John W Pierce MD
NPI 1033485602 · Internal Medicine Physician · San Francisco, CA
John W Pierce MD is a Internal Medicine Physician organization in San Francisco, CA (NPI 1033485602).
Provider details
- NPI number
- 1033485602
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jessica Arias, Office Manager(415) 826-2438
- License
- G45225 (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
14 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
Other names (DBA / former)
- Doing business as
- Los Portales Family Medicine
Registry dates
- Enumerated
- 2012-03-28
- Last updated
- 2012-03-28
Frequently asked questions
- What is John W Pierce MD's NPI number?
- John W Pierce MD's National Provider Identifier (NPI) is 1033485602, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John W Pierce MD?
- John W Pierce MD is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John W Pierce MD located?
- John W Pierce MD's practice location on file with NPPES is 2480 Mission St Ste 329, San Francisco, CA 94110-2487.
- What is John W Pierce MD's phone number?
- The practice phone number listed in the NPPES registry for John W Pierce MD is (415) 826-2438.
- Who is the authorized official for John W Pierce MD?
- The authorized official listed on John W Pierce MD's NPPES record is Jessica Arias, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John W Pierce MD's NPI active?
- Yes — John W Pierce MD's NPI (1033485602) is active in the NPPES registry as of the last update on 2012-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.