Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

ALEXANDER J. ALONSO M.D.
NPI 1124152707
Internal Medicine - Nephrology in Peoria, IL

Q: What is Alexander Alonso's NPI number?

The NPI number for Alexander Alonso is 1124152707. It was assigned to this individual provider in the NPPES registry on March 15, 2007.

Q: What is Alexander Alonso'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 Alexander Alonso was last updated on July 21, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since March 15, 2007PECOS Enrolled

420 NE GLEN OAK AVE STE 401, PEORIA, IL 61603(309) 676-8123(309) 676-8455 Get Directions Write a Review

NPPES record last updated: July 21, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 21, 2026, May 25, 2022, Nov 29, 2021 and 1 more (4 updates tracked since 2018).

On this page

About Alexander J. Alonso M.d. NPPES

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

ALEXANDER J. ALONSO M.D. (NPI 1124152707) is an individual nephrology provider in Peoria, Illinois, licensed in Illinois (036115179) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS, is affiliated with Graham Hospital Association, and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1124152707

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameALEXANDER J. ALONSOCredential: M.D.

Location Address420 NE GLEN OAK AVE STE 401Peoria, IL 61603-3112

Mailing Address420 Ne Glen Oak Ave Ste 401Peoria, IL 61603-3112 · (309) 676-8123 · Fax (309) 676-8455

Phone(309) 676-8123

Fax(309) 676-8455

Sole ProprietorNo

Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2003

Enumeration DateMarch 15, 2007

Last NPPES UpdateJuly 21, 20264 updates tracked since enumeration

NPPES CertifiedJuly 21, 2026

✔ NPI 1124152707 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in IL · 036115179

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 ListedInternal MedicineTaxonomy 207R00000X · License 036115179 (IL)

Also ListedInternal Medicine · Hypertension SpecialistTaxonomy 207RH0005X · License 036115179 (IL)

420 NE GLEN OAK AVE STE 401, Peoria, IL 61603

Open in Google Maps ↗

Secondary Practice Locations 4

Location 1180 S Main Ste, Ste I/Floor 2Canton, IL 61520 · Phone (309) 676-8123 · Fax (309) 676-8455

Location 2201 N Cummings LnWashington, IL 61571-2181 · Phone (309) 676-8123 · Fax (309) 676-8455

Location 31762 Washington RdWashington, IL 61571-2181 · Phone (309) 676-8123 · Fax (309) 676-8455

Location 4180 S Main Ste, Ste ICanton, IL 61520 · Phone (309) 676-8123 · Fax (309) 676-8455

Other Identifiers 3

OtherCA4079IL · Rr Group

OtherP00414412IL · Rr Individual

Medicaid036115179IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company.Insurance ›

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

Alexander J. Alonso 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 ID7911008149

PECOS Enrollment IDI20070718000462

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 14

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.

Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes 99458

This service involves analyzing your vital signs, like heart rate and blood pressure, remotely collected over a month. Each additional 20 minutes spent on management refers to extra time spent reviewing, interpreting your data, and planning your care. It's a critical part of ensuring your wellbeing.

808 services56 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.

739 services458 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.

488 services177 patients

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.

435 services171 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

381 services65 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

302 services50 patients

Dialysis services, 4 or more physician visits per month (20 years or older) 90960

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 can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.

133 services22 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.

120 services115 patients

Home dialysis services per month (20 years or older) 90966

Home dialysis services provide kidney treatment for patients aged 20 or older right in their own homes. This service includes necessary equipment, supplies, and support for performing dialysis. It's a convenient option that allows patients to maintain their daily routines while receiving essential care.

100 services12 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.

72 services72 patients

Remote monitoring of physiologic parameters, initial set-up and patient education on use of equipment 99453

Remote monitoring of physiologic parameters involves using special equipment to track vital signs like heart rate and blood pressure from a distance. The initial set-up includes installing the device and teaching the patient how to use it correctly for accurate readings.

53 services53 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.

51 services28 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.

37 services36 patients

Manual urinalysis test with examination using microscope, automated 81001

A manual urinalysis test with automated microscopic examination is a lab process that checks your urine for health indicators. It involves a machine scanning your sample to identify any abnormal elements, which can assist in diagnosing various conditions.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

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

Graham Hospital Association

Acute Care Hospitals · Canton, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140001

Location210 West Walnut StreetCanton, IL 61520 · Fulton County

Emergency services Birthing friendly

Proctor Hospital

Acute Care Hospitals · Peoria, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140013

Location5409 N Knoxville AvePeoria, IL 61614 · Peoria County

Emergency services

Saint Francis Medical Center

Acute Care Hospitals · Peoria, IL

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140067

Location530 NE Glen Oak AvePeoria, IL 61637 · Peoria County

Emergency services Birthing friendly

Methodist Medical Center Of Illinois

Acute Care Hospitals · Peoria, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140209

Location221 N E Glen Oak AvePeoria, IL 61636 · Peoria County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61603 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

$127.46 typical visit price

range $54.80 – $168.44

Typical copayment $31.86 (range $13.70 – $42.11)

Most-billed visit code 99204

Established Patient

$97.25 typical visit price

range $17.16 – $136.56

Typical copayment $24.31 (range $4.29 – $34.14)

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 7

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

Azathioprine, oral, 50 mg J7500

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers12 claims720 services$1.00 avg. paid by Medicare

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

7 suppliers36 claims2,130 services$0.31 avg. paid by Medicare

Prednisone, immediate release or delayed release, oral, 1 mg J7512

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier11 claims1,650 services$0.01 avg. paid by Medicare

Cyclosporine, oral, 25 mg J7515

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier11 claims660 services$0.42 avg. paid by Medicare

Mycophenolic acid, oral, 180 mg J7518

Treatment-Treatment - Miscellaneous · category RX029N

5 suppliers41 claims6,360 services$0.94 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

6 suppliers38 claims38 services$15.93 avg. paid by Medicare

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

Leave this field empty

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.

COURTNEY HARLEY ANP

Nurse Practitioner