Won Jo, MD, Inc
NPI 1235354408 · Gastroenterology Physician · San Bernardino, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Won Jo, MD, Inc is a Gastroenterology Physician organization in San Bernardino, CA (NPI 1235354408).
Provider details
- NPI number
- 1235354408
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Won-Seok Jo, President(714) 350-5651
- License
- A91260 (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
- 2007-04-14
- Last updated
- 2023-10-17
- Certified
- 2023-10-17
Frequently asked questions
- What is Won Jo, MD, Inc's NPI number?
- Won Jo, MD, Inc's National Provider Identifier (NPI) is 1235354408, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Won Jo, MD, Inc?
- Won Jo, MD, Inc is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Won Jo, MD, Inc located?
- Won Jo, MD, Inc's practice location on file with NPPES is 424 E Vanderbilt Way Ste B, San Bernardino, CA 92408-3552.
- What is Won Jo, MD, Inc's phone number?
- The practice phone number listed in the NPPES registry for Won Jo, MD, Inc is (909) 796-0363.
- Does Won Jo, MD, Inc accept Medicare?
- Won Jo, MD, Inc 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 Won Jo, MD, Inc?
- The authorized official listed on Won Jo, MD, Inc's NPPES record is Won-Seok Jo, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Won Jo, MD, Inc's NPI active?
- Yes — Won Jo, MD, Inc's NPI (1235354408) is active in the NPPES registry as of the last update on 2023-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.