Joseph Witztum, M.D.
NPI 1699791491 · Endocrinology, Diabetes & Metabolism Physician · San Diego, CA
Joseph Witztum, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in San Diego, CA (NPI 1699791491).
Provider details
- NPI number
- 1699791491
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G29598 (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
- 2006-07-14
- Last updated
- 2019-12-17
- Certified
- 2019-12-17
Frequently asked questions
- What is Joseph Witztum's NPI number?
- Joseph Witztum's National Provider Identifier (NPI) is 1699791491, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Witztum's specialty?
- Joseph Witztum is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Witztum located?
- Joseph Witztum's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is Joseph Witztum's phone number?
- The practice phone number listed in the NPPES registry for Joseph Witztum is (800) 926-8273.
- Is Joseph Witztum's NPI active?
- Yes — Joseph Witztum's NPI (1699791491) is active in the NPPES registry as of the last update on 2019-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.