Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Gurcharan Singh Reen, MD

Individual provider Cardiovascular Disease Physician · NPI 1356499578

Gurcharan Singh Reen, MD is registered under Cardiovascular Disease (Cardiology) in Fremont, California. Qualified in 1968, 58 years ago. Practices with Washington Township Hospital District, a 28-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
58
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

1900 Mowry Ave Ste 101
Fremont, CA 94538-1722 Not confirmed with CMS for 19 years — call before visiting
Phone: (510) 790-9047
Fax: (510) 790-9456
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence A41841 (CA)

Record details

NPI number1356499578
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 5, 2007
Last updated in NPPESJuly 9, 2007

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 1968 (58 years in practice)
Group practice Washington Township Hospital District — 28 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients86
Services billed 334 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Washington Township Hospital District

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 28 clinicians in the practice; 12 are shown here.

Other providers in Fremont