Alexander Butwick, MD
NPI 1629119888 · Anesthesiology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Butwick, MD is a Anesthesiology Physician provider in San Francisco, CA (NPI 1629119888).
Provider details
- NPI number
- 1629119888
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A105781 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$112 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 300 Pasteur DrStanford, CA 94305-2200Phone: (650) 723-4000
- 300 Pasteur DrH3580 Mc 5640Stanford, CA 94305-2200Phone: (650) 723-6411
Registry dates
- Enumerated
- 2007-02-09
- Last updated
- 2024-09-18
- Certified
- 2024-09-18
Frequently asked questions
- What is Alexander Butwick's NPI number?
- Alexander Butwick's National Provider Identifier (NPI) is 1629119888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Butwick's specialty?
- Alexander Butwick is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Butwick located?
- Alexander Butwick's practice location on file with NPPES is 521 Parnassus Ave Fl 4, San Francisco, CA 94143-2206.
- What is Alexander Butwick's phone number?
- The practice phone number listed in the NPPES registry for Alexander Butwick is (415) 476-9035.
- Does Alexander Butwick accept Medicare?
- Alexander Butwick is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Butwick's NPI active?
- Yes — Alexander Butwick's NPI (1629119888) is active in the NPPES registry as of the last update on 2024-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.