Doctor profile · Federal record
Dr. Marcus Tjia, MD
Psychiatry Physician (CMS: Psychiatry) · Wellesley, MA
- NPI 1376605089
- Accepts Medicare
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
230 Worcester St
Wellesley, MA 024815420
(781) 431-5270
fax (781) 431-5535
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- March 8, 2021
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 2084P0800X — NUCC code
- State license (1)
- Massachusetts #230945
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1376605089. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,000
Distinct HCPCS
7
Medicare allowed
$112,341
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 502 | 168 | $138 | |
90833 |
Psychotherapy with evaluation and management visit, 30 minutes | 268 | 102 | $73 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 136 | 50 | $100 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 34 | 19 | $63 | |
90792 |
Psychiatric diagnostic evaluation with medical services | 29 | 29 | $209 | |
36415 |
Insertion of needle into vein for collection of blood sample | 18 | 14 | $8 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 13 | 12 | $98 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 185. This provider delivers 5.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
3,191
Patients
703
Total drug cost
$79,224
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Lorazepam | Generic | 361 | 81 | $2,159 |
| Trazodone Hcl | Generic | 350 | 92 | $7,394 |
| Clonazepam | Generic | 290 | 56 | $2,604 |
| Duloxetine Hcl | Generic | 256 | 55 | $10,852 |
| Sertraline Hcl | Generic | 256 | 70 | $4,308 |
| Lamotrigine | Generic | 236 | 44 | $5,093 |
| Venlafaxine Hcl Er (Venlafaxine Hcl) | Brand | 204 | 36 | $6,601 |
| Mirtazapine | Generic | 186 | 39 | $4,571 |
| Fluoxetine Hcl | Generic | 185 | 41 | $2,569 |
| Bupropion Xl (Bupropion Hcl) | Brand | 179 | 52 | $7,514 |
Frequently asked questions
What is Dr. Marcus Tjia's medical specialty?
Dr. Marcus Tjia practices Psychiatry Physician in Wellesley, MA.
Where does Dr. Marcus Tjia practice?
Dr. Marcus Tjia practices at 230 Worcester St, Wellesley, MA 024815420. Office phone: 7814315270.
What is Dr. Marcus Tjia's NPI?
Dr. Marcus Tjia's National Provider Identifier (NPI) is 1376605089, issued by NPPES.
Does Dr. Marcus Tjia accept Medicare assignment?
Yes. Dr. Marcus Tjia accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marcus Tjia commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Psychotherapy with evaluation and management visit (HCPCS 90833); Telephone medical discussion with physician (HCPCS 99442). Source: CMS Medicare Physician & Other Practitioners file.