Dr. Alexander J. Alonso, MD
- Medicare services, 2024
- 4,519
- Medicare patients, 2024
- 830
- Part D claims, 2024
- 3,830
- Hospital affiliations
- 4
- Industry payments
- $90
- Practice address
- 420 NE Glen Oak Ave, Peoria, IL 61603
- Practice phone
- Call (309) 676-8123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Renalcare Associates, S.C.
Peoria, Illinois
Find Dr. Alonso's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Alexander J. Alonso is a nephrologist in Peoria, Illinois
Dr. Alonso practices at Renalcare Associates, S.C. in Peoria, Illinois.
Dr. Alonso's NPI, 1124152707, was assigned on March 15, 2007. Dr. Alonso graduated from University of Illinois College of Medicine - Chicago in 2003. Dr. Alonso holds Illinois license 036115179.
- NPI
- 1124152707NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911008149
- NPI enumeration date
- March 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (309) 676-8123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander J. Alonso practices at Renalcare Associates, S.C. in Peoria, Illinois
Dr. Alonso's primary practice is Renalcare Associates, S.C., at 420 NE Glen Oak Ave, Peoria, IL 61603 in Peoria County. The practice phone is (309) 676-8123.
- Renalcare Associates, S.C.420 NE Glen Oak Ave, Peoria, IL 61603 · Peoria CountyPhone(309) 676-8123
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Alexander J. Alonso is affiliated with 11 sites of care and 3 medical groups
Dr. Alonso's primary practice is Renalcare Associates, S.C. in Peoria, Illinois. Dr. Alonso is also affiliated with OSF Saint Francis Medical Center. The medical group on file is RenalCare Associates SC. Dmand AI also links Dr. Alonso to 3 more hospitals, 3 dialysis centers, 3 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Alexander J. Alonso's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Alonso practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Renalcare Associates, S.C. | Available with a free account |
| +10 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander J. Alonso is one of 534 nephrologists in Illinois
Nephrology is Dr. Alonso's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Alonso is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Alonso's licenses on file in 2 states: Illinois and Kentucky.
Specialties and state licenses
- Nephrology, IllinoisPrimary
- Kentucky license
Clinical focus
Dmand AI lists chronic kidney disease, fluid and electrolyte imbalances, hypercalcemia and parathyroid gland disorder among the conditions Dr. Alonso treats.
Nephrologists near Dr. Alonso
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alexander J. Alonso billed Medicare for 4,519 services in 2024
CMS data shows 4,519 Medicare services from Dr. Alonso across 15 procedure codes in 2024, for 830 Medicare patients. Medicare paid $264,543 for them.
Dr. Alonso's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,7542024: 3,43596%
- Other services
- 2023: 02024: 789
- Tests and treatments
- 2023: 4482024: 28437%
- Lab and pathology
- 2023: 02024: 11
Where Dr. Alonso's Medicare services took place, 2024
- In an office3,38875%
- In a facility1,13125%
Dr. Alonso compared with the Illinois median for nephrologists, 2024
- Dr. Alonso
- Illinois median
- Medicare services
- 4,519vs 1,2843.5 times
- Medicare patients
- 830vs 3572.3 times
- Part D claims
- 3,599vs 5786.2 times
Medians across 526 nephrologists in Illinois with Dmand AI profiles that report each measure.
Dr. Alonso's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Alonso?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Alonso and other nephrologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexander J. Alonso treated 830 Medicare patients in 2024, average age 74
CMS counts 830 Medicare patients who saw Dr. Alonso in 2024. The largest group is 65 to 74, with 297 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 18% are also on Medicaid. Their average risk score is 3.07, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Alonso's median patient age at 73, with 50% women.
Dr. Alonso's Medicare patients by age, 2024
Dr. Alonso's Medicare patients by sex, 2024
- Women40949%
- Men42151%
Chronic conditions among Dr. Alonso's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes52%
- Arthritis47%
- Heart failure47%
- Ischemic heart disease41%
- Atrial fibrillation32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Alonso's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander J. Alonso wrote 3,830 Medicare Part D claims in 2024
In 2024, Dr. Alonso wrote 3,830 Medicare Part D claims for 546 patients. 82% of them were for generic drugs. CMS names the drug for 3,599 of them, across 41 drugs with 11 or more claims each, at $602,727 in total drug cost. In 2023, CMS named 3,287 claims across 42 drugs.
Dr. Alonso's Part D claims by kind of drug, 2024
- Generic3,126 claims82%
- Brand-name704 claims18%
Dr. Alonso's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Alonso's Part D claims, 2024
- Antibiotics2%74 of 3,830 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,2872024: 3,5999%
Drugs named by CMS: 41 in 2024, 42 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Alexander J. Alonso offers telehealth to Medicare patients
Dr. Alonso accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Alonso as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Alexander J. Alonso received $90 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Alonso from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. NxStage Medical, Inc. paid the most, $90.
Companies that paid Dr. Alonso the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexander J. Alonso has 1 award and honors on record
Dmand AI lists 1 award for Dr. Alonso, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Alonso
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Alexander J. Alonso graduated from University of Illinois College of Medicine - Chicago
Dr. Alonso graduated from University of Illinois College of Medicine - Chicago in 2003. Dr. Alonso is a member of ASH.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Alexander J. Alonso accepts plans from 18 insurance carriers
Dr. Alonso is in network with 18 carriers, including Aetna, HCSC and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- HCSC
- United Healthcare
- Elevance
- Humana
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- +10 more carriersWith a free account
Plan types Dr. Alonso accepts, by number of carriers
- PPO11
- HMO10
- Medicare8
- POS5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Alexander J. Alonso's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Alexander J. Alonso
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Alexander J. Alonso's NPI number?
Dr. Alexander J. Alonso's NPI number is 1124152707. It was assigned on March 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander J. Alonso?
Dr. Alexander J. Alonso is a nephrologist in Peoria, Illinois. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Alexander J. Alonso practice?
Dr. Alonso practices at 420 NE Glen Oak Ave, Peoria, IL 61603. Dr. Alonso's primary practice is Renalcare Associates, S.C. in Peoria, Illinois. Dmand AI also links Dr. Alonso to 3 hospitals, 3 dialysis centers, 3 group practices and clinics and 2 medical groups.
What is Dr. Alexander J. Alonso's office phone number?
The practice phone on file for Dr. Alonso is (309) 676-8123.
What is Dr. Alexander J. Alonso's medical license number?
Dr. Alonso holds Illinois license 036115179, one of the licenses on file in 2 states.
Which states has Dr. Alexander J. Alonso been licensed in?
Dmand AI has state licenses on file for Dr. Alonso in Illinois (2006 to 2026) and Kentucky (2008 to 2011).
Which hospitals is Dr. Alexander J. Alonso affiliated with?
Dr. Alonso is affiliated with OSF Saint Francis Medical Center. Dmand AI links Dr. Alonso to 3 more hospitals.
What medical group is Dr. Alexander J. Alonso part of?
Dr. Alonso is linked to RenalCare Associates SC. Dmand AI links Dr. Alonso to 2 more medical groups.
Does Dr. Alexander J. Alonso accept Medicare?
Yes. CMS data shows Dr. Alonso billed Medicare for 4,519 services in 2024, and Dr. Alonso accepts Medicare assignment.
Does Dr. Alexander J. Alonso offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Alonso as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Alexander J. Alonso see?
CMS counts 830 Medicare patients who saw Dr. Alonso in 2024, with an average age of 74.
Is Dr. Alexander J. Alonso board certified?
Yes. Dr. Alonso is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Alexander J. Alonso bill to Medicare?
In 2024, Dr. Alonso's most billed Medicare services were care management and other visits (99458), medicare service (G2211) and office visit, established patient (99214).
Where did Dr. Alexander J. Alonso go to medical school?
Dr. Alonso graduated from University of Illinois College of Medicine - Chicago in 2003.
What drugs does Dr. Alexander J. Alonso prescribe most?
In 2024 Medicare Part D data, Dr. Alonso's most prescribed drugs by claims were Jardiance, Calcitriol and Losartan Potassium.
Has Dr. Alexander J. Alonso received payments from drug or device companies?
CMS Open Payments shows $90 in general payments to Dr. Alonso from 1 company from 2025 to 2025. The largest total came from NxStage Medical, Inc.
How long has Dr. Alexander J. Alonso been practicing?
Dr. Alonso graduated from medical school in 2003, 23 years ago.
What insurance does Dr. Alexander J. Alonso accept?
Dr. Alonso is in network with 18 carriers, including Aetna, HCSC and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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