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DR. JOHN JOSEPH FREELY JR. M.D.
NPI 1770739161
Anesthesiology in Mchenry, IL

Active since August 18, 2008PECOS EnrolledAccepts Medicare Assignment
4201 W MEDICAL CENTER DR, MCHENRY, IL 60050(815) 344-5000(815) 344-3347 Get Directions Write a Review

NPPES record last updated: November 20, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 20, 2023, Aug 11, 2016, Jun 24, 2016 and 1 more (4 updates tracked since 2015).

About Dr. John Joseph Freely Jr. M.d. NPPES

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

DR. JOHN JOSEPH FREELY JR. M.D. (NPI 1770739161) is an individual anesthesiology provider in Mchenry, Illinois, licensed in Illinois (036123366) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and maintains a secondary practice location in Greenville.

NPPES Registry Identity

NPI1770739161
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. JOHN JOSEPH FREELY JR.Credential: M.D.
Location Address4201 W MEDICAL CENTER DRMchenry, IL 60050-8409
Mailing Address1 Independence Pt Ste 212Greenville, SC 29615-4536 · (864) 797-6308
Phone(815) 344-5000
Fax(815) 344-3347
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateAugust 18, 2008
Last NPPES UpdateNovember 20, 20234 updates tracked since enumeration
NPPES CertifiedNovember 20, 2023
✔ NPI 1770739161 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in IL · 036123366
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedAnesthesiology · Pediatric AnesthesiologyTaxonomy 207LP3000X · License 32676 (SC)
4201 W MEDICAL CENTER DR, Mchenry, IL 60050
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Secondary Practice Location 1

Location 167 Creekside Park CtGreenville, SC 29615-4810 · Phone (864) 522-3700

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. John Joseph Freely Jr. 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 ID244364453
PECOS Enrollment IDI20221130002251
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

4

Medicare enrollment records show John Freely reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northwestern Medical Faculty Foundation
19 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866
Associated Anesthesiologists, S.C.
128 mi
Anesthesiology
6742 N FROSTWOOD PKWY
Peoria, IL 61615
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Associated Anesthesiologists Sc
  • 337 clinicians in this Medicare group
NPI 1558306480 (309) 692-5393
Greenville Health System
599 mi
General Acute Care Hospital
298 MEMORIAL DR
Seneca, SC 29672
  • Reassigned Medicare billing, South Carolina enrollment
  • 735 clinicians in this Medicare group
NPI 1275941528 (864) 482-3100
Ghs Partners In Health, Inc.
599 mi
Urology
135 PROFESSIONAL PARK DR
Seneca, SC 29678
  • Reassigned Medicare billing, South Carolina enrollment
  • Medicare enrollment name: Prisma Health University Medical Group
  • 3,281 clinicians in this Medicare group
NPI 1457730814 (864) 882-5306

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 6

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.

Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
23 services23 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
21 services20 patients
Anesthesia for x-ray or radiation therapy 01922
Anesthesia for x-ray or radiation therapy involves administering medication to help you relax or sleep during the procedure. It's used to ensure comfort, minimize movement, and reduce anxiety. The type of anesthesia used depends on the procedure and patient's health.
18 services18 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
14 services14 patients
Anesthesia for procedure on small and large bowel using an endoscope 00813
Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.
11 services11 patients
Anesthesia for x-ray on artery of brain, heart, or chest 01926
Anesthesia is given before an x-ray of the brain, heart, or chest artery to ensure comfort and stillness. It helps to eliminate discomfort or pain during the procedure. It's administered by a trained professional, ensuring a safe and smooth procedure.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140116
Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County
Emergency services Birthing friendly

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.

AIGIN HEYDARI MD
Student in an Organized Health Care Education/Training Program
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
DR. KEILLA AMORIM SCHMIDT M.D.
Surgery (Surgical Critical Care)
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4530
CENTEGRA CLINICAL LABORATORIES, LLC
Clinical Medical Laboratory
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4800
DR. CORY EDWARD MELLON MD
Hospitalist
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4323
SAAD AHMAD WARAICH M.D
Internal Medicine
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
SNEHA KUMAR
Internal Medicine
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
DR. SHAWN MARTEN FALITZ M.D.
Anesthesiology
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
ADRIENNE B MEJIA MD MPH
Anesthesiology
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000

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 John Freely's NPI number?

The NPI number for John Freely is 1770739161. It was assigned to this individual provider in the NPPES registry on August 18, 2008.

Where is John Freely located?

John Freely practices at 4201 W Medical Center Dr, Mchenry, IL 60050. The listed phone number is (815) 344-5000.

What is John Freely's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is John Freely enrolled in Medicare?

Yes. John Freely 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 John Freely's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Freely reassigns Medicare benefits to 4 organizations: Northwestern Medical Faculty Foundation (Carol Stream, IL), Associated Anesthesiologists, S.C. (Peoria, IL), Greenville Health System (Seneca, SC) and Ghs Partners In Health, Inc. (Seneca, SC). 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 John Freely's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is John Freely affiliated with any hospitals?

According to CMS data, John Freely is affiliated with Northwestern Medicine Mchenry.

When was this NPI record last updated?

The NPPES record for John Freely was last updated on November 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.