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

Individual provider Internal Medicine Physician · NPI 1992873723

Nang Lok Ellick Tsang, MD is an Internal Medicine in San Francisco, California. Qualified in 1984, 42 years ago. Practices as a sole proprietor and offers telehealth. Licensed in California.

Years since qualifying
42
Licensed in
CA
In the registry since
2006
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

3085 24th St Ste 203
San Francisco, CA 94110-4153
Phone: (415) 648-5900
Fax: (650) 491-7735
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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 CA A053928 (CA)

Record details

NPI number1992873723
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 1, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1984 (42 years in practice)
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services

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