja Schaffer?
Sonja Schaffer's National Provider Identifier is 1336694439. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Sonja Schaffer's education?
Sonja Schaffer attended University of Massachusetts Medical School, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Sonja Schaffer have?
Sonja Schaffer has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What is Sonja Schaffer known for?
According to Medicare billing data, Sonja Schaffer the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Sonja Schaffer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Sonja Schaffer. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.