DR. RALPH JOHN GEBERT OD
NPI 1720151152
Optometrist in Chicago, IL

Q: What is Ralph Gebert's NPI number?

The NPI number for Ralph Gebert is 1720151152. It was assigned to this individual provider in the NPPES registry on November 15, 2006.

Q: What is Ralph Gebert'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 Ralph Gebert was last updated on July 9, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 November 15, 2006PECOS Enrolled

3500 W PETERSON AVE, STE 401, CHICAGO, IL 60659(773) 588-3090(773) 588-3210 Get Directions Write a Review

NPPES record last updated: July 9, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Ralph John Gebert Od NPPES

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

DR. RALPH JOHN GEBERT OD (NPI 1720151152) is an individual optometrist in Chicago, Illinois, licensed in Illinois (046007094) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1720151152

Entity TypeIndividualMale

Primary Taxonomy152W00000X

Provider Legal NameDR. RALPH JOHN GEBERTCredential: OD

Location Address3500 W PETERSON AVE, STE 401Chicago, IL 60659

Mailing Address3500 W Peterson Ave, Ste 401Chicago, IL 60659 · (773) 588-3090 · Fax (773) 588-3210

Phone(773) 588-3090

Fax(773) 588-3210

Sole ProprietorNo

Enumeration DateNovember 15, 2006

Last NPPES UpdateJuly 9, 2014

✔ NPI 1720151152 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 IL · 046007094

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.

3500 W PETERSON AVE, Chicago, IL 60659

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Other Identifiers 14

Medicare PINL99901IL

Medicare PINIL7060007

OtherP01107052Railroad Medicare

Medicare UPINT37412

Medicare PINL99899IL

Medicaid0460007094IL

Medicare NSC0839990001

Medicare PINIL7059007

Medicare PINIL7061007

Medicare PINL35082IL

Medicare PINL99903IL

Other0001604768IL · Blue Cross Blue Shield

Other410026724Railroad Medicare

Medicare PINIL7058007

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 Louisiana, Blue Cross and Blue Shield of Montana 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 John Gebert Od 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 Ralph Gebert reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Charles S Ovitsky PC

Same address

Optometrist

3500 W PETERSON AVE, SUITE 401
Chicago, IL 60659

Reassigned Medicare billing, Illinois enrollment
27 clinicians in this Medicare group

NPI 1568647220 (773) 588-3090

The Eye Works, Ltd.

25 mi

Optometrist

820 W IL ROUTE 22
Lake Zurich, IL 60047

Reassigned Medicare billing, Illinois enrollment

NPI 1790974806 (847) 540-1144

Northwest Eye Center

28 mi

Ophthalmology

720 FOX GLEN CT
Barrington, IL 60010

Reassigned Medicare billing, Illinois enrollment
12 clinicians in this Medicare group

NPI 1093898967 (847) 382-3640

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 60659 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

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $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 10

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

JULIE BRUCE O.D.

Optometrist

3500 W PETERSON AVE, SUITE 401
CHICAGO, IL 60659

Cook County (773) 588-3090

HOWARD L BLIVAISS DDS AND ASSOCIATES PC

Clinic/Center (Dental)

3500 W PETERSON AVE, SUITE 200
CHICAGO, IL 60659

Cook County (773) 509-1234

CHARLES S OVITSKY O.D

Optometrist

3500 W PETERSON AVE, SUITE 401
CHICAGO, IL 60659

Cook County (773) 588-3090

CHARLES S OVITSKY PC

Optometrist

3500 W PETERSON AVE, SUITE 401
CHICAGO, IL 60659

Cook County (773) 588-3090

DR. JENNIFER K BULMANN O.D.

Optometrist

3500 W PETERSON AVE, STE 401
CHICAGO, IL 60659

Cook County (773) 588-3090

CHARLES OVITSKY

Optometrist

3500 W PETERSON AVE, SUITE 401
CHICAGO, IL 60659

Cook County (773) 588-3090

RESURRECTION SERVICES

Internal Medicine

3500 W PETERSON AVE, SUITE 300
CHICAGO, IL 60659

Cook County (773) 961-3200

MARIANNA BILIS O.D.

Optometrist

3500 W PETERSON AVE, SUITE 401
CHICAGO, IL 60659

Cook County (773) 588-3090

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 Gebert's NPI number?

The NPI number for Ralph Gebert is 1720151152. It was assigned to this individual provider in the NPPES registry on November 15, 2006.

Where is Ralph Gebert located?

Ralph Gebert practices at 3500 W Peterson Ave Ste 401, Chicago, IL 60659. The listed phone number is (773) 588-3090.

What is Ralph Gebert's specialty?

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

Is Ralph Gebert enrolled in Medicare?

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

Which organizations bill Medicare for Ralph Gebert's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ralph Gebert reassigns Medicare benefits to 3 organizations: Charles S Ovitsky PC (Chicago, IL), The Eye Works, Ltd. (Lake Zurich, IL) and Northwest Eye Center (Barrington, IL). 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 Gebert's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ralph Gebert accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 9 other insurers list Ralph Gebert 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 Gebert was last updated on July 9, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.