DR. TERESA ANN YIM O.D.
NPI 1003969650
Optometrist - Corneal and Contact Management in Livermore, CA

Q: What is Teresa Yim's NPI number?

The NPI number for Teresa Yim is 1003969650. It was assigned to this individual provider in the NPPES registry on January 18, 2007.

Q: What is Teresa Yim's specialty?

The primary specialty registered for this NPI is Optometrist, specializing in Corneal and Contact Management, with taxonomy code 152WC0802X.

Q: When was this NPI record last updated?

The NPPES record for Teresa Yim was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since January 18, 2007PECOS Enrolled

1800 4TH ST, LIVERMORE, CA 94550(925) 447-3883(925) 447-2957 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Teresa Ann Yim O.d. NPPES

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

DR. TERESA ANN YIM O.D. (NPI 1003969650) is an individual corneal and contact management provider in Livermore, California, licensed in California (7953T) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003969650

Entity TypeIndividualFemale

Primary Taxonomy152WC0802X

Provider Legal NameDR. TERESA ANN YIMCredential: O.D.

Location Address1800 4TH STLivermore, CA 94550-4454

Mailing Address1800 4th StLivermore, CA 94550-4454 · (925) 447-3883 · Fax (925) 447-2957

Phone(925) 447-3883

Fax(925) 447-2957

Sole ProprietorNo

Enumeration DateJanuary 18, 2007

Last NPPES UpdateMarch 7, 2023

✔ NPI 1003969650 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometrist · Corneal and Contact ManagementEye and Vision Services Providers

Taxonomy Code152WC0802X

License✔ Licensed in CA · 7953T

Definition

The professional activities performed by an Optometrist related to the fitting of contact lenses to an eye, ongoing evaluation of the cornea's ability to sustain successful contact lens wear, and treatment of any external eye or corneal condition which can affect contact lens wear.

1800 4TH ST, Livermore, CA 94550

Open in Google Maps ↗

Other Identifiers 1

MedicaidSD0079530CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Teresa Ann Yim O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Teresa Yim reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Livermore Optometry Group

Same address

Optometrist

1800 4TH ST
Livermore, CA 94550

Reassigned Medicare billing, California enrollment
11 clinicians in this Medicare group

NPI 1114062635 (925) 447-3883

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 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.

Photography of the retina 92250

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

48 services48 patients

Established patient complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

26 services26 patients

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.

20 services20 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94550 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.

Other Providers at the Same Location NPPES 6

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

LIVERMORE OPTOMETRY GROUP

Optometrist