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DR. RALPH SIMON BAKER O.D.
NPI 1861430043
Optometrist in Roseville, CA

Active since June 02, 2006PECOS Enrolled
9221 SIERRA COLLEGE BLVD STE 130, ROSEVILLE, CA 95661(916) 797-6747(916) 797-6728 Get Directions Write a Review

NPPES record last updated: November 7, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Ralph Simon Baker O.d. NPPES

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

DR. RALPH SIMON BAKER O.D. (NPI 1861430043) is an individual optometrist in Roseville, California, licensed in California (8662T) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1987).

NPPES Registry Identity

NPI1861430043
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. RALPH SIMON BAKERCredential: O.D.
Location Address9221 SIERRA COLLEGE BLVD STE 130Roseville, CA 95661-5919
Mailing Address9221 Sierra College Blvd Ste 130Roseville, CA 95661-5919 · (916) 797-6747 · Fax (916) 797-6728
Phone(916) 797-6747
Fax(916) 797-6728
Sole ProprietorNo
Medical School CMSOtherGraduated 1987
Enumeration DateJune 2, 2006
Last NPPES UpdateNovember 7, 2023
NPPES CertifiedNovember 6, 2023
✔ NPI 1861430043 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 · 8662T
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.
9221 SIERRA COLLEGE BLVD STE 130, Roseville, CA 95661
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Other Identifiers 1

MedicaidSD0086620CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Ralph Simon Baker O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7315991494
PECOS Enrollment IDI20050316001039
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

2

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

Granite Pointe Eye Care, Inc., An Optometric Corporation
Same address
Optometrist
9221 SIERRA COLLEGE BLVD, SUITE 130
Roseville, CA 95661
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Granite Pointe Eye Care Inc
  • 10 clinicians in this Medicare group
NPI 1538245162 (916) 797-6747
Melody O. Quenzer, O.D., Inc.
11 mi
Optometrist
100 GATEWAY DR STE 130
Lincoln, CA 95648
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Melody O Quenzer Od Inc
  • 6 clinicians in this Medicare group
NPI 1295999233 (916) 434-6225

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 5

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 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.
61 services61 patients
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.
61 services56 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.
32 services22 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.
28 services28 patients
Exam of visual field with extended testing 92083
An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95661 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
$137.20 typical visit price
range $60.44 – $180.85
Typical copayment $34.30 (range $15.11 – $45.21)
Most-billed visit code 99204
Established Patient
$75.03 typical visit price
range $19.88 – $148.15
Typical copayment $18.75 (range $4.97 – $37.03)
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 4

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

KIRAN GILL OD
Optometrist
9221 SIERRA COLLEGE BLVD STE 130
ROSEVILLE, CA 95661
Placer County (916) 797-6747
SUSANNA S. TAN OD
Optometrist
9221 SIERRA COLLEGE BLVD STE 130
ROSEVILLE, CA 95661
Placer County (916) 797-6747
ALYSSA AKIMI MATSUO OD
Optometrist
9221 SIERRA COLLEGE BLVD STE 130
ROSEVILLE, CA 95661
Placer County (916) 797-6747
RANDALL F FUERST O.D.
Optometrist
9221 SIERRA COLLEGE BLVD STE 130
ROSEVILLE, CA 95661
Placer County (916) 797-6747

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 Ralph Baker's NPI number?

The NPI number for Ralph Baker is 1861430043. It was assigned to this individual provider in the NPPES registry on June 2, 2006.

Where is Ralph Baker located?

Ralph Baker practices at 9221 Sierra College Blvd Ste 130, Roseville, CA 95661. The listed phone number is (916) 797-6747.

What is Ralph Baker's specialty?

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

Is Ralph Baker enrolled in Medicare?

Yes. Ralph Baker is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ralph Baker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ralph Baker reassigns Medicare benefits to 2 organizations: Granite Pointe Eye Care, Inc., An Optometric Corporation (Roseville, CA) and Melody O. Quenzer, O.D., Inc. (Lincoln, 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 Ralph Baker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ralph Baker accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and BlueCross BlueShield of Tennessee and 1 other insurer list Ralph Baker 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 Ralph Baker was last updated on November 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.