Doctor profile · Federal record
Dr. Simon M. W. Lejeune, M.D.
Psychiatry Physician (CMS: Psychiatry) · Cambridge, MA
- NPI 1821035403
- Accepts Medicare
- MIPS 81.3 / 100 · 2023
- 41 yrs in practice
- Male
- No sanctions
Practice & contact
- Primary practice
-
77 Mass Ave E23, Mit Medical Center
Cambridge, MA 02139
(617) 253-2916 - Mailing address
-
74 Beals St, Apt. #2
Brookline, MA 024466011
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 2084P0800X — NUCC code
- State license (1)
- Massachusetts #56687
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1821035403. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
77
Distinct HCPCS
2
Medicare allowed
$7,331
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 57 | 17 | $104 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 20 | 13 | $70 |
In context: peer comparison
Among 21 peers in Cambridge Psychiatry Physician, average services per provider: 118. This provider delivers 0.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
879
Patients
49
Total drug cost
$17,754
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Clonidine Hcl | Generic | 91 | 11 | $1,263 |
| Clonazepam | Generic | 85 | 16 | $960 |
| Gabapentin | Generic | 78 | 11 | $1,302 |
| Risperidone | Generic | 71 | 0 | $1,736 |
| Sertraline Hcl | Generic | 66 | 0 | $780 |
| Lithium Carbonate ER (Lithium Carbonate) | Brand | 63 | 0 | $1,002 |
| Lorazepam | Generic | 63 | 11 | $416 |
| Duloxetine Hcl | Generic | 57 | 0 | $2,061 |
| Clozapine | Generic | 55 | 0 | $1,817 |
| Alprazolam | Generic | 46 | 0 | $792 |
Frequently asked questions
What is Dr. Simon M. W. Lejeune's medical specialty?
Dr. Simon M. W. Lejeune practices Psychiatry Physician in Cambridge, MA.
Where does Dr. Simon M. W. Lejeune practice?
Dr. Simon M. W. Lejeune practices at 77 Mass Ave E23, Cambridge, MA 02139. Office phone: 6172532916.
What is Dr. Simon M. W. Lejeune's NPI?
Dr. Simon M. W. Lejeune's National Provider Identifier (NPI) is 1821035403, issued by NPPES.
Does Dr. Simon M. W. Lejeune accept Medicare assignment?
Yes. Dr. Simon M. W. Lejeune accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Simon M. W. Lejeune commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.