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DR. KENNETH I ORIORDAN MD
NPI 1912075649
Internal Medicine - Gastroenterology in Niles, IL

Active since December 01, 2006PECOS EnrolledAccepts Medicare Assignment
7900 MILWAUKEE AVE, SUITE 19, NILES, IL 60714(847) 318-9595(847) 318-9599 Get Directions Write a Review

NPPES record last updated: October 23, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Kenneth I Oriordan Md NPPES

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

DR. KENNETH I ORIORDAN MD (NPI 1912075649) is an individual gastroenterology provider in Niles, Illinois, licensed in Illinois (036084107) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1912075649
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. KENNETH I ORIORDANCredential: MD
Location Address7900 MILWAUKEE AVE, SUITE 19Niles, IL 60714-3159
Mailing Address7900 N Milwaukee Ave Ste 19Niles, IL 60714-3239 · (847) 318-9595 · Fax (847) 318-9599
Phone(847) 318-9595
Fax(847) 318-9599
Sole ProprietorNo
Medical School CMSOtherGraduated 1998
Enumeration DateDecember 1, 2006
Last NPPES UpdateOctober 23, 2025
NPPES CertifiedOctober 23, 2025
✔ NPI 1912075649 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses✔ Licensed in IL · 036084107✔ Licensed in MT · 57870
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
7900 MILWAUKEE AVE, Niles, IL 60714
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11401 25th St SGreat Falls, MT 59405-5183 · Phone (406) 731-8888 · Fax (406) 731-8318
Location 2259 E Erie St Ste 1600Chicago, IL 60611-3111 · Phone (312) 695-5620 · Fax (312) 695-7095

Other Identifiers 2

Medicaid036084107IL
Other100016094IL · Rail Road Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, Oscar Health 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

Dr. Kenneth I Oriordan 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 ID3577586239
PECOS Enrollment IDI20060112000077, I20170628002471
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

6

Medicare enrollment records show Kenneth Oriordan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lakeshore Gastroenterology And Liver Disease Institute S.C.
9.3 mi
Gastroenterology
1 ERIE COURT, SUITE 3100
Oak Park, IL 60614
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Lakeshore Gastroenterology And Liver Disease Institute Sc
  • 8 clinicians in this Medicare group
NPI 1528237765 (708) 763-8248
Saint Anthony Health Affiliates
13 mi
Multi-Specialty
2875 WEST 19TH STREET
Chicago, IL 60623
  • Reassigned Medicare billing, Illinois enrollment
  • 210 clinicians in this Medicare group
NPI 1295010056 (773) 484-4425
Northwestern Medical Faculty Foundation
23 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
City Of Hope Medical Group Of Illinois PLLC
29 mi
Specialist
2520 ELISHA AVE
Zion, IL 60099
  • Reassigned Medicare billing, Illinois enrollment
  • 253 clinicians in this Medicare group
NPI 1548258072 (847) 746-4358
Rockford Health Physicians
62 mi
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
Benefis Hospitals, Inc.
1,208 mi
General Acute Care Hospital
1101 26TH ST S
Great Falls, MT 59405
  • Reassigned Medicare billing, Montana enrollment
  • 637 clinicians in this Medicare group
NPI 1881650737 (406) 455-5000

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 11

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
104 services64 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
87 services84 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
79 services77 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
49 services49 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
40 services28 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
29 services21 patients

Hospital Affiliations CMS Care Compare 3

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

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140281
Location251 E Huron StChicago, IL 60611 · Cook County
Emergency services Birthing friendly

Benefis Hospitals Inc

Acute Care Hospitals · Great Falls, MT
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number270012
Location1101 26th St SGreat Falls, MT 59405 · Cascade County
Emergency services Birthing friendly

Great Falls Clinic Hospital

Acute Care Hospitals · Great Falls, MT
5/5 CMS rating
OwnershipProprietary
CMS Certification Number270086
Location3010 15th Avenue SouthGreat Falls, MT 59405 · Cascade County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60714 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier13 claims1,560 services$0.30 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
1 supplier11 claims11 services$17.21 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 2

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

DR. DEAN SILAS MD
Internal Medicine (Gastroenterology)
7900 MILWAUKEE AVE, SUITE 19
NILES, IL 60714
Cook County (847) 318-9595
DR. MARC FINE MD
Internal Medicine (Gastroenterology)
7900 MILWAUKEE AVE, SUITE 19
NILES, IL 60714
Cook County (847) 318-9595

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 Kenneth Oriordan's NPI number?

The NPI number for Kenneth Oriordan is 1912075649. It was assigned to this individual provider in the NPPES registry on December 1, 2006.

Where is Kenneth Oriordan located?

Kenneth Oriordan practices at 7900 Milwaukee Ave Suite 19, Niles, IL 60714. The listed phone number is (847) 318-9595.

What is Kenneth Oriordan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Kenneth Oriordan enrolled in Medicare?

Yes. Kenneth Oriordan 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 Kenneth Oriordan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kenneth Oriordan reassigns Medicare benefits to 6 organizations: Lakeshore Gastroenterology And Liver Disease Institute S.C. (Oak Park, IL), Saint Anthony Health Affiliates (Chicago, IL), Northwestern Medical Faculty Foundation (Carol Stream, IL), City Of Hope Medical Group Of Illinois PLLC (Zion, IL), Rockford Health Physicians (Rockford, IL) and 1 more organization, 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 Kenneth Oriordan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kenneth Oriordan accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, Oscar Health, PacificSource Health Plans and Providence Health Plan list Kenneth Oriordan 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 Kenneth Oriordan affiliated with any hospitals?

According to CMS data, Kenneth Oriordan is affiliated with Northwestern Memorial Hospital, Benefis Hospitals Inc and Great Falls Clinic Hospital.

When was this NPI record last updated?

The NPPES record for Kenneth Oriordan was last updated on October 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.