DR. DILRAJ S GREWAL MD
NPI 1437460656
Ophthalmology in Chicago, IL

NPI Status: Active since June 23, 2010

Contact Information

645 N MICHIGAN AVE STE 440
NORTHWESTERN MEMORIAL HOSPITAL
CHICAGO, IL
ZIP 60611
Phone: (312) 503-7975

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  • Individual
  • Male
  • Years of Experience 20
  • Ophthalmology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About DILRAJ GREWAL

This page provides the complete NPI Profile along with additional information for Dilraj Grewal, a provider established in Chicago, Illinois with a medical specialization in Ophthalmology and more than 20 years of experience. The healthcare provider is registered in the NPI registry with number 1437460656 assigned on June 2010. The practitioner's primary taxonomy code is 207W00000X with license number 125-058261 (IL). The provider is registered as an individual and his NPI record was last updated 12 years ago.

NPI
1437460656
Provider Name
DR. DILRAJ S GREWAL MD
Gender
Male
Entity Type
Individual
Location Address
645 N MICHIGAN AVE STE 440 NORTHWESTERN MEMORIAL HOSPITAL CHICAGO, IL 60611
Location Phone
(312) 503-7975
Mailing Address
645 N MICHIGAN AVE STE 440 NORTHWESTERN MEMORIAL HOSPITAL CHICAGO, IL 60611
Mailing Phone
(312) 503-7975
Medical School Name
OTHER
Graduation Year
2006
Is Sole Proprietor?
Yes
Enumeration Date
06-23-2010
Last Update Date
01-10-2014
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Ophthalmologists like Dilraj Grewal specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
125-058261
License State
IL
Taxonomy Description
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.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Bronze 2 Advanced HSA: Aetna network + MinuteClinic + Virtual Primary Care - HMO
  • Bronze 4 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
  • Bronze 4 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + Adult Dental + Vision - HMO
  • Bronze S: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
  • Gold 10 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
  • Gold 10 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + Adult Dental + Vision - HMO
  • Gold 3 Advanced: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
  • Gold 3 Advanced: Aetna network + $0 MinuteClinic + Adult Dental + Vision - HMO
  • Gold S: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
  • Silver 10 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
  • Clear Silver - HMO
  • Elite Bronze - HMO
  • Elite Bronze + Vision + Adult Dental - HMO
  • Elite Gold - HMO
  • Elite Gold + Vision + Adult Dental - HMO
  • Everyday Bronze - HMO
  • Everyday Bronze + Vision + Adult Dental - HMO
  • Everyday Gold - HMO
  • Everyday Gold + Vision + Adult Dental - HMO
  • Focused Silver - HMO
  • Clear Silver with $0 Insulin Options - HMO
  • Complete Gold - HMO
  • Complete Gold + Vision + Adult Dental - HMO
  • Complete Gold with Atrium Health - HMO
  • Complete Gold with Atrium Health + Vision + Adult Dental - HMO
  • Complete Silver with Atrium Health - HMO
  • Complete Silver with Atrium Health + Vision + Adult Dental - HMO
  • Elite Bronze - HMO
  • Elite Bronze + Vision + Adult Dental - HMO
  • Elite Bronze with Atrium Health - HMO
  • Clear Silver - EPO
  • Elite Bronze - EPO
  • Elite Bronze + Vision + Adult Dental - EPO
  • Elite Gold - EPO
  • Elite Gold + Vision + Adult Dental - EPO
  • Enhanced Diabetes Care Silver with $0 Drug Options - EPO
  • Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - EPO
  • Everyday Bronze - EPO
  • Everyday Bronze + Vision + Adult Dental - EPO
  • Everyday Gold - EPO
  • Blue Advantage Bronze Basic | 3 Free PCP | $20 Tier 1 Rx | Integrated | Nationwide Doctors - PPO
  • Blue Advantage Bronze Complete | $60 PCP | $20 Tier 1 Rx | Nationwide Doctors - PPO
  • Blue Advantage Bronze Standard | Nationwide Doctors - PPO
  • Blue Advantage Gold Premier | 3 Free PCP | $10 Tier 1 Rx | Nationwide Doctors - PPO
  • Blue Advantage Gold Standard | Nationwide Doctors - PPO
  • Blue Advantage Silver Choice | 3 Free PCP | $15 Tier 1 Rx | Nationwide Doctors - PPO
  • Blue Advantage Silver Preferred | 3 Free PCP | $10 Tier 1 Rx | Integrated | Nationwide Doctors - PPO
  • Blue Advantage Silver Standard | Nationwide Doctors - PPO
  • Blue Care Bronze Standard | Statewide Doctors - HMO
  • Blue Care Gold Standard | Statewide Doctors - HMO
  • Connect Bronze 5500 Indiv Med Deductible - HMO
  • Connect Bronze 6500 Indiv Med Deductible - HMO
  • Connect Bronze CMS Standard - HMO
  • Connect Gold CMS Standard - HMO
  • Connect Silver 3500 Indiv Med Deductible - HMO
  • Connect Silver 4400 Indiv Med Deductible - HMO
  • Connect Silver CMS Standard - HMO
  • Standard Expanded Bronze WellCare - PPO
  • Standard Gold WellCare - PPO
  • Standard Silver WellCare - PPO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

Dilraj Grewal is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Dilraj Grewal is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 6709001456

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20140714000675

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

2d ultrasound scan of eye tissue and structures

A 2D ultrasound scan of eye tissue and structures is a non-invasive procedure that uses sound waves to create images of your eye. It helps doctors to examine your eye's internal structures, detect abnormalities, and plan for treatments if needed.

This service was performed 69 times for 41 patients

Cataract surgery

Cataract surgery is a procedure to remove the lens of your eye when it becomes cloudy, which is called a cataract. A synthetic lens is then inserted to restore clear vision. The operation is typically done on an outpatient basis and is very safe and effective.

This service was performed for 38 patients

Established patient complete exam of visual system

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.

This service was performed 1,196 times for 788 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 592 times for 291 patients

Exam of retinal blood vessels using a special camera after injection of a dye

This procedure, known as a fluorescein angiography, involves taking images of the back of your eye. A dye is injected into your arm that travels to your eye, highlighting the blood vessels in your retina. This helps identify any abnormalities.

This service was performed 66 times for 57 patients

Exam of visual field with extended testing

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.

This service was performed 14 times for 13 patients

Extended exam of the back part of the eye with retinal drawing

This procedure involves a detailed examination of the back part of your eye, including the retina. It helps identify any abnormalities or issues. A retinal drawing is made to record findings. It's non-invasive and crucial for maintaining eye health.

This service was performed 561 times for 494 patients

Imaging of retina

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.

This service was performed 2,005 times for 1,004 patients

Injection of drug into eye

An injection into the eye is a procedure where a medication is delivered directly into your eye to treat various conditions. A local anesthetic is applied to numb the eye, ensuring minimal discomfort. The drug helps manage diseases like macular degeneration or diabetic retinopathy.

This service was performed 122 times for 55 patients

Injection of drug into eye

An injection into the eye is a procedure where a medication is delivered directly into your eye to treat various conditions. A local anesthetic is applied to numb the eye, ensuring minimal discomfort. The drug helps manage diseases like macular degeneration or diabetic retinopathy.

This service was performed 578 times for 164 patients

Injection, aflibercept, 1 mg

Aflibercept injection is a treatment for certain eye conditions that affect vision. It works by blocking abnormal blood vessel growth and leakage in the eye, which can cause vision loss. The medication is administered directly into the eye by a healthcare professional.

This service was performed 796 times for 85 patients

Injection, bevacizumab, 10 mg

Bevacizumab is a medication given through an injection. It's designed to prevent the growth of new blood vessels that cancer cells need to grow and spread. The 10 mg dose refers to the amount of the drug in the injection.

This service was performed 159 times for 61 patients

Injection, dexamethasone, intravitreal implant, 0.1 mg

This procedure involves placing a tiny implant into your eye. This implant slowly releases a medication called dexamethasone, which helps to reduce inflammation and swelling in the eye, improving vision and comfort.

This service was performed 315 times for 25 patients

Injection, faricimab-svoa, 0.1 mg

Faricimab-svoa is a medication given through an injection into the eye to treat certain eye conditions. The 0.1 mg dosage helps control disease progression, improving vision and eye health. The procedure is done by a healthcare professional.

This service was performed 1,272 times for 19 patients

New patient complete exam of visual system

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.

This service was performed 67 times for 67 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 64 times for 64 patients

Photography of the retina

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.

This service was performed 48 times for 38 patients

Removal of recurring cataract in lens capsule using a laser

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

This service was performed 12 times for 11 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $34.71 for a new patient copayment and $18.7 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 60611 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $138.86
  • Minimum New Patient Price $60.08
  • Maximum New Patient Price $183.39
  • Average New Patient Copayment $34.71
  • Minimum New Patient Copayment $15.02
  • Maximum New Patient Copayment $45.84

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $74.8
  • Minimum Established Patient Price $18.97
  • Maximum Established Patient Price $148.12
  • Average Established Patient Copayment $18.7
  • Minimum Established Patient Copayment $4.74
  • Maximum Established Patient Copayment $37.03

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Dilraj Grewal is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
DUKE UNIVERSITY HOSPITAL2100 ERWIN RD
DURHAM, NC 27705
(919) 684-8111Acute Care Hospitals

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1437460656
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2467860610
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 4 + 6 + 7 + 8 + 6 + 0 + 6 + 1 + 0 + 24 = 64
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 64 = 66

The NPI number 1437460656 is valid because the calculated check digit 6 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 4 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1154656577 CAMILLE PALMA M.D.
Individual
Ophthalmology645 N MICHIGAN AVE STE 440
CHICAGO, IL 60611
(312) 503-8152
1851479422 JEFFREY C. LIU MD
Individual
Ophthalmology645 N MICHIGAN AVE STE 440
CHICAGO, IL 60611
(312) 503-3649
1831552272DR. HONG-GAM LE M.D.
Individual
Ophthalmology645 N MICHIGAN AVE STE 440
CHICAGO, IL 60611
(312) 908-8152
1841720729DR. TONY YUAN-TING CHEN MD
Individual
Ophthalmology645 N MICHIGAN AVE STE 440
CHICAGO, IL 60611
(312) 503-3649

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1437460656, enumerated in the NPI registry as an "individual" on June 23, 2010

The provider is located at 645 N Michigan Ave Ste 440 Northwestern Memorial Hospital Chicago, Il 60611 and the phone number is (312) 503-7975

The provider's speciality is Ophthalmology with taxonomy code 207W00000X

The provider has more than 20 years of experience.

The provider might be accepting Accepts: Aetna CVS Health, Ambetter from Absolute Total. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

Medicare beneficiaries should expect a typical cost of $138.86 with an average copayment of $34.71 for new patient appointments. Established patients should expect a typical charge of $74.8 and an average copayment of 18.7. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: 2d ultrasound scan of eye tissue and structures, Cataract surgery, Established patient complete exam of visual system, Established patient office or other outpatient visit, 30-39 minutes, Exam of retinal blood vessels using a special camera after injection of a dye, Exam of visual field with extended testing, Extended exam of the back part of the eye with retinal drawing, Imaging of retina, Injection of drug into eye, Injection of drug into eye, Injection, aflibercept, 1 mg, Injection, bevacizumab, 10 mg, Injection, dexamethasone, intravitreal implant, 0.1 mg, Injection, faricimab-svoa, 0.1 mg, New patient complete exam of visual system, New patient office or other outpatient visit, 45-59 minutes, Photography of the retina and Removal of recurring cataract in lens capsule using a laser.

The practitioner is affiliated to the following hospital(s): DUKE UNIVERSITY HOSPITAL. Hospital affiliations are identified through self-reporting data and service claims based on the place of service.

This NPI record was last updated on June 23, 2010. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.