DR. GREGORY DAVID LOPEZ MD
NPI 1366754699
Orthopaedic Surgery - Orthopaedic Surgery of the Spine in Chicago, IL

Q: What is Gregory Lopez's NPI number?

The NPI number for Gregory Lopez is 1366754699. It was assigned to this individual provider in the NPPES registry on July 1, 2010.

Q: What is Gregory Lopez's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Surgery of the Spine, with taxonomy code 207XS0117X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Lopez was last updated on January 9, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 July 01, 2010PECOS EnrolledAccepts Medicare Assignment

1611 W HARRISON ST, STE 300, CHICAGO, IL 60612(708) 236-2600 Get Directions Write a Review

NPPES record last updated: January 9, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Gregory David Lopez Md NPPES

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

DR. GREGORY DAVID LOPEZ MD (NPI 1366754699) is an individual orthopaedic surgery of the spine provider in Chicago, Illinois, licensed in Illinois (036137855) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of University Of Texas Medical School At San Antonio (2010).

NPPES Registry Identity

NPI1366754699

Entity TypeIndividualMale

Primary Taxonomy207XS0117X

Provider Legal NameDR. GREGORY DAVID LOPEZCredential: MD

Location Address1611 W HARRISON ST, STE 300Chicago, IL 60612-4861

Mailing Address1 Westbrook Corporate Ctr, Ste 240Westchester, IL 60154-5701 · (708) 236-2600

Phone(708) 236-2600

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2010

Enumeration DateJuly 1, 2010

Last NPPES UpdateJanuary 9, 2017

✔ NPI 1366754699 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic Surgery · Orthopaedic Surgery of the SpineAllopathic & Osteopathic Physicians

Taxonomy Code207XS0117X

License✔ Licensed in IL · 036137855

Definition

Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic surgeons of the spine deal with the evaluation and nonoperative and operative treatment of the full spectrum of primary spinal disorders including trauma, degenerative, deformity, tumor, and reconstructive.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1611 W HARRISON ST, Chicago, IL 60612

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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

Dr. Gregory David Lopez 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 ID6800039116

PECOS Enrollment IDI20160804002402

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 Gregory Lopez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Midwest Orthopaedics At Rush, LLC

Same address

Orthopaedic Surgery

1611 W HARRISON ST, # 400
Chicago, IL 60612

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

NPI 1811942451 (312) 432-2300

Orthomidwest, PLLC

74 mi

Orthopaedic Surgery

324 ROXBURY RD
Rockford, IL 61107

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

NPI 1730136474 (815) 398-9491

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 32

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 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.

508 services366 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

380 services56 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

373 services241 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.

293 services289 patients

Mri scan of lower spinal canal without contrast 72148

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

213 services200 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

213 services213 patients

Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment 63047

This procedure involves removing part of a spine bone to alleviate pressure on the lower spinal cord and/or nerves. It targets a single segment of the spine, improving mobility and reducing pain. It's a common treatment for conditions like herniated discs or spinal stenosis.

119 services115 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

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.

104 services99 patients

Fusion of spine in lower back 22612

Fusion of the spine in the lower back, also known as lumbar spinal fusion, is a surgery aimed to join, or fuse, two or more vertebrae in your lower back. This procedure can help alleviate pain and improve stability by reducing movement between the vertebrae.

102 services100 patients

X-ray of upper spine, 4-5 views 72050

An X-ray of the upper spine with 4-5 views is a non-invasive imaging test. It uses radiation to capture detailed images of the bones and structures in your neck and upper back. This procedure helps identify issues like fractures, infections, or deformities.

86 services86 patients

Insertion of cage or mesh device to spine bone and disc space during spine fusion 22853

Spine fusion is a procedure to join two or more vertebrae. During this process, a cage or mesh device is inserted into the spine bone and disc space. This helps to stabilize the spine, reduce pain, and improve functionality. The device acts as a bridge for new bone to grow on.

76 services54 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

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.

76 services76 patients

X-ray of upper spine, 2-3 views 72040

An X-ray of the upper spine, with 2-3 views, is a painless procedure that employs a small amount of radiation to capture images of your neck and upper back. It assists in diagnosing conditions like arthritis, fractures, or spinal deformities.

72 services48 patients

Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment 63048

This procedure involves the partial removal of a bone in your spine to alleviate pressure on your spinal cord or nerves. It may be performed on multiple spine segments depending on your condition. The aim is to improve mobility and reduce pain or discomfort.

71 services52 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level 64483

This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.

59 services40 patients

Placement of stabilizing device to back of 1 spine bone in neck 22840

This procedure involves positioning a stabilizing device onto a single spinal bone in the neck. The goal is to provide support and prevent movement that could cause discomfort or further injury. It's performed by trained specialists under anesthesia.

58 services58 patients

Mri scan of upper spinal canal without contrast 72141

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

58 services56 patients

Fusion of additional segment of spine 22614

Fusion of an additional segment of the spine is a surgical procedure to join two or more vertebrae together. This is done to stabilize the spine and reduce pain or correct a deformity. The procedure involves using bone grafts, rods, or screws to secure the spine.

47 services33 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

47 services43 patients

Incision or removal of lower spine bone segment 22214

This procedure involves making a small incision in the lower back to access the spine. A segment of bone may be removed to relieve pressure on nerves, improve mobility, or treat conditions like herniated discs or spinal stenosis. Recovery varies, but physical therapy may follow.

40 services40 patients

Fusion of lower spine bone through abdomen with partial removal of disc 22558

This procedure involves merging the bones in your lower spine through an abdominal approach. A portion of the disc, which acts like a cushion between your vertebrae, is partially removed. The goal is to alleviate back pain by limiting movement in the problem area of your spine.

37 services36 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.

24 services24 patients

Partial removal of spine bone with release of lower spinal cord or nerves and/or removal of disc 63030

This procedure involves partially removing a spine bone, which may help to alleviate pressure on the lower spinal cord or nerves. It can also include disc removal. This can reduce pain and improve mobility. It's a common treatment for certain back conditions.

23 services21 patients

Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance 27096

This procedure involves injecting medicine into the joint where your lower spine meets your hip bone. Using special imaging technology, the doctor ensures the medicine is delivered accurately. This can help reduce pain and inflammation in that area.

22 services17 patients

X-ray of hip, minimum of 4 views 73503

An X-ray of the hip with a minimum of 4 views is a non-invasive procedure that uses a small amount of radiation to produce images of the hip joint from different angles. This helps to diagnose conditions such as fractures, arthritis, or other abnormalities. It's a quick, painless process.

22 services21 patients

Placement of stabilizing device to back, 3-6 spine bone segments 22842

This procedure involves placing a device on your back to stabilize 3-6 spine bone segments. It aids in maintaining spine alignment and reducing pain. The device is secured to the bones, providing support and promoting healing.

20 services20 patients

X-ray of middle spine, 2 views 72070

An X-ray of the middle spine, or thoracic spine, involves capturing two different images of the area. This non-invasive procedure uses small amounts of radiation to visualize the bones and tissues in your back, helping to identify any abnormalities or injuries.

20 services16 patients

Placement of stabilizing device to front, 2-3 spine bone segments 22845

This procedure involves positioning a stabilizing device on the front of 2-3 segments of your spine. It's designed to provide support and stability to your spine, potentially alleviating discomfort and improving mobility.

17 services17 patients

Ct scan of lower spine without contrast 72131

A CT scan of the lower spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed images of your lower back area, helping to detect conditions like fractures, infections, or tumors. It's painless and generally quick.

16 services16 patients

Mri scan of middle spinal canal without contrast 72146

An MRI scan of the middle spinal canal without contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. This helps doctors identify any abnormalities or issues in your spinal canal. No dye is used in this procedure.

16 services15 patients

Fusion of spine bones through front of body with partial removal of disc, each additional disc 22585

This procedure involves merging spine bones via the front of the body. A portion of each additional disc is removed to ease pressure and discomfort. This helps to stabilize the spine and improve mobility.

14 services11 patients

Removal of upper spine bone with release of spinal cord and/or nerves, anterior approach, single segment 63081

This procedure involves removing a portion of bone from your upper spine through an anterior (front) approach to alleviate pressure on your spinal cord or nerves. It focuses on a single segment of the spine. This can help reduce pain and improve function.

14 services14 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140010

Location2650 Ridge AveEvanston, IL 60201 · Cook County

Emergency services Birthing friendly

Adventist La Grange Memorial Hospital

Acute Care Hospitals · La Grange, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140065

Location5101 S Willow Springs RdLa Grange, IL 60525 · Cook County

Emergency services

Rush University Medical Center

Acute Care Hospitals · Chicago, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140119

Location1653 West Congress ParkwayChicago, IL 60612 · Cook County

Emergency services Birthing friendly

Elmhurst Memorial Hospital

Acute Care Hospitals · Elmhurst, IL

4/5 CMS rating

OwnershipProprietary

CMS Certification Number140200

Location155 East Brush Hill RoadElmhurst, IL 60126 · Du Page County

Emergency services Birthing friendly

Edward Hospital

Acute Care Hospitals · Naperville, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140231

Location801 South WashingtonNaperville, IL 60540 · Du Page County

Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Perioperative Care: Selection of Prophylactic Antibiotic - First OR Second Generation Cephalosporin

Percentage of surgical patients aged 18 years and older undergoing procedures with the indications for a first OR second generation cephalosporin prophylactic antibiotic, who had an order for a first OR second generation cephalosporin for antimicrobial…

100%76 patients

Perioperative Care: Venous Thromboembolism (VTE) Prophylaxis (When Indicated in ALL Patients)

Percentage of surgical patients aged 18 years and older undergoing procedures for which venous thromboembolism (VTE) prophylaxis is indicated in all patients, who had an order for Low Molecular Weight Heparin (LMWH), Low- Dose Unfractionated Heparin (LDUH)…

100%75 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Osteogenesis stimulator, electrical, non-invasive, spinal applications E0748

DME-Other DME · category DE000N

1 supplier11 claims11 services$3,742.25 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

DR. FRANK M. PHILLIPS M.D.

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

1611 W HARRISON ST, STE 400
CHICAGO, IL 60612

Cook County (312) 243-4244

GEORGE KOURIS MD SC

Plastic Surgery

1611 W HARRISON ST, 212
CHICAGO, IL 60612

Cook County (312) 432-2850

EMILY N STOUFFER NP-C

Nurse Practitioner

1611 W HARRISON ST, SUITE 400
CHICAGO, IL 60612

Cook County (312) 243-4244

EMILY REESON MD

Orthopaedic Surgery

1611 W HARRISON ST
CHICAGO, IL 60612

Cook County (815) 576-2046

DR. JEFFREY M MJAANES MD

Pediatrics (Sports Medicine)

1611 W HARRISON ST, STE 400
CHICAGO, IL 60612

Cook County (312) 243-4244

ASHLEY SCHULTEJANN ATC

Specialist/Technologist (Athletic Trainer)

1611 W HARRISON ST, SUITE 300
CHICAGO, IL 60612

Cook County (312) 432-2432

PAIGE MAHER PA-C

Physician Assistant

1611 W HARRISON ST, STE 300
CHICAGO, IL 60612

Cook County (312) 432-2381

RUSH OTOLARYNGOLOGY HEAD AND NECK SURGERY

Otolaryngology

1611 W HARRISON ST, SUITE 550
CHICAGO, IL 60612

Cook County (312) 942-6100

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 Gregory Lopez's NPI number?

The NPI number for Gregory Lopez is 1366754699. It was assigned to this individual provider in the NPPES registry on July 1, 2010.

Where is Gregory Lopez located?

Gregory Lopez practices at 1611 W Harrison St Ste 300, Chicago, IL 60612. The listed phone number is (708) 236-2600.

What is Gregory Lopez's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Surgery of the Spine, with taxonomy code 207XS0117X.

Is Gregory Lopez enrolled in Medicare?

Yes. Gregory Lopez 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 organizations bill Medicare for Gregory Lopez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Lopez reassigns Medicare benefits to 2 organizations: Midwest Orthopaedics At Rush, LLC (Chicago, IL) and Orthomidwest, PLLC (Rockford, 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 Gregory Lopez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Lopez accept?

Health plans from Oscar Health list Gregory Lopez 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.

Is Gregory Lopez affiliated with any hospitals?

According to CMS data, Gregory Lopez is affiliated with Northshore University Healthsystem - Evanston Hospital, Adventist La Grange Memorial Hospital, Rush University Medical Center, Elmhurst Memorial Hospital and Edward Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Lopez was last updated on January 9, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.