MISS VIVIAN YEN ILES O.D.
NPI 1952604357
Optometrist in Manteca, CA

Q: What is Vivian Iles's NPI number?

The NPI number for Vivian Iles is 1952604357. It was assigned to this individual provider in the NPPES registry on December 8, 2010. The provider is also known as Vivian Yen Diep.

Q: What is Vivian Iles's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Vivian Iles was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 December 08, 2010PECOS Enrolled

302 NORTHGATE DR, MANTECA, CA 95336(866) 682-4842(209) 239-5295 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Feb 11, 2022, Aug 19, 2021, Apr 16, 2019 (3 updates tracked since 2019).

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About Miss Vivian Yen Iles O.d. NPPES

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

MISS VIVIAN YEN ILES O.D. (NPI 1952604357) is an individual optometrist in Manteca, California, licensed in California (15424) and active in the NPI registry since December 2010. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1952604357

Entity TypeIndividualFemale

Primary Taxonomy152W00000X

Provider Legal NameMISS VIVIAN YEN ILESCredential: O.D.

Location Address302 NORTHGATE DRManteca, CA 95336-3139

Mailing Address737 W Childs AveMerced, CA 95341-6805 · (209) 384-6493 · Fax (209) 359-2045

Phone(866) 682-4842

Fax(209) 239-5295

Sole ProprietorYes

Enumeration DateDecember 8, 2010

Last NPPES UpdateFebruary 11, 20223 updates tracked since enumeration

NPPES CertifiedAugust 19, 2021

✔ NPI 1952604357 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

Licenses✔ Licensed in CA · 15424✔ Licensed in CO · 0003002✔ Licensed in CA · OPT15424-TLG

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.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

302 NORTHGATE DR, Manteca, CA 95336

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Other Names 1

Former Name (1)Vivian Yen Diep

Secondary Practice Locations 2

Location 1857 W Childs AveMerced, CA 95341-6862 · Phone (866) 682-4842

Location 22725 W Canyon Ave, apt 138San Diego, CA 92123-4722 · Phone (209) 623-5024

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Miss Vivian Yen Iles 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 Reassignments

Medicare enrollment records show Vivian Iles reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc

14 mi

Internal Medicine

7373 WEST LANE
Stockton, CA 95210

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1548343510 (209) 476-2000

Bradley J Sandler MD Inc

55 mi

Optometrist

1360 BURTON DR STE 150
Vacaville, CA 95687

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

NPI 1669885661 (707) 422-6500

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95336 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

$133.94 typical visit price

range $58.87 – $176.60

Typical copayment $33.48 (range $14.71 – $44.15)

Most-billed visit code 99204

Established Patient

$73.16 typical visit price

range $19.28 – $144.60

Typical copayment $18.29 (range $4.82 – $36.15)

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

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

GOLDEN VALLEY HEALTH CENTER

Clinic/Center (Federally Qualified Health Center (FQHC))

302 NORTHGATE DR
MANTECA, CA 95336

San Joaquin County (209) 239-5299

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 Vivian Iles's NPI number?

The NPI number for Vivian Iles is 1952604357. It was assigned to this individual provider in the NPPES registry on December 8, 2010. The provider is also known as Vivian Yen Diep.

Where is Vivian Iles located?

Vivian Iles practices at 302 Northgate Dr, Manteca, CA 95336. The listed phone number is (866) 682-4842.

What is Vivian Iles's specialty?

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

Is Vivian Iles enrolled in Medicare?

Yes. Vivian Iles is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Vivian Iles's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Vivian Iles reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Stockton, CA) and Bradley J Sandler MD Inc (Vacaville, CA). Each 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 Vivian Iles'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 Vivian Iles was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.