Mark Guirguis, MD
NPI 1164009973 · Anesthesiology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Guirguis, MD is a Anesthesiology Physician provider in Los Angeles, CA (NPI 1164009973).
Provider details
- NPI number
- 1164009973
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A197540 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-26
- Last updated
- 2025-10-22
- Certified
- 2025-10-22
Frequently asked questions
- What is Mark Guirguis's NPI number?
- Mark Guirguis's National Provider Identifier (NPI) is 1164009973, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Guirguis's specialty?
- Mark Guirguis is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Guirguis located?
- Mark Guirguis's practice location on file with NPPES is 757 Westwood Plz Ste 3325, Los Angeles, CA 90095-7419.
- What is Mark Guirguis's phone number?
- The practice phone number listed in the NPPES registry for Mark Guirguis is (310) 267-8626.
- Does Mark Guirguis accept Medicare?
- Mark Guirguis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Guirguis's NPI active?
- Yes — Mark Guirguis's NPI (1164009973) is active in the NPPES registry as of the last update on 2025-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.