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GURCHARAN SINGH REEN M.D.
NPI 1356499578
Internal Medicine - Cardiovascular Disease in Fremont, CA

Active since January 05, 2007PECOS EnrolledAccepts Medicare Assignment
1900 MOWRY AVE STE 101, FREMONT, CA 94538(510) 790-9047(510) 790-9456 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Gurcharan Singh Reen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GURCHARAN SINGH REEN M.D. (NPI 1356499578) is an individual cardiovascular disease provider in Fremont, California, licensed in California (A41841) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1968).

NPPES Registry Identity

NPI1356499578
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameGURCHARAN SINGH REENCredential: M.D.
Location Address1900 MOWRY AVE STE 101Fremont, CA 94538-1722
Mailing Address1900 Mowry Ave Ste 101Fremont, CA 94538-1722 · (510) 790-9047 · Fax (510) 790-9456
Phone(510) 790-9047
Fax(510) 790-9456
Sole ProprietorYes
Medical School CMSOtherGraduated 1968
Enumeration DateJanuary 5, 2007
Last NPPES UpdateJuly 9, 2007
✔ NPI 1356499578 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in CA · A41841
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
1900 MOWRY AVE STE 101, Fremont, CA 94538
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Other Identifiers 3

Medicare UPIND34092CA
Other00A418410CA · Provider#
Medicaid2597117CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gurcharan Singh Reen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1951454966
PECOS Enrollment IDI20090807000423
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
99 services23 patients
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
67 services65 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
66 services27 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94538 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gurcharan Reen's NPI number?

The NPI number for Gurcharan Reen is 1356499578. It was assigned to this individual provider in the NPPES registry on January 5, 2007.

Where is Gurcharan Reen located?

Gurcharan Reen practices at 1900 Mowry Ave Ste 101, Fremont, CA 94538. The listed phone number is (510) 790-9047.

What is Gurcharan Reen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Gurcharan Reen enrolled in Medicare?

Yes. Gurcharan Reen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Gurcharan Reen was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.