Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Ling Xu, MD

Individual provider Internal Medicine Physician · NPI 1073684429

Ling Xu, MD is an Internal Medicine in Castro Valley, California. Qualified in 1983, 43 years ago. Practices with University Healthcare Alliance, a 332-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
43
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

20642 John Dr
Castro Valley, CA 94546-5103
Phone: (510) 785-5000
Fax: (510) 785-5295
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 20130 Lake Chabot Rd, Castro Valley, CA 94546-5340 — (510) 690-9360
  • 9615 Crosby Dr, Pleasanton, CA 94588-4613 — (510) 690-9360

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A69273 (CA)

Record details

NPI number1073684429
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 9, 2006
Last updated in NPPESApril 24, 2024
Certification dateApril 24, 2024
Mailing address20642 John Dr, Castro Valley, CA 94546-5103

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1983 (43 years in practice)
Group practice University Healthcare Alliance — 332 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Castro Valley