Physician Profile
Unclaimed ProfileAbout SCHAFFER
Listed in the NPI registry as a nurse practitioner, Sonja Schaffer practises in Charlton, MA. Sonja graduated from University of Massachusetts Medical School in 2016. Sonja is also listed as specialising in nurse practitioner — family.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Schaffer's specialty?
Dr. Schaffer is a nurse practitioner in Charlton, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “NURSE PRACTITIONER”.
NPI registry
Where can I find Dr. Schaffer?
Dr. 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 Dr. Schaffer?
The number on file is (508) 784-1278. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Schaffer?
Dr. 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 Dr. Schaffer's medical education?
Dr. 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 Dr. Schaffer have?
Dr. Schaffer has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Schaffer known for?
According to Medicare billing data, Dr. 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 Dr. Schaffer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Schaffer. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (508) 784-1278
- Email not available
Practice Locations
9 TROLLEY CROSSING RD
Charlton, MA 01507
Procedures Most Often Billed to Medicare
146 services · 111 patients · 3 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
61 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
49 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
36 |
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 4
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.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.