Mark Alderdice, M.D.
NPI 1689612871 · Emergency Medicine Physician · Daly City, CA
Mark Alderdice, M.D. is a Emergency Medicine Physician provider in Daly City, CA (NPI 1689612871).
Provider details
- NPI number
- 1689612871
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G62209 (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
20 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
- 2006-06-02
- Last updated
- 2008-07-21
Frequently asked questions
- What is Mark Alderdice's NPI number?
- Mark Alderdice's National Provider Identifier (NPI) is 1689612871, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Alderdice's specialty?
- Mark Alderdice is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Alderdice located?
- Mark Alderdice's practice location on file with NPPES is 1900 Sullivan Ave, Daly City, CA 94015-2200.
- What is Mark Alderdice's phone number?
- The practice phone number listed in the NPPES registry for Mark Alderdice is (415) 992-4000.
- Is Mark Alderdice's NPI active?
- Yes — Mark Alderdice's NPI (1689612871) is active in the NPPES registry as of the last update on 2008-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.