DR. GREGORY P. NICHOLSON M.D.
NPI 1477532141
Orthopaedic Surgery - Sports Medicine in Chicago, IL

Q: What is Gregory Nicholson's NPI number?

The NPI number for Gregory Nicholson is 1477532141. It was assigned to this individual provider in the NPPES registry on January 11, 2006.

Q: What is Gregory Nicholson's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Sports Medicine, with taxonomy code 207XX0005X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Nicholson was last updated on September 18, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 January 11, 2006PECOS EnrolledAccepts Medicare Assignment

1611 W HARRISON ST, STE, CHICAGO, IL 60612(312) 243-4244(312) 942-1517 Get Directions Write a Review

NPPES record last updated: September 18, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Gregory P. Nicholson M.d. NPPES

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

DR. GREGORY P. NICHOLSON M.D. (NPI 1477532141) is an individual sports medicine provider in Chicago, Illinois, licensed in Illinois (036105551) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Rush University Medical Center, and is a graduate of Indiana University School Of Medicine (1986).

NPPES Registry Identity

NPI1477532141

Entity TypeIndividualMale

Primary Taxonomy207XX0005X

Provider Legal NameDR. GREGORY P. NICHOLSONCredential: M.D.

Location Address1611 W HARRISON ST, STEChicago, IL 60612-3841

Mailing Address1 Westbrook Corporate Ctr, #240Westchester, IL 60154-5701

Phone(312) 243-4244

Fax(312) 942-1517

Sole ProprietorNo

Medical School CMSIndiana University School Of MedicineGraduated 1986

Enumeration DateJanuary 11, 2006

Last NPPES UpdateSeptember 18, 2018

✔ NPI 1477532141 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Sports MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207XX0005X

License✔ Licensed in IL · 036105551

Definition

An orthopaedic surgeon trained in sports medicine provides appropriate care for all structures of the musculoskeletal system directly affected by participation in sporting activity. This specialist is proficient in areas including conditioning, training and fitness, athletic performance and the impact of dietary supplements, pharmaceuticals, and nutrition on performance and health, coordination of care within the team setting utilizing other health care professionals, field evaluation and management, soft tissue biomechanics and injury healing and repair. Knowledge and understanding of the principles and techniques of rehabilitation, athletic equipment and orthotic devices enables the specialist to prevent and manage athletic injuries.

1611 W HARRISON ST, Chicago, IL 60612

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Other Identifiers 6

Other1633878IL · Bcbs Provider Number

Other207067IL · Medicare Ptan Locality #16

Other207073IL · Medicare Ptan Locality #15

OtherP00065134IL · Rr Medicare Provider Number

OtherDA4902IL · Rr Medicare Ptan Number

Other4247771IL · Aetna Provider Number

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 P. Nicholson M.d. 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 ID749193696

PECOS Enrollment IDI20040910000742, I20161024000287

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 Nicholson 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 and Indiana enrollments
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 and Indiana enrollments
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 12

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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

1,221 services129 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

829 services456 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.

372 services275 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.

343 services273 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.

194 services194 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

156 services125 patients

Prosthetic repair of shoulder joint, total shoulder 23472

Total shoulder prosthetic repair is a surgical procedure to replace a damaged shoulder joint with artificial components. It aims to relieve pain and restore mobility. The procedure involves replacing the ball (humeral head) and socket (glenoid) of the shoulder joint.

90 services88 patients

Mri scan of arm joint without contrast 73221

An MRI scan of the arm joint is a non-invasive imaging procedure that uses magnetic fields and radio waves to create detailed images of the structures within your arm joint. No contrast dye is used in this process. It helps to diagnose or monitor conditions like arthritis, injuries, or infections.

47 services43 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.

38 services38 patients

X-ray of elbow, minimum of 3 views 73080

An elbow X-ray with a minimum of 3 views is a non-invasive imaging test. It helps visualize the bones of the elbow from different angles. This aids in diagnosing conditions like fractures or arthritis. The procedure is quick, painless, and usually takes around 15 minutes.

18 services12 patients

Ct scan of arm without contrast 73200

A CT scan of the arm without contrast is a non-invasive imaging test. It uses X-ray technology to capture detailed images of your arm's structures. It doesn't involve any contrasting dye, hence, minimal preparation is required. It helps in diagnosing injuries or conditions affecting the arm.

16 services16 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.

16 services16 patients

Hospital Affiliations CMS Care Compare 2

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

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

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%111 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.

Shoulder orthosis, acromio/clavicular (canvas and webbing type), prefabricated, off-the-shelf L3670

DME-Orthotic Devices · category DF000N

2 suppliers16 claims16 services$86.07 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 Nicholson's NPI number?

The NPI number for Gregory Nicholson is 1477532141. It was assigned to this individual provider in the NPPES registry on January 11, 2006.

Where is Gregory Nicholson located?

Gregory Nicholson practices at 1611 W Harrison St Ste, Chicago, IL 60612. The listed phone number is (312) 243-4244.

What is Gregory Nicholson's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Sports Medicine, with taxonomy code 207XX0005X.

Is Gregory Nicholson enrolled in Medicare?

Yes. Gregory Nicholson 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 Nicholson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Nicholson 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 Nicholson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Gregory Nicholson affiliated with any hospitals?

According to CMS data, Gregory Nicholson is affiliated with Rush University Medical Center and Edward Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Nicholson was last updated on September 18, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.