Rangsun Sitthichai, M.D.
NPI 1427259712 · Child & Adolescent Psychiatry Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rangsun Sitthichai, M.D. is a Child & Adolescent Psychiatry Physician provider in Worcester, MA (NPI 1427259712).
Provider details
- NPI number
- 1427259712
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 245861 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
202 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 134 | $127 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $90 |
| Psychotherapy, 45 Minutes90834 | 27 | $103 |
Typical Medicare-allowed amounts for these services range $90–$127 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Risperidone | 111 | 16 |
| Fluoxetine Hcl | 97 | 16 |
| Trazodone Hcl | 94 | 14 |
| Bupropion Hclbrand: Bupropion Xl | 90 | 14 |
| Clonazepam | 86 | 12 |
| Sertraline Hcl | 82 | 18 |
| Benztropine Mesylate | 75 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-31
- Last updated
- 2023-04-12
- Certified
- 2023-04-12
Frequently asked questions
- What is Rangsun Sitthichai's NPI number?
- Rangsun Sitthichai's National Provider Identifier (NPI) is 1427259712, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rangsun Sitthichai's specialty?
- Rangsun Sitthichai is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Rangsun Sitthichai located?
- Rangsun Sitthichai's practice location on file with NPPES is 100 Century Dr, Worcester, MA 01606-1244.
- What is Rangsun Sitthichai's phone number?
- The practice phone number listed in the NPPES registry for Rangsun Sitthichai is (774) 442-2263.
- Does Rangsun Sitthichai accept Medicare?
- Rangsun Sitthichai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rangsun Sitthichai's NPI active?
- Yes — Rangsun Sitthichai's NPI (1427259712) is active in the NPPES registry as of the last update on 2023-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.