Dr. Anthony C. Zalduendo, MD
- Medicare services, 2024
- 1,267
- Medicare patients, 2024
- 80
- Part D claims, 2024
- 38
- Clinical trials
- 1
- Hospital affiliations
- 5
- Practice address
- 1100 E Norris Dr, Ottawa, IL 61350
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
OSF Saint Elizabeth Medical Center - Behavioral Health - HOPD
Acute Care Hospital outpatient department · Ottawa, Illinois
Find Dr. Zalduendo's professional email, personal email and mobile number
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Dr. Anthony C. Zalduendo is a radiation oncologist in Ottawa, Illinois
Dr. Zalduendo practices at OSF Saint Elizabeth Medical Center - Behavioral Health - HOPD in Ottawa, Illinois.
Dr. Zalduendo's NPI, 1205844602, was assigned on August 3, 2006.
- NPI
- 1205844602NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123215753
- NPI enumeration date
- August 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Anthony C. Zalduendo practices at OSF Saint Elizabeth Medical Center - Behavioral Health - HOPD in Ottawa, Illinois
Dr. Zalduendo's primary practice is OSF Saint Elizabeth Medical Center - Behavioral Health - HOPD, at 1100 E Norris Dr, Ottawa, IL 61350.
- OSF Saint Elizabeth Medical Center - Behavioral Health - HOPD1100 E Norris Dr, Ottawa, IL 61350
Source: Dmand AI Affiliation Data
Dr. Anthony C. Zalduendo is affiliated with 7 sites of care and 2 medical groups
Dr. Zalduendo's primary practice is OSF Saint Elizabeth Medical Center - Behavioral Health - HOPD in Ottawa, Illinois. Dr. Zalduendo is also affiliated with OSF Saint Francis Medical Center. The medical group on file is OSF Multi-Specialty Group. Dmand AI also links Dr. Zalduendo to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Anthony C. Zalduendo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zalduendo practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OSF Saint Elizabeth Medical Center - Behavioral Health - HOPD | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Anthony C. Zalduendo is one of 243 radiation oncologists in Illinois
Radiation oncology is Dr. Zalduendo's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Zalduendo has a license on file in Illinois.
Specialties and state licenses
- Radiation oncology, Illinois
Radiation oncologists near Dr. Zalduendo
Counts of radiation oncologists 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. Anthony C. Zalduendo billed Medicare for 1,267 services in 2024
CMS data shows 1,267 Medicare services from Dr. Zalduendo across 13 procedure codes in 2024, for 80 Medicare patients. Medicare paid $88,175 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Zalduendo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,3292024: 1,19210%
- Office and hospital visits
- 2023: 912024: 7518%
Dr. Zalduendo compared with the Illinois median for radiation oncologists, 2024
- Dr. Zalduendo
- Illinois median
- Medicare services
- 1,267vs 1,45913% below
- Medicare patients
- 80vs 17655% below
- Part D claims
- 36vs 346% above
Medians across 231 radiation oncologists in Illinois with Dmand AI profiles that report each measure.
Dr. Zalduendo'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. Zalduendo?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zalduendo and other radiation oncologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Anthony C. Zalduendo treated 80 Medicare patients in 2024, average age 74
CMS counts 80 Medicare patients who saw Dr. Zalduendo in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have cancer, and 75% have high blood pressure. 16% are also on Medicaid. Their average risk score is 1.66, 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. Zalduendo's median patient age at 75, with 43% women.
Dr. Zalduendo's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Zalduendo's Medicare patients by sex, 2024
- Women3240%
- Men4860%
Chronic conditions among Dr. Zalduendo's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol73%
- Arthritis44%
- COPD41%
- Anxiety26%
- Ischemic heart disease26%
- Diabetes25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zalduendo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Anthony C. Zalduendo wrote 38 Medicare Part D claims in 2024
In 2024, Dr. Zalduendo wrote 38 Medicare Part D claims for 20 patients. 95% of them were for generic drugs. CMS names the drug for 36 of them, across 2 drugs with 11 or more claims each, at $565 in total drug cost.
Dr. Zalduendo's Part D claims by kind of drug, 2024
- Generic36 claims95%
- Brand-name and other2 claims5%
Dr. Zalduendo's most prescribed drugs by claims, 2021
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. Zalduendo's Part D claims, 2024
- Opioids32%12 of 38 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
How Dr. Anthony C. Zalduendo takes part in Medicare
Dr. Zalduendo accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Anthony C. Zalduendo has worked on 1 clinical trial
Dmand AI links Dr. Zalduendo to 1 clinical trial.
Recent clinical trials with Dr. Zalduendo
Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. Anthony C. Zalduendo'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Anthony C. Zalduendo
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. Anthony C. Zalduendo's NPI number?
Dr. Anthony C. Zalduendo's NPI number is 1205844602. It was assigned on August 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Anthony C. Zalduendo?
Dr. Anthony C. Zalduendo is a radiation oncologist in Ottawa, Illinois. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Anthony C. Zalduendo practice?
Dr. Zalduendo practices at 1100 E Norris Dr, Ottawa, IL 61350. Dr. Zalduendo's primary practice is OSF Saint Elizabeth Medical Center - Behavioral Health - HOPD in Ottawa, Illinois. Dmand AI also links Dr. Zalduendo to 4 hospitals, 1 group practice or clinic and 1 medical group.
Which hospitals is Dr. Anthony C. Zalduendo affiliated with?
Dr. Zalduendo is affiliated with OSF Saint Francis Medical Center. Dmand AI links Dr. Zalduendo to 4 more hospitals.
What medical group is Dr. Anthony C. Zalduendo part of?
Dr. Zalduendo is linked to OSF Multi-Specialty Group. Dmand AI links Dr. Zalduendo to 1 more medical group.
Does Dr. Anthony C. Zalduendo accept Medicare?
Yes. CMS data shows Dr. Zalduendo billed Medicare for 1,267 services in 2024, and Dr. Zalduendo accepts Medicare assignment.
How many Medicare patients does Dr. Anthony C. Zalduendo see?
CMS counts 80 Medicare patients who saw Dr. Zalduendo in 2024, with an average age of 74.
What services does Dr. Anthony C. Zalduendo bill to Medicare?
In 2024, Dr. Zalduendo's most billed Medicare services were radiation oncology (77014), radiation oncology (77427) and radiation oncology (77300).
What drugs does Dr. Anthony C. Zalduendo prescribe most?
In 2021 Medicare Part D data, Dr. Zalduendo's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Oxycodone-Acetaminophen.
How long has Dr. Anthony C. Zalduendo been practicing?
Dr. Zalduendo graduated from medical school in 1995, 31 years ago.
Does Dr. Anthony C. Zalduendo do research?
Dr. Zalduendo has worked on 1 clinical trial.
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