1. Home
  2. Directory
  3. California
  4. Berkeley
  5. Optometrist
  6. NPI Profile

KAREN NGUYEN
NPI 1598657041
Optometrist in Berkeley, CA

Active since July 18, 2025PECOS EnrolledAccepts Medicare Assignment
200 MINOR HALL, BERKELEY, CA 94720(510) 642-2020 Get Directions Write a Review

NPPES record last updated: July 18, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Karen Nguyen NPPES

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

KAREN NGUYEN (NPI 1598657041) is an individual optometrist in Berkeley, California, licensed in California (36079) and active in the NPI registry since July 2025. She is enrolled in Medicare PECOS and is a graduate of Southern California College Of Optometry (2025).

NPPES Registry Identity

NPI1598657041
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameKAREN NGUYEN
Location Address200 MINOR HALLBerkeley, CA 94720-0001
Mailing Address200 Minor HallBerkeley, CA 94720-0001 · (510) 642-2020
Phone(510) 642-2020
Sole ProprietorYes
Medical School CMSSouthern California College Of OptometryGraduated 2025
Enumeration DateJuly 18, 2025
NPPES CertifiedJuly 18, 2025
✔ NPI 1598657041 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in CA · 36079
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
200 MINOR HALL, Berkeley, CA 94720
Open in Google Maps ↗

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

Karen Nguyen 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 ID446753321
PECOS Enrollment IDI20250915003512
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94720 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 20

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

DR. CARL H. JACOBSEN O.D.
Optometrist
200 MINOR HALL, UC BERKELEY
BERKELEY, CA 94720
Alameda County (510) 643-9826
DR. JOHN CORZINE O.D.
Optometrist (Corneal and Contact Management)
200 MINOR HALL, UNIVERSITY OF CALIFORNIA
BERKELEY, CA 94720
Alameda County (510) 643-2793
DR. JOYCE CHI YAN YU O.D.
Optometrist
200 MINOR HALL
BERKELEY, CA 94720
Alameda County (510) 642-2020
JEFFREY KAMO OD
Optometrist (Corneal and Contact Management)
200 MINOR HALL
BERKELEY, CA 94720
Alameda County (510) 642-2020
DR. TUONG-VY VIVIAN NGUYEN OD
Optometrist
200 MINOR HALL
BERKELEY, CA 94720
Alameda County (510) 642-2020
DR. VALERY MEDINA OD
Optometrist
200 MINOR HALL
BERKELEY, CA 94720
Alameda County (510) 642-6123
DR. KAYLE RAE EDWARDS OD
Optometrist
200 MINOR HALL
BERKELEY, CA 94720
Alameda County (510) 642-2020
DR. SARA FRANE O.D.
Optometrist
200 MINOR HALL, UNIVERSITY OF CALIFORNIA, BERKELEY
BERKELEY, CA 94720
Alameda County (510) 642-2020

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 Karen Nguyen's NPI number?

The NPI number for Karen Nguyen is 1598657041. It was assigned to this individual provider in the NPPES registry on July 18, 2025.

Where is Karen Nguyen located?

Karen Nguyen practices at 200 Minor Hall, Berkeley, CA 94720. The listed phone number is (510) 642-2020.

What is Karen Nguyen's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Karen Nguyen enrolled in Medicare?

Yes. Karen Nguyen 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 Karen Nguyen was last updated on July 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.