Dr. Samuel Castillo Sr., MD
- Medicare services, 2022
- 17
- Part D claims, 2024
- 70
- Industry payments
- $6,436
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 2233 W Division St, Chicago, IL 60622
- Practice phone
- Call (312) 770-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Saint Mary of Nazareth Hospital
Chicago, Illinois
Find Dr. Castillo'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. Samuel Castillo Sr. is a gastroenterologist in Chicago, Illinois
Dr. Castillo practices at Saint Mary of Nazareth Hospital in Chicago, Illinois.
Dr. Castillo's NPI, 1467503672, was assigned on January 15, 2007. Dr. Castillo holds Illinois license 036063975.
- NPI
- 1467503672NPI Registry (opens in a new tab)
- NPI enumeration date
- January 15, 2007
- NPI status
- Active
- Practice phone
- (312) 770-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 86
- Medical school graduation
- 1966
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Samuel Castillo Sr. practices at Saint Mary of Nazareth Hospital in Chicago, Illinois
Dr. Castillo's primary practice is Saint Mary of Nazareth Hospital, at 2233 W Division St, Chicago, IL 60622 in Cook County. The practice phone is (312) 770-2000.
- Saint Mary of Nazareth Hospital2233 W Division St, Chicago, IL 60622 · Cook CountyPhone(312) 770-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Samuel Castillo Sr. is affiliated with 2 sites of care and 1 medical group
Dr. Castillo's primary practice is Saint Mary of Nazareth Hospital in Chicago, Illinois. The medical group on file is Chicago Gastro. Dmand AI also links Dr. Castillo to 1 more group practice or clinic, 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. Samuel Castillo Sr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castillo practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Mary of Nazareth Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Samuel Castillo Sr. is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Castillo's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Castillo is licensed in Illinois.
Specialties and state licenses
- Gastroenterology, IllinoisPrimary
Gastroenterologists near Dr. Castillo
Counts of gastroenterologists 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. Samuel Castillo Sr. billed Medicare for 17 services in 2022
CMS data shows 17 Medicare services from Dr. Castillo across 1 procedure code in 2022, all of them office visits. Medicare paid $843 for them. Every service was in an office.
Dr. Castillo's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1752022: 1790%
Dr. Castillo compared with the Illinois median for gastroenterologists, 2022
- Dr. Castillo
- Illinois median
- Medicare services
- 17vs 49897% below
- Part D claims
- 33vs 37091% below
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Castillo's most billed Medicare procedure codes, 2022
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. Castillo and other gastroenterologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Samuel Castillo Sr.'s patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Castillo's median patient age at 64, with 55% women.
Dr. Castillo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women55%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. Samuel Castillo Sr. wrote 70 Medicare Part D claims in 2024
In 2024, Dr. Castillo wrote 70 Medicare Part D claims for 25 patients. 71% of them were for generic drugs. CMS names the drug for 33 of them, across 2 drugs with 11 or more claims each, at $271 in total drug cost. In 2023, CMS named 99 claims across 4 drugs.
Dr. Castillo's Part D claims by kind of drug, 2024
- Generic50 claims71%
- Brand-name20 claims29%
Dr. Castillo'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 992024: 3367%
Drugs named by CMS: 2 in 2024, 4 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
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Dr. Samuel Castillo Sr. received $6,436 in industry payments from 2016 to 2025
CMS Open Payments shows 381 general payments to Dr. Castillo from 27 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Bausch Health Americas, Inc. paid the most, $2,320.
General payments to Dr. Castillo by program year, 2016 to 2025
Companies that paid Dr. Castillo 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. Samuel Castillo Sr.'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 Data |
| 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) |
| 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. Samuel Castillo Sr.
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. Samuel Castillo Sr.'s NPI number?
Dr. Samuel Castillo Sr.'s NPI number is 1467503672. It was assigned on January 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Samuel Castillo Sr.?
Dr. Samuel Castillo Sr. is a gastroenterologist in Chicago, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Samuel Castillo Sr. practice?
Dr. Castillo practices at 2233 W Division St, Chicago, IL 60622. Dr. Castillo's primary practice is Saint Mary of Nazareth Hospital in Chicago, Illinois. Dmand AI also links Dr. Castillo to 1 group practice or clinic.
What is Dr. Samuel Castillo Sr.'s office phone number?
The practice phone on file for Dr. Castillo is (312) 770-2000.
What is Dr. Samuel Castillo Sr.'s medical license number?
Dr. Castillo holds Illinois license 036063975.
What medical group is Dr. Samuel Castillo Sr. part of?
Dr. Castillo is linked to Chicago Gastro.
Does Dr. Samuel Castillo Sr. accept Medicare?
Yes. CMS data shows Dr. Castillo billed Medicare for 17 services in 2022.
What services does Dr. Samuel Castillo Sr. bill to Medicare?
In 2022, Dr. Castillo's most billed Medicare services were office visit, new patient (99203).
What drugs does Dr. Samuel Castillo Sr. prescribe most?
In 2024 Medicare Part D data, Dr. Castillo's most prescribed drugs by claims were Omeprazole and Pantoprazole Sodium.
Has Dr. Samuel Castillo Sr. received payments from drug or device companies?
CMS Open Payments shows $6,436 in general payments to Dr. Castillo from 27 companies from 2016 to 2025. The largest total came from Bausch Health Americas, Inc.
How long has Dr. Samuel Castillo Sr. been practicing?
Dr. Castillo graduated from medical school in 1966, 60 years ago.
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