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Jay Marks, MD
NPI 1003871914 · Gastroenterology Physician · Los Angeles, CA
Jay Marks, MD is a Gastroenterology Physician provider in Los Angeles, CA (NPI 1003871914).
Provider details
- NPI number
- 1003871914
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G21318 (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
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
8635 W 3rd St
Suite #880
Los Angeles, CA 90048-6101
Phone: (323) 469-4499
Street-level locationGet directions
Mailing address
2521 Mt Beacon Ter
Los Angeles, CA 90068-2444
Registry dates
- Enumerated
- 2006-04-20
- Last updated
- 2013-02-04
Frequently asked questions
- What is Jay Marks's NPI number?
- Jay Marks's National Provider Identifier (NPI) is 1003871914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jay Marks's specialty?
- Jay Marks is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jay Marks located?
- Jay Marks's practice location on file with NPPES is 8635 W 3rd St, Los Angeles, CA 90048-6101.
- What is Jay Marks's phone number?
- The practice phone number listed in the NPPES registry for Jay Marks is (323) 469-4499.
- Is Jay Marks's NPI active?
- Yes — Jay Marks's NPI (1003871914) is active in the NPPES registry as of the last update on 2013-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.