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

Calvin H. Deng, MD

Individual provider Internal Medicine Physician · NPI 1326126491

Calvin H. Deng, MD is an Internal Medicine in Walnut Creek, California. Graduated from Northwestern University Feinberg Medical School in 2001, 25 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
25
Trained at
Northwestern University Feinberg Medical School
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

320 Lennon Ln
Walnut Creek, CA 94598-2419
Phone: (925) 906-2000
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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 A83695 (CA)

Record details

NPI number1326126491
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 2, 2006
Last updated in NPPESDecember 13, 2021
Mailing address1800 Harrison St Fl 7, Oakland, CA 94612-3466

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 2001 (25 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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