Michael Guarnieri, M.D.
NPI 1851627004 · Student in an Organized Health Care Education/Training Program · San Francisco, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Guarnieri, M.D. is a Student in an Organized Health Care Education/Training Program provider in San Francisco, CA (NPI 1851627004).
Provider details
- NPI number
- 1851627004
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2009-10-22
- Last updated
- 2022-02-11
Frequently asked questions
- What is Michael Guarnieri's NPI number?
- Michael Guarnieri's National Provider Identifier (NPI) is 1851627004, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Guarnieri's specialty?
- Michael Guarnieri is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Michael Guarnieri located?
- Michael Guarnieri's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Michael Guarnieri's phone number?
- The practice phone number listed in the NPPES registry for Michael Guarnieri is (415) 476-1528.
- Does Michael Guarnieri accept Medicare?
- Michael Guarnieri is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Guarnieri's NPI active?
- Yes — Michael Guarnieri's NPI (1851627004) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.