Dr. Samuel Guillermo Castro-Rivera, MD
- Medicare services, 2019
- 42
- Part D claims, 2024
- 9,501
- Industry payments
- $138
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 43 Cll 34, Bayamon, PR 00961
- Practice phone
- Call (787) 797-5365
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Castro-Rivera'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 Guillermo Castro-Rivera is a general practice physician in Bayamon, Puerto Rico
Dr. Castro-Rivera practices in Bayamon, Puerto Rico.
Dr. Castro-Rivera's NPI, 1780646786, was assigned on April 5, 2006. Dr. Castro-Rivera holds Puerto Rico license 16024.
- NPI
- 1780646786NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921014820
- NPI enumeration date
- April 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 797-5365
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Samuel Guillermo Castro-Rivera's practice address is in Bayamon, Puerto Rico
Dr. Castro-Rivera's practice address in the NPI Registry is 43 Cll 34, Bayamon, PR 00961, in Bayamon County. The practice phone is (787) 797-5365.
- NPI Registry address43 Cll 34, Bayamon, PR 00961 · Bayamon CountyPhone(787) 797-5365
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Samuel Guillermo Castro-Rivera's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castro-Rivera practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Castro-Rivera's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Samuel Guillermo Castro-Rivera is one of 2,604 general practice physicians in Puerto Rico
General practice is Dr. Castro-Rivera's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Castro-Rivera is licensed in Puerto Rico.
Specialties and state licenses
- General practice, Puerto RicoPrimary
General practice physicians near Dr. Castro-Rivera
Counts of general practice physicians 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 Guillermo Castro-Rivera billed Medicare for 42 services in 2019
CMS data shows 42 Medicare services from Dr. Castro-Rivera across 1 procedure code in 2019, all of them office visits. Medicare paid $2,002 for them. Every service was in an office.
Dr. Castro-Rivera's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 402019: 425%
Dr. Castro-Rivera compared with the Puerto Rico median for general practice physicians, 2019
- Dr. Castro-Rivera
- Puerto Rico median
- Medicare services
- 42vs 3424% above
- Part D claims
- 8,771vs 73511.9 times
Medians across 3,001 general practice physicians in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Castro-Rivera's most billed Medicare procedure codes, 2019
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. Castro-Rivera and other general practice physicians in Puerto Rico.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Samuel Guillermo Castro-Rivera's patients have a median age of 79
Across all payers, Dmand AI patient panel data puts Dr. Castro-Rivera's median patient age at 79, with 67% women.
Dr. Castro-Rivera's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Samuel Guillermo Castro-Rivera wrote 9,501 Medicare Part D claims in 2024
In 2024, Dr. Castro-Rivera wrote 9,501 Medicare Part D claims for 570 patients. 87% of them were for generic drugs. CMS names the drug for 8,771 of them, across 120 drugs with 11 or more claims each, at $652,127 in total drug cost. In 2023, CMS named 9,117 claims across 126 drugs.
Dr. Castro-Rivera's Part D claims by kind of drug, 2024
- Generic8,292 claims87%
- Brand-name1,154 claims12%
- Other55 claims1%
Dr. Castro-Rivera'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. Castro-Rivera's Part D claims, 2024
- Opioids1%51 of 9,501 claims
- Antibiotics1%128 of 9,501 claims
- Antipsychotics, patients 65 and over0%18 of 9,501 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: 9,1172024: 8,7714%
Drugs named by CMS: 120 in 2024, 126 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
How Dr. Samuel Guillermo Castro-Rivera takes part in Medicare
Dr. Castro-Rivera accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Samuel Guillermo Castro-Rivera received $138 in industry payments from 2018 to 2024
CMS Open Payments shows 2 general payments to Dr. Castro-Rivera from 2 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $119.
General payments to Dr. Castro-Rivera by program year, 2018 to 2024
Companies that paid Dr. Castro-Rivera the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Samuel Guillermo Castro-Rivera'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 |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 Guillermo Castro-Rivera
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 Guillermo Castro-Rivera's NPI number?
Dr. Samuel Guillermo Castro-Rivera's NPI number is 1780646786. It was assigned on April 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Samuel Guillermo Castro-Rivera?
Dr. Samuel Guillermo Castro-Rivera is a general practice physician in Bayamon, Puerto Rico. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Samuel Guillermo Castro-Rivera practice?
Dr. Castro-Rivera practices at 43 Cll 34, Bayamon, PR 00961.
What is Dr. Samuel Guillermo Castro-Rivera's office phone number?
The practice phone on file for Dr. Castro-Rivera is (787) 797-5365.
What is Dr. Samuel Guillermo Castro-Rivera's medical license number?
Dr. Castro-Rivera holds Puerto Rico license 16024.
Does Dr. Samuel Guillermo Castro-Rivera accept Medicare?
Yes. CMS data shows Dr. Castro-Rivera billed Medicare for 42 services in 2019, and Dr. Castro-Rivera accepts Medicare assignment.
What services does Dr. Samuel Guillermo Castro-Rivera bill to Medicare?
In 2019, Dr. Castro-Rivera's most billed Medicare services were office visit, established patient (99213).
What drugs does Dr. Samuel Guillermo Castro-Rivera prescribe most?
In 2024 Medicare Part D data, Dr. Castro-Rivera's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Samuel Guillermo Castro-Rivera received payments from drug or device companies?
CMS Open Payments shows $138 in general payments to Dr. Castro-Rivera from 2 companies from 2018 to 2024. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Samuel Guillermo Castro-Rivera been practicing?
Dr. Castro-Rivera graduated from medical school in 2004, 22 years ago.
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