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Joseph Witkin, MD
NPI 1144258963 · Emergency Medicine Physician · La Mesa, CA
Joseph Witkin, MD is a Emergency Medicine Physician provider in La Mesa, CA (NPI 1144258963).
Provider details
- NPI number
- 1144258963
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G32398 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
5555 Grossmont Center Drive
La Mesa, CA 91942-3019
Phone: (619) 644-4401
Street-level locationGet directions
Mailing address
Po Box 12170
Westminster, CA 92685-2170
Registry dates
- Enumerated
- 2006-06-29
- Last updated
- 2009-12-15
Frequently asked questions
- What is Joseph Witkin's NPI number?
- Joseph Witkin's National Provider Identifier (NPI) is 1144258963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Witkin's specialty?
- Joseph Witkin is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Witkin located?
- Joseph Witkin's practice location on file with NPPES is 5555 Grossmont Center Drive, La Mesa, CA 91942-3019.
- What is Joseph Witkin's phone number?
- The practice phone number listed in the NPPES registry for Joseph Witkin is (619) 644-4401.
- Is Joseph Witkin's NPI active?
- Yes — Joseph Witkin's NPI (1144258963) is active in the NPPES registry as of the last update on 2009-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.