Larry J Marshall MD a Professional Corporation
NPI 1689884942 · General Practice Physician · Lakeside, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Larry J Marshall MD a Professional Corporation is a General Practice Physician organization in Lakeside, CA (NPI 1689884942).
Provider details
- NPI number
- 1689884942
- Entity type
- Organization
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Larry Marshall, President(619) 443-3843
- License
- A52344 (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
- 2007-05-23
- Last updated
- 2010-12-10
Frequently asked questions
- What is Larry J Marshall MD a Professional Corporation's NPI number?
- Larry J Marshall MD a Professional Corporation's National Provider Identifier (NPI) is 1689884942, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Larry J Marshall MD a Professional Corporation?
- Larry J Marshall MD a Professional Corporation is classified in the NPPES registry as General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Larry J Marshall MD a Professional Corporation located?
- Larry J Marshall MD a Professional Corporation's practice location on file with NPPES is 12517 Lakeshore Dr, Lakeside, CA 92040-3103.
- What is Larry J Marshall MD a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Larry J Marshall MD a Professional Corporation is (619) 443-3843.
- Does Larry J Marshall MD a Professional Corporation accept Medicare?
- Larry J Marshall MD a Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Larry J Marshall MD a Professional Corporation?
- The authorized official listed on Larry J Marshall MD a Professional Corporation's NPPES record is Larry Marshall, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Larry J Marshall MD a Professional Corporation's NPI active?
- Yes — Larry J Marshall MD a Professional Corporation's NPI (1689884942) is active in the NPPES registry as of the last update on 2010-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.