Guillermo Vallejo, CRNA
NPI 1205237955 · Certified Registered Nurse Anesthetist · Orange, CA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guillermo Vallejo, CRNA is a Certified Registered Nurse Anesthetist provider in Orange, CA (NPI 1205237955).
Provider details
- NPI number
- 1205237955
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Male
- Sole proprietor
- Yes
- License
- 677299 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 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
241 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 | 182 | $68 |
| Anesthesia for Other Procedure on Eye00140 | 27 | $94 |
| Anesthesia for Retinal Surgery00145 | 19 | $136 |
| Anesthesia for Procedure on Eye for Corneal Transplant00144 | 13 | $112 |
Typical Medicare-allowed amounts for these services range $68–$136 (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
- 2014-09-12
- Last updated
- 2024-02-15
- Certified
- 2024-02-15
Frequently asked questions
- What is Guillermo Vallejo's NPI number?
- Guillermo Vallejo's National Provider Identifier (NPI) is 1205237955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Vallejo's specialty?
- Guillermo Vallejo is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Guillermo Vallejo located?
- Guillermo Vallejo's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Guillermo Vallejo's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Vallejo is (714) 456-7890.
- Does Guillermo Vallejo accept Medicare?
- Guillermo Vallejo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guillermo Vallejo's NPI active?
- Yes — Guillermo Vallejo's NPI (1205237955) is active in the NPPES registry as of the last update on 2024-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.