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

Dr. Joseph G Mallon, MD

Individual provider Internal Medicine Physician · NPI 1407041197

Dr. Joseph G Mallon, MD is a Hospitalist in San Francisco, California. Qualified in 2001, 25 years ago. Practices with Vituity Hospitalists PC, a 78-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
25
Licensed in
CA
In the registry since
2007
Specialties on file
2
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

900 Hyde St
San Francisco, CA 94109-4806
Phone: (415) 353-6817
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence A97574 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A97574 (CA)

Record details

NPI number1407041197
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 6, 2007
Last updated in NPPESDecember 8, 2025
Certification dateDecember 8, 2025

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Vituity Hospitalists Pc — 78 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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