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

John Terence Tan So, MD

Individual provider Internal Medicine Physician · NPI 1801924295

John Terence Tan So, MD is an Internal Medicine in Downey, California. Qualified in 1999, 27 years ago. Practices with Healthcare Partners Affiliates Medical Group, a 790-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
27
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

10441 Lakewood Blvd Ste AB
Downey, CA 90241-2744
Phone: (562) 869-1070
Fax: (562) 286-8777
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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 A98802 (CA)

Record details

NPI number1801924295
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 28, 2007
Last updated in NPPESNovember 29, 2025
Certification dateNovember 29, 2025
Mailing addressPo Box 35380, Las Vegas, NV 89133-5380

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Healthcare Partners Affiliates Medical Group — 790 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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