Walid Zairi, CRNA
NPI 1558808428 · Certified Registered Nurse Anesthetist · Concord, MA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walid Zairi, CRNA is a Certified Registered Nurse Anesthetist provider in Concord, MA (NPI 1558808428).
Provider details
- NPI number
- 1558808428
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Male
- Sole proprietor
- No
- License
- RN2308491 (MA)
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
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
38 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 Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 13 | $76 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 13 | $230 |
| Anesthesia for Total Hip Replacement01214 | 12 | $224 |
Typical Medicare-allowed amounts for these services range $76–$230 (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)
- 330 Mount Auburn StCambridge, MA 02138-5502Phone: (617) 492-3500
Registry dates
- Enumerated
- 2017-01-30
- Last updated
- 2021-09-15
- Certified
- 2021-09-15
Frequently asked questions
- What is Walid Zairi's NPI number?
- Walid Zairi's National Provider Identifier (NPI) is 1558808428, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walid Zairi's specialty?
- Walid Zairi is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Walid Zairi located?
- Walid Zairi's practice location on file with NPPES is 133 Old Road to 9 Acre Cor, Concord, MA 01742-4159.
- What is Walid Zairi's phone number?
- The practice phone number listed in the NPPES registry for Walid Zairi is (978) 369-1400.
- Does Walid Zairi accept Medicare?
- Walid Zairi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walid Zairi's NPI active?
- Yes — Walid Zairi's NPI (1558808428) is active in the NPPES registry as of the last update on 2021-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.