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Edit this profileAt a glance
- 230 Worcester St, Wellesley, MA 02481
About Dr. Tjia
Marcus W. Tjia, MD practices psychiatry in Wellesley, MA. Marcus is a 2002 graduate of Icahn School of Medicine at Mount Sinai. Medicare claims data shows Marcus provided 1,156 services to 526 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, psychotherapy with evaluation and management visit, 30 minutes, and visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient'. The provider's National Provider Identifier (NPI) is 1376605089.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (781) 431-5270
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
230 WORCESTER ST
Wellesley, MA 02481
Conditions Commonly Evaluated or Treated
Within Psychiatry generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Cognitive and adjustment
Eating, sleep, and somatic
Geriatric care
Mental Health
Neurodevelopmental and behavioral
Most searched conditions
Anxiety, trauma, and obsessive-compulsive
Mood disorders
Psychotic disorders
Substance-related and addictive
Addiction & Substance Use
Eating Disorders
Mood & Depression
Personality and dissociative
Sleep & Wakefulness
Procedures & services
Advanced treatment
Assessment
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Addiction care
Addiction Medicine
Assessments
- Adult ADHD Testing
- Autism testing
- Cognitive Assessment
Brain stimulation
Consultations
Diagnostics
Inpatient care
Interventional psychiatry
Psychotherapy
Sleep Medicine
Specialized care
Therapy
Therapy and care
Procedures Most Often Billed to Medicare
1,156 services · 526 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
31 | As often as other peers in Psychiatry |
| Psychotherapy with evaluation and management visit, 30 minutes | Treatment | 90833 |
319 | More often than most peers in Psychiatry |
| Psychotherapy, 30 minutes | Treatment | 90832 |
17 | Less often than most peers in Psychiatry |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
537 | More than most peers in Psychiatry |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
155 | More often than most peers in Psychiatry |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
58 | As often as other peers in Psychiatry |
| Telephone medical discussion with physician, 5-10 minutes | Office visit | 99441 |
15 | Less often than most peers in Psychiatry |
| Blood test, lipids (cholesterol and triglycerides) | Lab test | 80061 |
13 | Too few peers to compare |
| Hemoglobin a1c level | Lab test | 83036 |
11 | Too few peers to compare |
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 4
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 psychiatrists in Wellesley 8
Same specialty, same city.
More connections — 19 related providers in 3 groups
Trained at Icahn School of Medicine at Mount Sinai 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at Icahn School of Medicine at Mount Sinai 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 3
Providers in MA who bill this service to Medicare most often.
Common questions
What is Dr. Tjia's specialty?
Dr. Tjia is a psychiatrist in Wellesley, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
Where can I find Dr. Tjia?
Dr. Tjia is listed at 230 Worcester St, Wellesley, MA 02481. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Tjia?
The number on file is (781) 431-5270. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Tjia?
Dr. Tjia's National Provider Identifier is 1376605089. 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. Tjia's medical education?
Dr. Tjia attended Icahn School of Medicine at Mount Sinai, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Tjia have?
Dr. Tjia has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Tjia known for?
According to Medicare billing data, Dr. Tjia performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as psychotherapy with evaluation and management visit, 30 minutes and psychotherapy, 30 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Tjia's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Tjia. If this is you, claiming it is free.
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