DR. BASSIM ASSIOUN M.D.
NPI 1669785408
Internal Medicine - Nephrology in O Fallon, IL

Q: What is Bassim Assioun's NPI number?

The NPI number for Bassim Assioun is 1669785408. It was assigned to this individual provider in the NPPES registry on July 22, 2010.

Q: What is Bassim Assioun's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Bassim Assioun was last updated on October 7, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since July 22, 2010PECOS EnrolledAccepts Medicare Assignment

94.61/100

CMS Quality Rating

3 SAINT ELIZABETH BLVD STE 5000, O FALLON, IL 62269(618) 641-5803(618) 607-5116 Get Directions Write a Review

NPPES record last updated: October 7, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Bassim Assioun M.d. NPPES

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

DR. BASSIM ASSIOUN M.D. (NPI 1669785408) is an individual nephrology provider in O Fallon, Illinois, licensed in Illinois (036137061) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS, is affiliated with St Johns Hospital, and is a graduate of Other (2008).

NPPES Registry Identity

NPI1669785408

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameDR. BASSIM ASSIOUNCredential: M.D.

Location Address3 SAINT ELIZABETH BLVD STE 5000O Fallon, IL 62269-1282

Mailing Address3 Saint Elizabeth Blvd Ste 5000O Fallon, IL 62269-1282 · (618) 641-5803 · Fax (618) 607-5116

Phone(618) 641-5803

Fax(618) 607-5116

Sole ProprietorNo

Medical School CMSOtherGraduated 2008

Enumeration DateJuly 22, 2010

Last NPPES UpdateOctober 7, 2020

NPPES CertifiedOctober 6, 2020

✔ NPI 1669785408 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in IL · 036137061

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 2010015148 (MO)

3 SAINT ELIZABETH BLVD STE 5000, O Fallon, IL 62269

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Bassim Assioun 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 ID4183945330

PECOS Enrollment IDI20150601000657

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.

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.

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.

1,101 services261 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.

376 services289 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

206 services160 patients

Dialysis services, 2-3 physician visits per month (20 years or older) 90961

Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.

155 services40 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.

154 services43 patients

Dialysis services, 1 physician visit per month (20 years or older) 90962

Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys canâ€™t do their job. A physician visit once a month ensures your treatment is working effectively and adjusts it if necessary. This service is available for individuals aged 20 years and older.

140 services35 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.

110 services110 patients

Hemodialysis procedure with physician evaluation 90935

Hemodialysis is a treatment that uses a machine to filter waste and excess fluid from your blood when your kidneys can't. A physician checks your health before, during, and after the procedure to ensure it's working effectively for you.

91 services44 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

86 services78 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

53 services42 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.

47 services47 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.

16 services16 patients

Hospital Affiliations CMS Care Compare 5

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

St Johns Hospital

Acute Care Hospitals · Springfield, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140053

Location800 E Carpenter StSpringfield, IL 62769 · Sangamon County

Emergency services Birthing friendly

St Josephs Hospital

Acute Care Hospitals · Breese, IL

OwnershipVoluntary non-profit - Church

CMS Certification Number140145

Location9515 Holy Cross LnBreese, IL 62230 · Clinton County

Emergency services Birthing friendly

Memorial Hospital

Acute Care Hospitals · Belleville, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140185

Location4500 Memorial DriveBelleville, IL 62226 · St. Clair County

Emergency services Birthing friendly

Hshs St Elizabeth's Hospital

Acute Care Hospitals · O Fallon, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140187

LocationOne St Elizabeth BoulevardO Fallon, IL 62269 · St. Clair County

Emergency services Birthing friendly

St Joseph's Hospital

Critical Access Hospitals · Highland, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number141336

Location12866 Troxler AvenueHighland, IL 62249 · Madison County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62269 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

$131.14 typical visit price

range $56.28 – $173.35

Typical copayment $32.78 (range $14.07 – $43.33)

Most-billed visit code 99204

Established Patient

$99.71 typical visit price

range $17.51 – $139.99

Typical copayment $24.92 (range $4.37 – $34.99)

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.

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.

94.61/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

85.17

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 4

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 supplier11 claims660 services$0.29 avg. paid by Medicare

Mycophenolic acid, oral, 180 mg J7518

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers23 claims3,360 services$0.93 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

3 suppliers15 claims15 services$17.68 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512

Treatment-Chemotherapy · category RH012N

2 suppliers16 claims18 services$12.63 avg. paid by Medicare

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

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Other Providers at the Same Location NPPES 11

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

MS. ANGELA N CROESSMAN-MARSHALL AGNP-C

Nurse Practitioner (Adult Health)