Casey Chiu
NPI 1518301191 · Emergency Medicine Physician · Westerly, RI
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Casey Chiu is a Emergency Medicine Physician provider in Westerly, RI (NPI 1518301191).
Provider details
- NPI number
- 1518301191
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- MD15911 (RI)
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
13 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
428 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 176 | $174 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 168 | $120 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 64 | $71 |
| Critical Care, First 30-74 Minutes99291 | 20 | $211 |
Typical Medicare-allowed amounts for these services range $71–$211 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 40 | 40 |
| Methylprednisolone | 38 | 38 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 26 | 25 |
| Doxycycline Hyclate | 25 | 23 |
| Ondansetronbrand: Ondansetron Odt | 19 | 19 |
| Azithromycin | 18 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-04-25
- Last updated
- 2026-05-04
- Certified
- 2026-05-04
Frequently asked questions
- What is Casey Chiu's NPI number?
- Casey Chiu's National Provider Identifier (NPI) is 1518301191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Casey Chiu's specialty?
- Casey Chiu is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Casey Chiu located?
- Casey Chiu's practice location on file with NPPES is 25 Wells St, Westerly, RI 02891-2922.
- What is Casey Chiu's phone number?
- The practice phone number listed in the NPPES registry for Casey Chiu is (401) 596-6000.
- Does Casey Chiu accept Medicare?
- Casey Chiu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Casey Chiu's NPI active?
- Yes — Casey Chiu's NPI (1518301191) is active in the NPPES registry as of the last update on 2026-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.