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

Deepak Thiagarajan, MD

Individual provider Internal Medicine Physician · NPI 1205052990

Deepak Thiagarajan, MD is a Hospitalist in Rancho Cucamonga, California. Qualified in 2002, 24 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in California and Rhode Island.

Years since qualifying
24
Licensed in
CA, RI
In the registry since
2007
Specialties on file
3
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

7974 Haven Ave Ste 210
Rancho Cucamonga, CA 91730-3052
Phone: (909) 881-5994
Fax: (909) 248-7769
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence A 113059 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD12318 (RI)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X · Licence LP00988 (RI)

Record details

NPI number1205052990
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 18, 2007
Last updated in NPPESApril 4, 2024
Certification dateApril 4, 2024

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Rancho Cucamonga