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

Individual provider Internal Medicine Physician · NPI 1891819090

Baldomero De Leon Jr., MD is an Internal Medicine in Walnut Creek, California. Graduated from University of Washington School of Medicine in 1976, 50 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
50
Trained at
University of Washington School of Medicine
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1479 Ygnacio Valley Rd Ste #201
Walnut Creek, CA 94598-2986
Phone: (925) 932-1018
Fax: (925) 932-7938
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G35749 (CA)

Record details

NPI number1891819090
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 16, 2007
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 1976 (50 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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