Ling Xu, Md,inc.
NPI 1033280896 · Internal Medicine Physician · Castro Valley, CA
Ling Xu, Md,inc. is a Internal Medicine Physician organization in Castro Valley, CA (NPI 1033280896).
Provider details
- NPI number
- 1033280896
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ling Xu, President(510) 690-9360
- License
- A69273 (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
- 2006-11-13
- Last updated
- 2020-08-22
Frequently asked questions
- What is Ling Xu, Md,inc.'s NPI number?
- Ling Xu, Md,inc.'s National Provider Identifier (NPI) is 1033280896, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ling Xu, Md,inc.?
- Ling Xu, Md,inc. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ling Xu, Md,inc. located?
- Ling Xu, Md,inc.'s practice location on file with NPPES is 20130 Lake Chabot Rd., Castro Valley, CA 94546.
- What is Ling Xu, Md,inc.'s phone number?
- The practice phone number listed in the NPPES registry for Ling Xu, Md,inc. is (510) 690-9360.
- Who is the authorized official for Ling Xu, Md,inc.?
- The authorized official listed on Ling Xu, Md,inc.'s NPPES record is Ling Xu, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ling Xu, Md,inc.'s NPI active?
- Yes — Ling Xu, Md,inc.'s NPI (1033280896) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.