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DR. RANJANA CHAUHAN MD
NPI 1093766594
Ophthalmology in Hinsdale, IL

Active since May 12, 2006PECOS EnrolledAccepts Medicare Assignment
908 N ELM ST STE 104, HINSDALE, IL 60521(630) 322-8300 Get Directions Write a Review

NPPES record last updated: August 4, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 23, 2021, Sep 5, 2018 (2 updates tracked since 2018).

About Dr. Ranjana Chauhan Md NPPES

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

DR. RANJANA CHAUHAN MD (NPI 1093766594) is an individual ophthalmology provider in Hinsdale, Illinois, licensed in Illinois (036147377) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of Northeastern Ohio University College Of Medicine (1999).

NPPES Registry Identity

NPI1093766594
Entity TypeIndividualFemale
Primary Taxonomy207W00000X
Provider Legal NameDR. RANJANA CHAUHANCredential: MD
Location Address908 N ELM ST STE 104Hinsdale, IL 60521-3687
Mailing AddressPo Box 713260Chicago, IL 60677-1260 · (630) 469-9200
Phone(630) 322-8300
Sole ProprietorNo
Medical School CMSNortheastern Ohio University College Of MedicineGraduated 1999
Enumeration DateMay 12, 2006
Last NPPES UpdateAugust 4, 20232 updates tracked since enumeration
NPPES CertifiedAugust 4, 2023
✔ NPI 1093766594 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
Licenses✔ Licensed in IL · 036147377✔ Licensed in OR · MD26191✔ Licensed in WA · MD00045761
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
908 N ELM ST STE 104, Hinsdale, IL 60521
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Other Identifiers 2

Medicaid271005OR
Medicaid271053OR

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

Dr. Ranjana Chauhan Md 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 ID8022033737
PECOS Enrollment IDI20180924000203
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 Ranjana Chauhan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Dupage Medical Group Ltd
4.7 mi
Multi-Specialty
1100 W 31ST ST, STE 300
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 1,061 clinicians in this Medicare group
NPI 1801833983 (630) 469-9200

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 11

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.
172 services164 patients
Established patient problem focused exam of visual system 92012
This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.
146 services95 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.
65 services65 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.
51 services51 patients
Imaging of retina 92134
Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.
44 services43 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).
42 services41 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60521 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
$137.43 typical visit price
range $59.81 – $181.38
Typical copayment $34.35 (range $14.95 – $45.34)
Most-billed visit code 99204
Established Patient
$74.38 typical visit price
range $19.15 – $147.12
Typical copayment $18.59 (range $4.78 – $36.78)
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.

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 Ranjana Chauhan's NPI number?

The NPI number for Ranjana Chauhan is 1093766594. It was assigned to this individual provider in the NPPES registry on May 12, 2006.

Where is Ranjana Chauhan located?

Ranjana Chauhan practices at 908 N Elm St Ste 104, Hinsdale, IL 60521. The listed phone number is (630) 322-8300.

What is Ranjana Chauhan's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Ranjana Chauhan enrolled in Medicare?

Yes. Ranjana Chauhan 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 Ranjana Chauhan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ranjana Chauhan reassigns Medicare benefits to Dupage Medical Group Ltd (Downers Grove, IL). 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 Ranjana Chauhan'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 Ranjana Chauhan was last updated on August 4, 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.