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DR. THERESA TSENG M.D.
NPI 1558466979
Family Medicine in Alhambra, CA

Active since September 13, 2006PECOS Enrolled
1153 S GARFIELD AVE, ALHAMBRA, CA 91801(626) 281-1961(626) 281-6564 Get Directions Write a Review

NPPES record last updated: June 28, 2011. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Theresa Tseng M.d. NPPES

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

DR. THERESA TSENG M.D. (NPI 1558466979) is an individual family medicine provider in Alhambra, California, licensed in California (A383980) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1978).

NPPES Registry Identity

NPI1558466979
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. THERESA TSENGCredential: M.D.
Location Address1153 S GARFIELD AVEAlhambra, CA 91801-4714
Mailing Address1153 S Garfield AveAlhambra, CA 91801-4714 · (626) 281-1961 · Fax (626) 281-6564
Phone(626) 281-1961
Fax(626) 281-6564
Sole ProprietorYes
Medical School CMSOtherGraduated 1978
Enumeration DateSeptember 13, 2006
Last NPPES UpdateJune 28, 2011
✔ NPI 1558466979 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A383980
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License A383980 (CA)
1153 S GARFIELD AVE, Alhambra, CA 91801
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Other Identifiers 3

Medicaid00A383980CA
Medicare UPINA85125CA
Medicare PINWA38398A

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Theresa Tseng M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5395894109
PECOS Enrollment IDI20090528000230
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.

Medicare Billing Reassignment

Medicare enrollment records show Theresa Tseng reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Better Care Medical Group, Inc.
Same address
Family Medicine
1153 S GARFIELD AVE
Alhambra, CA 91801
  • Reassigned Medicare billing, California enrollment
  • 2 clinicians in this Medicare group
NPI 1609061811 (626) 281-1961

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

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 low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
173 services69 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
50 services50 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
40 services40 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91801 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Other Providers at the Same Location NPPES

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

BETTER CARE MEDICAL GROUP, INC.
Family Medicine
1153 S GARFIELD AVE
ALHAMBRA, CA 91801
Los Angeles County (626) 281-1961

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 Theresa Tseng's NPI number?

The NPI number for Theresa Tseng is 1558466979. It was assigned to this individual provider in the NPPES registry on September 13, 2006.

Where is Theresa Tseng located?

Theresa Tseng practices at 1153 S Garfield Ave, Alhambra, CA 91801. The listed phone number is (626) 281-1961.

What is Theresa Tseng's specialty?

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

Is Theresa Tseng enrolled in Medicare?

Yes. Theresa Tseng is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Theresa Tseng's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Tseng reassigns Medicare benefits to Better Care Medical Group, Inc. (Alhambra, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Theresa Tseng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Theresa Tseng was last updated on June 28, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.