Glenn D Littenberg MD Inc
NPI 1336337542 · Gastroenterology Physician · Pasadena, CA
Glenn D Littenberg MD Inc is a Gastroenterology Physician organization in Pasadena, CA (NPI 1336337542).
Provider details
- NPI number
- 1336337542
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Glenn Littenberg, President(626) 449-9920
- License
- G27849 (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
18 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
- 2007-10-12
- Last updated
- 2009-06-17
Frequently asked questions
- What is Glenn D Littenberg MD Inc's NPI number?
- Glenn D Littenberg MD Inc's National Provider Identifier (NPI) is 1336337542, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Glenn D Littenberg MD Inc?
- Glenn D Littenberg MD Inc is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Glenn D Littenberg MD Inc located?
- Glenn D Littenberg MD Inc's practice location on file with NPPES is 630 S Raymond Ave, Pasadena, CA 91105-3278.
- What is Glenn D Littenberg MD Inc's phone number?
- The practice phone number listed in the NPPES registry for Glenn D Littenberg MD Inc is (626) 449-9920.
- Who is the authorized official for Glenn D Littenberg MD Inc?
- The authorized official listed on Glenn D Littenberg MD Inc's NPPES record is Glenn Littenberg, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Glenn D Littenberg MD Inc's NPI active?
- Yes — Glenn D Littenberg MD Inc's NPI (1336337542) is active in the NPPES registry as of the last update on 2009-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.