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ANNESSA DU
NPI 1366008633
Optometrist in Loma Linda, CA

Active since May 13, 2019PECOS EnrolledAccepts Medicare Assignment
11346 MOUNTAIN VIEW AVE STE B, LOMA LINDA, CA 92354(909) 796-0101 Get Directions Write a Review

NPPES record last updated: January 9, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 9, 2023, Dec 14, 2020, May 13, 2019 (3 updates tracked since 2019).

About Annessa Du NPPES

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

ANNESSA DU (NPI 1366008633) is an individual optometrist in Loma Linda, California, licensed in California (34372) and active in the NPI registry since May 2019. She is enrolled in Medicare PECOS, maintains a secondary practice location in Long Beach, and is a graduate of University Of California - School Of Optometry (2019).

NPPES Registry Identity

NPI1366008633
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameANNESSA DU
Location Address11346 MOUNTAIN VIEW AVE STE BLoma Linda, CA 92354-3833
Mailing Address7711 Melrose AveRosemead, CA 91770-3075 · (626) 696-6961
Phone(909) 796-0101
Sole ProprietorNo
Medical School CMSUniversity Of California - School Of OptometryGraduated 2019
Enumeration DateMay 13, 2019
Last NPPES UpdateJanuary 9, 20233 updates tracked since enumeration
NPPES CertifiedJanuary 9, 2023
✔ NPI 1366008633 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 · 34372
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.
11346 MOUNTAIN VIEW AVE STE B, Loma Linda, CA 92354
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Secondary Practice Location 1

Location 15901 E 7th StLong Beach, CA 90822-5201 · Phone (844) 808-2020

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Annessa Du 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 ID3274956172
PECOS Enrollment IDI20200710002108
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 Annessa Du reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Annessa Du, O.D., A Professional Corporation
Same address
Optometrist
11346 MOUNTAIN VIEW AVE STE B
Loma Linda, CA 92354
  • Reassigned Medicare billing, California enrollment
  • 3 clinicians in this Medicare group
NPI 1194430074 (909) 796-0101

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 7

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.
112 services106 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.
95 services95 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.
25 services19 patients
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.
23 services13 patients
New patient complete exam of visual system 92004
A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.
22 services22 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92354 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$74.08 typical visit price
range $19.37 – $146.42
Typical copayment $18.52 (range $4.84 – $36.60)
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 2

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

ANNESSA DU, O.D., A PROFESSIONAL CORPORATION
Optometrist
11346 MOUNTAIN VIEW AVE STE B
LOMA LINDA, CA 92354
San Bernardino County (909) 796-0101
DONALD E. SHEARER M.D., INC.
Ophthalmology
11346 MOUNTAIN VIEW AVE STE B
LOMA LINDA, CA 92354
San Bernardino County (909) 796-0101

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 Annessa Du's NPI number?

The NPI number for Annessa Du is 1366008633. It was assigned to this individual provider in the NPPES registry on May 13, 2019.

Where is Annessa Du located?

Annessa Du practices at 11346 Mountain View Ave Ste B, Loma Linda, CA 92354. The listed phone number is (909) 796-0101.

What is Annessa Du's specialty?

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

Is Annessa Du enrolled in Medicare?

Yes. Annessa Du 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.

Which organization bills Medicare for Annessa Du's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Annessa Du reassigns Medicare benefits to Annessa Du, O.D., A Professional Corporation (Loma Linda, 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 Annessa Du's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Annessa Du accept?

Health plans from Anthem Blue Cross and Blue Shield and Providence Health Plan list Annessa Du as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Annessa Du was last updated on January 9, 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.