Doctor profile · Federal record
Dr. Claes Nilsson, MD
Internal Medicine Physician (CMS: Internal Medicine) · Dedham, MA
- NPI 1912006065
- Accepts Medicare
- 53 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
990 Washington St, Suite 203
Dedham, MA 020266714
(413) 543-6820
fax (781) 326-1384 - Mailing address
-
819 Worcester St, Ste 3
Springfield, MA 011511045
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- October 19, 2022
- Year of graduation
- 1973 — 53 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Massachusetts #53091
- Medicaid
- MA #110045324/A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912006065. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,000
Distinct HCPCS
7
Medicare allowed
$96,634
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99348 |
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes | 412 | 152 | $81 | |
99308 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 230 | 104 | $80 | |
99349 |
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | 206 | 84 | $135 | |
99309 |
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 84 | 45 | $114 | |
99347 |
Residence visit for established patient with straightforward medical decision making, per day, if using time, at least 15 minutes | 37 | 31 | $47 | |
99306 |
Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 19 | 19 | $194 | |
99350 |
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes | 12 | 12 | $195 |
In context: peer comparison
Among 9 peers in this city , average services per provider: 93. This provider delivers 11× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,450
Patients
72
Total drug cost
$58,454
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Lisinopril | Generic | 310 | 17 | $1,572 |
| Atorvastatin Calcium | Generic | 293 | 15 | $1,973 |
| Gabapentin | Generic | 217 | 13 | $1,502 |
| Metoprolol Succinate | Generic | 203 | 16 | $2,282 |
| Sertraline Hcl | Generic | 183 | 0 | $1,130 |
| Eliquis (Apixaban) | Brand | 166 | 11 | $41,824 |
| Allopurinol | Generic | 161 | 0 | $1,325 |
| Mirtazapine | Generic | 155 | 0 | $1,682 |
| Levothyroxine Sodium | Generic | 136 | 0 | $1,133 |
| Furosemide | Generic | 132 | 0 | $1,180 |
Frequently asked questions
What is Dr. Claes Nilsson's medical specialty?
Dr. Claes Nilsson practices Internal Medicine Physician in Dedham, MA.
Where does Dr. Claes Nilsson practice?
Dr. Claes Nilsson practices at 990 Washington St, Dedham, MA 020266714. Office phone: 4135436820.
What is Dr. Claes Nilsson's NPI?
Dr. Claes Nilsson's National Provider Identifier (NPI) is 1912006065, issued by NPPES.
Does Dr. Claes Nilsson accept Medicare assignment?
Yes. Dr. Claes Nilsson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Claes Nilsson commonly perform?
Top Medicare-reported procedures in 2023: Residence visit for established patient with low level of medical decision making (HCPCS 99348); Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308); Residence visit for established patient with moderate level of medical decision making (HCPCS 99349). Source: CMS Medicare Physician & Other Practitioners file.