TAMMY YUE CHEN MD
NPI 1093887721
Family Medicine in Oakland, CA

Active since November 15, 2006PECOS EnrolledAccepts Medicare Assignment
818 WEBSTER ST, OAKLAND, CA 94607(510) 986-6830(510) 986-6890 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Tammy Yue Chen Md NPPES

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

TAMMY YUE CHEN MD (NPI 1093887721) is an individual family medicine provider in Oakland, California, licensed in California (A90848) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1982).

NPPES Registry Identity

NPI1093887721
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameTAMMY YUE CHENCredential: MD
Location Address818 WEBSTER STOakland, CA 94607-4220
Mailing Address818 Webster StOakland, CA 94607-4220 · (510) 986-6830 · Fax (510) 986-6890
Fax(510) 986-6890
Sole ProprietorNo
Medical School CMSOtherGraduated 1982
Enumeration DateNovember 15, 2006
Last NPPES UpdateJuly 8, 2007
NPI 1093887721 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License Licensed in CA · A90848
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
818 WEBSTER ST, Oakland, CA 94607

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

Tammy Yue Chen Md 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 ID4789746611
PECOS Enrollment IDI20081230000568
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

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.

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.
61 services60 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94607 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
7 suppliers17 claims42 services$6.28 avg. paid by Medicare
Standard wheelchair K0001
DME-Wheelchairs · category DD000N
2 suppliers15 claims16 services$13.36 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
1 supplier15 claims15 services$203.18 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Nurse Practitioner (Family)
818 WEBSTER ST
OAKLAND, CA 94607
Internal Medicine
818 WEBSTER ST, ASIAN HEALTH SERVICES
OAKLAND, CA 94607
Family Medicine
818 WEBSTER ST
OAKLAND, CA 94607
Registered Nurse
818 WEBSTER ST
OAKLAND, CA 94607
Registered Nurse
818 WEBSTER ST
OAKLAND, CA 94607
Licensed Vocational Nurse
818 WEBSTER ST
OAKLAND, CA 94607
Nurse Practitioner (Family)
818 WEBSTER ST
OAKLAND, CA 94607
Registered Nurse
818 WEBSTER ST
OAKLAND, CA 94607

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 Tammy Chen's NPI number?

The NPI number for Tammy Chen is 1093887721. It was assigned to this individual provider in the NPPES registry on November 15, 2006.

Where is Tammy Chen located?

Tammy Chen practices at 818 Webster St, Oakland, CA 94607. The listed phone number is (510) 986-6830.

What is Tammy Chen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Tammy Chen enrolled in Medicare?

Yes. Tammy Chen 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 Tammy Chen was last updated on July 8, 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.