Rangsun Sitthichai, M.D.
Child & Adolescent Psychiatry Physician · Worcester, MA
Rangsun Sitthichai, M.D. is a child & adolescent psychiatry physician with a practice address in Worcester, Massachusetts, and NPI 1427259712, issued on May 31, 2007. Check the license (Massachusetts 245861, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Rangsun Sitthichai
- Credential
- M.D.
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- 245861 MA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Century Dr, Worcester, MA 01606
- Phone
- (774) 442-2263
- Enumerated
- May 31, 2007
- Entity
- Type 1 · individual
Also registered at 100 Century Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arun Abraham, MDStudent in an Organized Health Care Education/Training Program1417897414
- Bhavana Aitha, DOStudent in an Organized Health Care Education/Training Program1679323414
- Jason Alan, PSY.D.Clinical Psychologist1922742469
- Caroline Alper, M.D.Internal Medicine Physician1134228992
- Melissa Anderson, PH.D.Clinical Psychologist1043559099
- Kathryn Andersson, CNPPsychiatric/Mental Health Nurse Practitioner1811629843
Verify Rangsun Sitthichai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 245861Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3.2 times the Medicare Part D claims of the average child & adolescent psychiatry physician in 2024
1,614 Medicare Part D claims for 101 beneficiaries, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Risperidone111 claims
- Fluoxetine Hcl97 claims
- Trazodone Hcl94 claims
- Bupropion Xl90 claims
- Clonazepam86 claims
- Sertraline Hcl82 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Community Healthlink IncWorcester, MA
- President And Fellows OF Harvard CollegeCambridge, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Child & Adolescent Psychiatry Physician providers in Massachusetts
There are 336 child & adolescent psychiatry physician records in Massachusetts.
Other child & adolescent psychiatry physician records in Massachusetts
- Patricia Abbott, MDWestwood, MA1417001686
- Annah Abrams, MDBoston, MA1689665234
- Ashley Adams, MDBoston, MA1790342053
- David Adams, MDBoston, MA1942752993
- Peter Adams, M.D.Newton, MA1710138011
- Solomon Adelsky, M.D.Cambridge, MA1023350931
- David Agger, LICSWFalmouth, MA1588764633
- Blaise Aguirre, MDBelmont, MA1619936846
- Ireen Ahmed, MDBoston, MA1548674807
- Mary Ahn, M.D.Boston, MA1952429532
Common questions
What is Rangsun Sitthichai, M.D.'s NPI number?
Rangsun Sitthichai, M.D.'s National Provider Identifier (NPI) is 1427259712, issued on May 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Rangsun Sitthichai, M.D. located?
The NPPES record lists a practice address at 100 Century Dr, Worcester, MA, 01606. Phone: (774) 442-2263. Providers update this record themselves, so call before visiting.
How can I verify Rangsun Sitthichai, M.D.'s license?
NPPES lists Massachusetts license number 245861, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Rangsun Sitthichai, M.D. prescribe under Medicare Part D?
In 2024, Rangsun Sitthichai, M.D. had 1,614 Medicare Part D claims for 101 beneficiaries; the average among child & adolescent psychiatry physician prescribers was 504. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments, the HHS-OIG exclusion list) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.