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JAMES CHATHAM JR. M.D.
NPI 1629130141
Radiology - Diagnostic Radiology in Rockford, IL

Active since December 14, 2006PECOS EnrolledAccepts Medicare Assignment
8201 E RIVERSIDE BLVD, ROCKFORD, IL 61114(815) 971-7000 Get Directions Write a Review

NPPES record last updated: July 10, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 10, 2025, Mar 2, 2023 (2 updates tracked since 2023).

About James Chatham Jr. M.d. NPPES

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

JAMES CHATHAM JR. M.D. (NPI 1629130141) is an individual diagnostic radiology provider in Rockford, Illinois, licensed in Florida (ME104326) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Thorek Memorial Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1629130141
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameJAMES CHATHAM JR.Credential: M.D.
Location Address8201 E RIVERSIDE BLVDRockford, IL 61114-2300
Mailing Address29624 Network PlChicago, IL 60673-1296 · (608) 756-6278
Phone(815) 971-7000
Sole ProprietorNo
Medical School CMSUniversity Of Florida College Of MedicineGraduated 1994
Enumeration DateDecember 14, 2006
Last NPPES UpdateJuly 10, 20252 updates tracked since enumeration
NPPES CertifiedJune 26, 2025
✔ NPI 1629130141 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Licenses✔ Licensed in FL · ME104326✔ Licensed in FL · TRN9159
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
8201 E RIVERSIDE BLVD, Rockford, IL 61114
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1875 S Route 31Crystal Lake, IL 60014-8190 · Phone (779) 220-5500
Location 2901 Grant StHarvard, IL 60033-1821 · Phone (815) 943-5431
Location 35915 Riverview BlvdBradenton, FL 34209-1860 · Phone (941) 730-0747

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter of Alabama, Imperial Insurance Companies, Inc. and more.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

James Chatham 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 ID6002968773
PECOS Enrollment IDI20090710000571, I20230711003323
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

25

Medicare enrollment records show James Chatham reassigns Medicare billing to 25 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rockford Health Physicians
Same address
Multi-Specialty
8201 E RIVERSIDE BLVD
Rockford, IL 61114
  • Reassigned Medicare billing, Illinois enrollment
  • 1,375 clinicians in this Medicare group
NPI 1043242886 (608) 314-2428
Mercy Harvard Hospital Inc
20 mi
Critical Access
901 GRANT ST
Harvard, IL 60033
  • Reassigned Medicare billing, Illinois enrollment
  • 382 clinicians in this Medicare group
NPI 1427001445 (815) 943-5431
Mercy Health System Corporation
25 mi
Multi-Specialty
580 N WASHINGTON ST
Janesville, WI 53548
  • Reassigned Medicare billing, Illinois enrollment
  • 671 clinicians in this Medicare group
NPI 1598718603 (608) 741-7630
Humboldt Park Health
71 mi
Family Medicine
1044 N FRANCISCO AVE
Chicago, IL 60622
  • Reassigned Medicare billing, Florida and Illinois enrollments
  • 12 clinicians in this Medicare group
NPI 1740417153 (773) 292-8200
Thorek Radiology Group Nfp
72 mi
Diagnostic Radiology
850 WEST IRVING PARK ROAD
Chicago, IL 60613
  • Reassigned Medicare billing, Illinois enrollment
  • 48 clinicians in this Medicare group
NPI 1588261978 (773) 975-6722
Howard Simon MD PLLC
75 mi
Diagnostic Radiology
446 E ONTARIO ST STE 106
Chicago, IL 60611
  • Reassigned Medicare billing, Florida enrollment
  • 44 clinicians in this Medicare group
NPI 1659930998 (312) 440-0016
Pco PC
688 mi
Diagnostic Radiology
7785 N STATE ST
Lowville, NY 13367
  • Reassigned Medicare billing, Florida enrollment
  • 12 clinicians in this Medicare group
NPI 1881230563 (800) 858-5876
Howard John Simon MD PC
784 mi
Diagnostic Radiology
170 E 77TH ST LOWR LEVEL
New York, NY 10075
  • Reassigned Medicare billing, Florida enrollment
  • 47 clinicians in this Medicare group
NPI 1932768934 (212) 369-9200
Brookdale Hospital Medical Center
786 mi
General Acute Care Hospital
1 BROOKDALE PLZ STE 666
Brooklyn, NY 11212
  • Reassigned Medicare billing, New York enrollment
  • 782 clinicians in this Medicare group
NPI 1720028772 (718) 240-8352
Steward Medical Group, Inc
911 mi
Specialist
77 WARREN ST
Brighton, MA 02135
  • Reassigned Medicare billing, Florida enrollment
  • 254 clinicians in this Medicare group
NPI 1356654495 (615) 467-4158

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 13

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.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967
Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.
3,851 services23 patients
Injection, gadoterate meglumine, 0.1 ml A9575
Gadoterate meglumine is a contrast agent used in MRI scans to help visualize certain areas of your body more clearly. It's injected into your bloodstream, typically through a vein in your arm, and helps doctors get more detailed images.
1,050 services11 patients
Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
433 services433 patients
Screening 3d breast mammography 77063
Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.
380 services380 patients
Injection, gadoteridol, (prohance multipack), per ml A9576
Gadoteridol, found in ProHance Multipack, is a contrast agent used in MRI scans. It's injected into your body to help highlight certain areas, making them easier to see. This can assist in diagnosing various health conditions. It's generally safe with few side effects.
130 services13 patients
Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
32 services32 patients

Hospital Affiliations CMS Care Compare 5

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

Thorek Memorial Hospital

Acute Care Hospitals · Chicago, IL
OwnershipVoluntary non-profit - Private
CMS Certification Number140115
Location850 W Irving Park RdChicago, IL 60613 · Cook County
Emergency services

Humboldt Park Health

Acute Care Hospitals · Chicago, IL
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140206
Location1044 N Francisco AveChicago, IL 60622 · Cook County
Emergency services Birthing friendly

Mclaren Northern Michigan

Acute Care Hospitals · Petoskey, MI
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number230105
Location416 Connable AvePetoskey, MI 49770 · Emmet County
Emergency services Birthing friendly

Lewis County General Hospital

Critical Access Hospitals · Lowville, NY
OwnershipGovernment - Local
CMS Certification Number331317
Location7785 North State StreetLowville, NY 13367 · Lewis County
Emergency services

Kittitas Valley Community Hospital

Critical Access Hospitals · Ellensburg, WA
OwnershipGovernment - Hospital District or Authority
CMS Certification Number501333
Location603 South ChestnutEllensburg, WA 98926 · Kittitas County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61114 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
$85.71 typical visit price
range $54.80 – $168.44
Typical copayment $21.42 (range $13.70 – $42.11)
Most-billed visit code 99203
Established Patient
$68.64 typical visit price
range $17.16 – $136.56
Typical copayment $17.16 (range $4.29 – $34.14)
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.

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

Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques
Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…
100%20 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.

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. BHARGAV DESAI M.D.
Neurological Surgery
8201 E RIVERSIDE BLVD
ROCKFORD, IL 61114
Winnebago County (815) 971-7000
DR. ALIX VINCENT MD
Radiology (Neuroradiology)
8201 E RIVERSIDE BLVD
ROCKFORD, IL 61114
Winnebago County (815) 971-7000
ERIN MARGARET OZMINKOWSKI
Internal Medicine
8201 E RIVERSIDE BLVD
ROCKFORD, IL 61114
Winnebago County (815) 971-6364
LAURA MADLINGER LEWIS OTD. OTR/L, CNT
Occupational Therapist
8201 E RIVERSIDE BLVD
ROCKFORD, IL 61114
Winnebago County (815) 971-7000
STEPHANIE YEAGER APN
Internal Medicine (Hospice and Palliative Medicine)
8201 E RIVERSIDE BLVD
ROCKFORD, IL 61114
Winnebago County (815) 971-5000
CAMERON JOSEPH SMITH PHARMD
Pharmacist
8201 E RIVERSIDE BLVD
ROCKFORD, IL 61114
Winnebago County (815) 971-7000
KARL E. MAGSAMEN M.D.
Radiology (Vascular & Interventional Radiology)
8201 E RIVERSIDE BLVD
ROCKFORD, IL 61114
Winnebago County (815) 971-7000
CHRISTINE NA-EUN MILLAR MD
Anesthesiology
8201 E RIVERSIDE BLVD
ROCKFORD, IL 61114
Winnebago County (815) 971-7000

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 James Chatham's NPI number?

The NPI number for James Chatham is 1629130141. It was assigned to this individual provider in the NPPES registry on December 14, 2006.

Where is James Chatham located?

James Chatham practices at 8201 E Riverside Blvd, Rockford, IL 61114. The listed phone number is (815) 971-7000.

What is James Chatham's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is James Chatham enrolled in Medicare?

Yes. James Chatham 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 James Chatham's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Chatham reassigns Medicare benefits to 25 organizations: Rockford Health Physicians (Rockford, IL), Mercy Harvard Hospital Inc (Harvard, IL), Mercy Health System Corporation (Janesville, WI), Humboldt Park Health (Chicago, IL), Thorek Radiology Group Nfp (Chicago, IL) and 20 more organizations, listed in the Medicare section above. 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 James Chatham's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does James Chatham accept?

Health plans from Ambetter Health, Ambetter of Alabama, Imperial Insurance Companies, Inc. and Oscar Health Maintenance Organization of Florida list James Chatham 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 James Chatham affiliated with any hospitals?

According to CMS data, James Chatham is affiliated with Thorek Memorial Hospital, Humboldt Park Health, Mclaren Northern Michigan, Lewis County General Hospital and Kittitas Valley Community Hospital.

When was this NPI record last updated?

The NPPES record for James Chatham was last updated on July 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.