NPI registry status
Active
2026 NPPES data Child & Adolescent Psychiatry Physician NPI 1427259712 M.D.
Verify on CMS → Rangsun Sitthichai, M.D.
Child & Adolescent Psychiatry Physician in Worcester, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,160 in Child & Adolescent Psychiatry Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 119 beneficiaries · Child & Adolescent Psychiatry Physician avg: 600
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Rangsun Sitthichai, M.D. filed 2,188 Medicare Part D claims in 2023 as a Child & Adolescent Psychiatry Physician in Worcester, Massachusetts, prescribing 94% generic.
- 2K
- Part D claims, 2023
- 94%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Rangsun Sitthichai, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,188 Top 15% higher than 85% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Rangsun Sitthichai, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Rangsun Sitthichai, M.D.?
Quality data not reportedPrimary specialty
Child & Adolescent Psychiatry Physician
Medicare Part D claims
2,188 265% vs specialty avg
Specialty distribution in Massachusetts
How Child & Adolescent Psychiatry Physician compares to other specialties among Massachusetts providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Child & Adolescent Psychiatry Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Rangsun Sitthichai, M.D. appears in the CMS NPPES registry as a Child & Adolescent Psychiatry Physician provider holding M.D. credentials at 100 CENTURY DR, Worcester, MA, 01606, with a listed phone of (774) 442-2263. NPI 1427259712 was issued on 05/31/2007.
Medicare Part D records for calendar year 2023 show 2,188 prescription claims written by this provider, covering 119 Medicare beneficiaries and totaling roughly $215K in drug spend, split 6% brand-name and 94% generic by claim count.
Child & Adolescent Psychiatry Physician is a mid-sized specialty nationwide, with 6,160 enrolled providers across 54 states and an average of 600 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1427259712 |
|---|---|
| Specialty | Child & Adolescent Psychiatry Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/31/2007 |
Hospital and facility affiliations
Facilities where Rangsun Sitthichai, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Community Healthlink Inc
Worcester, MA
President And Fellows OF Harvard College
Cambridge, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Rangsun Sitthichai, M.D.. To verify Rangsun Sitthichai, M.D.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Rangsun Sitthichai, M.D. - brand share 6.0%
Child & Adolescent Psychiatry Physician average
6% brand-name claims vs 94% generic, on 2,188 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,188
Total Claims
$215K
Total Drug Cost
119
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,839
- Total Day Supply
- 83,049
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $123K
- Generic Drug Cost
- $92K
Patient Demographics
- Average Patient Age
- 42.2 years
- Avg HCC Risk Score
- 0.96
- Gender Split
- 39% female / 61% male
- Age Distribution
- <65: 108, 65-74: N/A, 75-84: N/A, 85+: 0
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Rangsun Sitthichai, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Risperidone
Risperidone
142 claims
- Bupropion Xl
Bupropion Xl
121 claims
- Clonazepam
Clonazepam
118 claims
- Sertraline Hcl
Sertraline Hcl
109 claims
- Trazodone Hcl
Trazodone Hcl
106 claims
- Olanzapine
Olanzapine
104 claims
- Benztropine Mesylate
Benztropine Mesylate
95 claims
- Clonidine Hcl
Clonidine Hcl
91 claims
| Drug | Claims |
|---|---|
| Risperidone | 142 |
| Bupropion Xl Bupropion Hcl | 121 |
| Clonazepam | 118 |
| Sertraline Hcl | 109 |
| Trazodone Hcl | 106 |
| Olanzapine | 104 |
| Benztropine Mesylate | 95 |
| Clonidine Hcl | 91 |
| Fluoxetine Hcl | 91 |
| Aripiprazole | 84 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Child & Adolescent Psychiatry Physician in MA →
All providers in Massachusetts →
Compare specialties →
Child & Adolescent Psychiatry Physician Overview
How Rangsun Sitthichai, M.D. fits within the Child & Adolescent Psychiatry Physician landscape nationally.
6,160
Child & Adolescent Psychiatry Physician Providers in US
54
States with Child & Adolescent Psychiatry Physician
600
Avg Claims per Provider
Rangsun Sitthichai, M.D.'s 2,188 claims are above the specialty average of 600.
Nearby Child & Adolescent Psychiatry Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Sitthichai.
Dr. Patricia Abbott
MD
Westwood, MA
Dr. Annah Abrams
MD
Boston, MA
Dr. Ashley Adams
MD
Boston, MA
Dr. David Adams
MD
Boston, MA
Dr. Peter Adams
M.D.
Newton, MA
Compare Child & Adolescent Psychiatry Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Massachusetts medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Child & Adolescent Psychiatry Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Rangsun Sitthichai, M.D.'s specialty? ▼
Rangsun Sitthichai, M.D. specializes in Child & Adolescent Psychiatry Physician and practices in Worcester, Massachusetts. Credentials: M.D..
How much does Rangsun Sitthichai, M.D. prescribe under Medicare Part D? ▼
In 2023, Rangsun Sitthichai, M.D. wrote 2,188 Medicare Part D claims totaling $215K in drug costs for 119 beneficiaries.
Where is Rangsun Sitthichai, M.D. located? ▼
Rangsun Sitthichai, M.D. is located at 100 CENTURY DR, Worcester, MA, 01606. Phone: (774) 442-2263.
What is Rangsun Sitthichai, M.D.'s NPI number? ▼
Rangsun Sitthichai, M.D.'s National Provider Identifier (NPI) is 1427259712, issued on 05/31/2007.
Does Rangsun Sitthichai, M.D. prescribe more brand-name or generic drugs? ▼
Rangsun Sitthichai, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $123K in brand drug costs.
How many Child & Adolescent Psychiatry Physician providers are there in the US? ▼
There are 6,160 Child & Adolescent Psychiatry Physician providers across 54 states in the US. The average Child & Adolescent Psychiatry Physician provider writes 600 Medicare Part D claims per year.
What drugs does Rangsun Sitthichai, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Rangsun Sitthichai, M.D.'s most frequently prescribed drugs include Risperidone, Bupropion Xl, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Rangsun Sitthichai, M.D. accept Medicare? ▼
Rangsun Sitthichai, M.D. appears in CMS Medicare data with 2,188 Part D claims and 119 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Rangsun Sitthichai, M.D.'s credentials? ▼
Rangsun Sitthichai, M.D.'s NPI is 1427259712 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.