Alex Macario, MD
NPI 1265573869 · Anesthesiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alex Macario, MD is a Anesthesiology Physician provider in Stanford, CA (NPI 1265573869).
Provider details
- NPI number
- 1265573869
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A50514 (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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 300 Pasteur DrH3580 Mc5640Stanford, CA 94305-2200Phone: (650) 723-6411
Registry dates
- Enumerated
- 2007-02-08
- Last updated
- 2024-04-11
- Certified
- 2024-04-11
Frequently asked questions
- What is Alex Macario's NPI number?
- Alex Macario's National Provider Identifier (NPI) is 1265573869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alex Macario's specialty?
- Alex Macario is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Alex Macario located?
- Alex Macario's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Alex Macario's phone number?
- The practice phone number listed in the NPPES registry for Alex Macario is (650) 723-4000.
- Does Alex Macario accept Medicare?
- Alex Macario is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alex Macario's NPI active?
- Yes — Alex Macario's NPI (1265573869) is active in the NPPES registry as of the last update on 2024-04-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.