Dr. Nicholas Guastalli, DO
- Medicare services, 2024
- 2,266
- Medicare patients, 2024
- 570
- Part D claims, 2024
- 9,350
- Hospital affiliations
- 2
- Industry payments
- $8,423
- Practice address
- 401 N Wall St, Kankakee, IL 60901
- Practice phone
- Call (815) 933-1671
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Riverside Health System
Kankakee, Illinois
Find Dr. Guastalli'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. Nicholas Guastalli is an internist in Kankakee, Illinois
Dr. Guastalli practices at Riverside Health System in Kankakee, Illinois.
Dr. Guastalli's NPI, 1275957334, was assigned on February 10, 2014. Dr. Guastalli holds Illinois license 036143561.
- NPI
- 1275957334NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698040889
- NPI enumeration date
- February 10, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (815) 933-1671
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicholas Guastalli practices at Riverside Health System in Kankakee, Illinois
Dr. Guastalli's primary practice is Riverside Health System, at 401 N Wall St, Kankakee, IL 60901 in Kankakee County. The practice phone is (815) 933-1671.
- Riverside Health System401 N Wall St, Kankakee, IL 60901 · Kankakee CountyPhone(815) 933-1671
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Nicholas Guastalli is affiliated with 7 sites of care and 1 medical group
Dr. Guastalli's primary practice is Riverside Health System in Kankakee, Illinois. Dr. Guastalli is also affiliated with Riverside Medical Center. The medical group on file is Riverside Healthcare. Dmand AI also links Dr. Guastalli to 1 more hospital, 2 home health agencies, 1 group practice or clinic and 1 hospice, 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. Nicholas Guastalli's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guastalli practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Health System | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nicholas Guastalli is one of 5,652 internists in Illinois
Internal medicine is Dr. Guastalli's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Guastalli is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Guastalli
Counts of internists 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. Nicholas Guastalli billed Medicare for 2,266 services in 2024
CMS data shows 2,266 Medicare services from Dr. Guastalli across 12 procedure codes in 2024, for 570 Medicare patients. Medicare paid $168,733 for them. Every service was in an office.
Dr. Guastalli's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 6662024: 1,14772%
- Office and hospital visits
- 2023: 8702024: 1,02418%
- Tests and treatments
- 2023: 1512024: 9537%
- Lab and pathology
- 2023: 182024: 0100%
Dr. Guastalli compared with the Illinois median for internists, 2024
- Dr. Guastalli
- Illinois median
- Medicare services
- 2,266vs 5664.0 times
- Medicare patients
- 570vs 2082.7 times
- Part D claims
- 8,657vs 28430.5 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Guastalli'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guastalli and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nicholas Guastalli treated 570 Medicare patients in 2024, average age 75
CMS counts 570 Medicare patients who saw Dr. Guastalli in 2024. The largest group is 65 to 74, with 242 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.26, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Guastalli's median patient age at 70, with 51% women.
Dr. Guastalli's Medicare patients by age, 2024
Dr. Guastalli's Medicare patients by sex, 2024
- Women28851%
- Men28249%
Chronic conditions among Dr. Guastalli's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis45%
- Ischemic heart disease39%
- Chronic kidney disease38%
- Diabetes31%
- Heart failure23%
- Mood disorders22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Guastalli's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nicholas Guastalli wrote 9,350 Medicare Part D claims in 2024
In 2024, Dr. Guastalli wrote 9,350 Medicare Part D claims for 756 patients. 88% of them were for generic drugs. CMS names the drug for 8,657 of them, across 126 drugs with 11 or more claims each, at $925,378 in total drug cost. In 2023, CMS named 8,224 claims across 132 drugs.
Dr. Guastalli's Part D claims by kind of drug, 2024
- Generic8,192 claims88%
- Brand-name1,096 claims12%
- Other62 claims1%
Dr. Guastalli'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. Guastalli's Part D claims, 2024
- Opioids1%97 of 9,350 claims
- Antibiotics2%150 of 9,350 claims
- Antipsychotics, patients 65 and over0%12 of 9,350 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: 8,2242024: 8,6575%
Drugs named by CMS: 126 in 2024, 132 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. Nicholas Guastalli offers telehealth to Medicare patients
Dr. Guastalli accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Guastalli as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Nicholas Guastalli received $8,423 in industry payments from 2016 to 2025
CMS Open Payments shows 515 general payments to Dr. Guastalli from 55 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $990.
General payments to Dr. Guastalli by program year, 2016 to 2025
Companies that paid Dr. Guastalli the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Nicholas Guastalli'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) |
| 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. Nicholas Guastalli
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. Nicholas Guastalli's NPI number?
Dr. Nicholas Guastalli's NPI number is 1275957334. It was assigned on February 10, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicholas Guastalli?
Dr. Nicholas Guastalli is an internist in Kankakee, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nicholas Guastalli practice?
Dr. Guastalli practices at 401 N Wall St, Kankakee, IL 60901. Dr. Guastalli's primary practice is Riverside Health System in Kankakee, Illinois. Dmand AI also links Dr. Guastalli to 1 hospital, 2 home health agencies, 1 group practice or clinic and 1 hospice.
What is Dr. Nicholas Guastalli's office phone number?
The practice phone on file for Dr. Guastalli is (815) 933-1671.
What is Dr. Nicholas Guastalli's medical license number?
Dr. Guastalli holds Illinois license 036143561.
Which hospitals is Dr. Nicholas Guastalli affiliated with?
Dr. Guastalli is affiliated with Riverside Medical Center. Dmand AI links Dr. Guastalli to 1 more hospital.
What medical group is Dr. Nicholas Guastalli part of?
Dr. Guastalli is linked to Riverside Healthcare.
Does Dr. Nicholas Guastalli accept Medicare?
Yes. CMS data shows Dr. Guastalli billed Medicare for 2,266 services in 2024, and Dr. Guastalli accepts Medicare assignment.
Does Dr. Nicholas Guastalli offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Guastalli as offering telehealth services.
How many Medicare patients does Dr. Nicholas Guastalli see?
CMS counts 570 Medicare patients who saw Dr. Guastalli in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Nicholas Guastalli bill to Medicare?
In 2024, Dr. Guastalli's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0439).
What drugs does Dr. Nicholas Guastalli prescribe most?
In 2024 Medicare Part D data, Dr. Guastalli's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Losartan Potassium.
Has Dr. Nicholas Guastalli received payments from drug or device companies?
CMS Open Payments shows $8,423 in general payments to Dr. Guastalli from 55 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Nicholas Guastalli been practicing?
Dr. Guastalli graduated from medical school in 2014, 12 years ago.
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