Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Marcus W. Tjia, MD

Individual provider Psychiatry Physician · NPI 1376605089

Dr. Marcus W. Tjia, MD is a Psychiatry in Wellesley, Massachusetts. Graduated from Icahn School of Medicine at Mount Sinai in 2002, 24 years ago. Practices with Atrius Health Inc, a 1,205-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
24
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
MA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

230 Worcester St
Wellesley, MA 02481-5420
Phone: (781) 431-5270
Fax: (781) 431-5535
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 230945 (MA)

Record details

NPI number1376605089
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 16, 2006
Last updated in NPPESMarch 8, 2021
Certification dateMarch 8, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2002 (24 years in practice)
Group practice Atrius Health Inc — 1205 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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