Keith Leibowitz M.D. a Professional Corporation
NPI 1033989652 · Gastroenterology Physician · Modesto, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Keith Leibowitz M.D. a Professional Corporation is a Gastroenterology Physician organization in Modesto, CA (NPI 1033989652).
Provider details
- NPI number
- 1033989652
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Keith Leibowitz, Owner(757) 645-7079
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
2 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
Other names (DBA / former)
- Doing business as
- Keith Leibowitz M.D. a Professional Corporation
Registry dates
- Enumerated
- 2024-01-04
- Last updated
- 2024-01-04
- Certified
- 2024-01-04
Frequently asked questions
- What is Keith Leibowitz M.D. a Professional Corporation's NPI number?
- Keith Leibowitz M.D. a Professional Corporation's National Provider Identifier (NPI) is 1033989652, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Keith Leibowitz M.D. a Professional Corporation?
- Keith Leibowitz M.D. a Professional Corporation is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Keith Leibowitz M.D. a Professional Corporation located?
- Keith Leibowitz M.D. a Professional Corporation's practice location on file with NPPES is 203 Park Ave, Modesto, CA 95354-0557.
- What is Keith Leibowitz M.D. a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Keith Leibowitz M.D. a Professional Corporation is (757) 645-7079.
- Does Keith Leibowitz M.D. a Professional Corporation accept Medicare?
- Keith Leibowitz M.D. 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 Keith Leibowitz M.D. a Professional Corporation?
- The authorized official listed on Keith Leibowitz M.D. a Professional Corporation's NPPES record is Keith Leibowitz, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Keith Leibowitz M.D. a Professional Corporation's NPI active?
- Yes — Keith Leibowitz M.D. a Professional Corporation's NPI (1033989652) is active in the NPPES registry as of the last update on 2024-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.