Karen Wu, CRNA
NPI 1548493778 · Certified Registered Nurse Anesthetist · Norwalk, CT
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Wu, CRNA is a Certified Registered Nurse Anesthetist provider in Norwalk, CT (NPI 1548493778).
Provider details
- NPI number
- 1548493778
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Female
- Sole proprietor
- No
- License
- 4170 (CT)
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
16 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
156 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 156 | $71 |
Typical Medicare-allowed amounts for these services range $71–$71 (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
Registry dates
- Enumerated
- 2009-09-04
- Last updated
- 2009-09-04
Frequently asked questions
- What is Karen Wu's NPI number?
- Karen Wu's National Provider Identifier (NPI) is 1548493778, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Wu's specialty?
- Karen Wu is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Wu located?
- Karen Wu's practice location on file with NPPES is 24 Stevens St, Norwalk, CT 06850-3852.
- What is Karen Wu's phone number?
- The practice phone number listed in the NPPES registry for Karen Wu is (203) 852-2000.
- Does Karen Wu accept Medicare?
- Karen Wu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Wu's NPI active?
- Yes — Karen Wu's NPI (1548493778) is active in the NPPES registry as of the last update on 2009-09-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.