Rachel Chao, PA
NPI 1548905649 · Physician Assistant · Stony Brook, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachel Chao, PA is a Physician Assistant provider in Stony Brook, NY (NPI 1548905649).
Provider details
- NPI number
- 1548905649
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
30 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 Straightforward Medical Decision Making99282 | 30 | $40 |
Typical Medicare-allowed amounts for these services range $40–$40 (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.
Practice location
Mailing address
Additional practice locations (1)
- 1 Campus RdStaten Island, NY 10301-4479Phone: (718) 390-1300
Registry dates
- Enumerated
- 2022-05-03
- Last updated
- 2022-09-27
- Certified
- 2022-09-27
Frequently asked questions
- What is Rachel Chao's NPI number?
- Rachel Chao's National Provider Identifier (NPI) is 1548905649, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel Chao's specialty?
- Rachel Chao is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rachel Chao located?
- Rachel Chao's practice location on file with NPPES is 100 Nicolls Road, Stony Brook, NY 11794-8122.
- What is Rachel Chao's phone number?
- The practice phone number listed in the NPPES registry for Rachel Chao is (631) 444-1116.
- Does Rachel Chao accept Medicare?
- Rachel Chao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachel Chao's NPI active?
- Yes — Rachel Chao's NPI (1548905649) is active in the NPPES registry as of the last update on 2022-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.