Doctor profile · Federal record
Dr. Sonja Schaffer
Family Nurse Practitioner (CMS: Nurse Practitioner) · Charlton, MA
- NPI 1336694439
- Accepts Medicare
- 10 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
9 Trolley Crossing RD
Charlton, MA 015071351
(508) 784-1278
fax (508) 784-1279 - Additional location
-
128 Main St
Sturbridge, MA 015661556
(508) 347-9240
Credentials & registration
- NPI registered
- August 2016 — 10 yrs on file
- Profile last updated
- May 7, 2018
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State license (1)
- Massachusetts #RN2289480
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336694439. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
151
Distinct HCPCS
5
Medicare allowed
$17,514
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 79 | 47 | $111 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 27 | 27 | $112 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 17 | 14 | $77 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 14 | 14 | $282 | |
G0009 |
Administration of pneumococcal vaccine | 14 | 14 | $34 |
In context: peer comparison
Among 3 peers in Charlton Family Nurse Practitioner, average services per provider: 156. This provider delivers 1.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,051
Patients
334
Total drug cost
$71,985
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 214 | 75 | $5,143 |
| Lisinopril | Generic | 133 | 55 | $1,366 |
| Levothyroxine Sodium | Generic | 95 | 35 | $1,777 |
| Amlodipine Besylate | Generic | 72 | 30 | $443 |
| Gabapentin | Generic | 72 | 15 | $2,023 |
| Omeprazole | Generic | 56 | 20 | $1,384 |
| Losartan Potassium | Generic | 55 | 21 | $939 |
| Hydrochlorothiazide | Generic | 51 | 13 | $419 |
| Trazodone Hcl | Generic | 51 | 16 | $854 |
| Lorazepam | Generic | 48 | 0 | $325 |
Frequently asked questions
What is Dr. Sonja Schaffer's medical specialty?
Dr. Sonja Schaffer practices Family Nurse Practitioner in Charlton, MA.
Where does Dr. Sonja Schaffer practice?
Dr. Sonja Schaffer practices at 9 Trolley Crossing RD, Charlton, MA 015071351. Office phone: 5087841278.
What is Dr. Sonja Schaffer's NPI?
Dr. Sonja Schaffer's National Provider Identifier (NPI) is 1336694439, issued by NPPES.
Does Dr. Sonja Schaffer accept Medicare assignment?
Yes. Dr. Sonja Schaffer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sonja Schaffer commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.