Lewis Guiss Jr., MD
NPI 1629145636 · Internal Medicine Physician · Los Angeles, CA
Lewis Guiss Jr., MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1629145636).
Provider details
- NPI number
- 1629145636
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G32716 (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
- 2006-11-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is Lewis Guiss Jr.'s NPI number?
- Lewis Guiss Jr.'s National Provider Identifier (NPI) is 1629145636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lewis Guiss Jr.'s specialty?
- Lewis Guiss Jr. is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lewis Guiss Jr. located?
- Lewis Guiss Jr.'s practice location on file with NPPES is 6041 Cadillac Ave, Los Angeles, CA 90034-1702.
- What is Lewis Guiss Jr.'s phone number?
- The practice phone number listed in the NPPES registry for Lewis Guiss Jr. is (323) 857-2000.
- Is Lewis Guiss Jr.'s NPI active?
- Yes — Lewis Guiss Jr.'s NPI (1629145636) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.