Marcus Zachary, DO
NPI 1396859229 · Internal Medicine Physician · San Francisco, CA
Marcus Zachary, DO is a Internal Medicine Physician provider in San Francisco, CA (NPI 1396859229).
Provider details
- NPI number
- 1396859229
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A8112 (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
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
- 2006-08-18
- Last updated
- 2008-10-01
Frequently asked questions
- What is Marcus Zachary's NPI number?
- Marcus Zachary's National Provider Identifier (NPI) is 1396859229, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcus Zachary's specialty?
- Marcus Zachary is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marcus Zachary located?
- Marcus Zachary's practice location on file with NPPES is 900 Hyde St, San Francisco, CA 94109-4806.
- What is Marcus Zachary's phone number?
- The practice phone number listed in the NPPES registry for Marcus Zachary is (415) 353-6817.
- Is Marcus Zachary's NPI active?
- Yes — Marcus Zachary's NPI (1396859229) is active in the NPPES registry as of the last update on 2008-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.