Dr. Cesar A. Rivera, MD
- Medicare services, 2024
- 123
- Medicare patients, 2024
- 42
- Part D claims, 2024
- 3,872
- Hospital affiliations
- 3
- Industry payments
- $1,974
- Practice address
- 65 Celso Barbosa, Arecibo, PR 00612
- Practice phone
- Call (787) 879-3828
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nefrologos Asociados Del Norte - Primary Care - Arecibo (Celso Barbosa)
Primary care practice · Arecibo, Puerto Rico
Find Dr. Rivera's professional email, personal email and mobile number
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Dr. Cesar A. Rivera is a nephrologist in San Juan, Puerto Rico
Dr. Rivera practices at Nefrologos Asociados Del Norte - Primary Care - Arecibo (Celso Barbosa) in Arecibo, Puerto Rico.
Dr. Rivera's NPI, 1386749620, was assigned on September 13, 2006. Dr. Rivera holds Puerto Rico license 10799.
- NPI
- 1386749620NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901975317
- NPI enumeration date
- September 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 879-3828
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Cesar A. Rivera practices in Arecibo and San Juan
Dr. Rivera's primary practice is Nefrologos Asociados Del Norte - Primary Care - Arecibo (Celso Barbosa), at 65 Celso Barbosa, Arecibo, PR 00612. The practice phone is (787) 879-3828. The NPI Registry lists Dr. Rivera's practice address as 210 Manuel Domenech, San Juan, PR 00918.
- Nefrologos Asociados Del Norte - Primary Care - Arecibo (Celso Barbosa)Primary65 Celso Barbosa, Arecibo, PR 00612Phone(787) 879-3828
- NPI Registry address210 Manuel Domenech, San Juan, PR 00918 · San Juan CountyPhone(787) 879-3828
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Cesar A. Rivera is affiliated with 6 sites of care and 1 medical group
Dr. Rivera's primary practice is Nefrologos Asociados Del Norte - Primary Care - Arecibo (Celso Barbosa) in Arecibo, Puerto Rico. Dr. Rivera is also affiliated with Doctors' Center Hospital Orlando Health - Manati. The medical group on file is Nefrólogos Asociados del Norte. Dmand AI also links Dr. Rivera to 2 more hospitals and 2 dialysis centers, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Cesar A. Rivera's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rivera practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nefrologos Asociados Del Norte - Primary Care - Arecibo (Celso Barbosa) | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Cesar A. Rivera is one of 122 nephrologists in Puerto Rico
Nephrology is Dr. Rivera's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Rivera is licensed in Puerto Rico.
Specialties and state licenses
- Nephrology, Puerto RicoPrimary
Nephrologists near Dr. Rivera
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. Cesar A. Rivera billed Medicare for 123 services in 2024
CMS data shows 123 Medicare services from Dr. Rivera across 3 procedure codes in 2024, for 42 Medicare patients. Medicare paid $22,315 for them. Every service was in an office.
Dr. Rivera's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 02024: 92
- Office and hospital visits
- 2023: 842024: 3163%
Dr. Rivera compared with the Puerto Rico median for nephrologists, 2024
- Dr. Rivera
- Puerto Rico median
- Medicare services
- 123vs 7076% above
- Medicare patients
- 42vs 3617% above
- Part D claims
- 3,399vs 1,5682.2 times
Medians across 124 nephrologists in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Rivera'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. Rivera and other nephrologists in Puerto Rico.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Cesar A. Rivera treated 42 Medicare patients in 2024, average age 67
CMS counts 42 Medicare patients who saw Dr. Rivera in 2024. The largest group is under 65, with 17 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 55% are also on Medicaid. Their average risk score is 6.24, 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. Rivera's median patient age at 63, with 30% women.
Dr. Rivera's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Rivera's Medicare patients by sex, 2024
- Women1229%
- Men3071%
Chronic conditions among Dr. Rivera's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- Diabetes64%
- High cholesterol62%
- Heart failure36%
- Ischemic heart disease33%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 63
Patient panel by sex, all payers
- Women30%
- Men70%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Cesar A. Rivera wrote 3,872 Medicare Part D claims in 2024
In 2024, Dr. Rivera wrote 3,872 Medicare Part D claims for 395 patients. 74% of them were for generic drugs. CMS names the drug for 3,399 of them, across 67 drugs with 11 or more claims each, at $530,518 in total drug cost. In 2023, CMS named 3,476 claims across 69 drugs.
Dr. Rivera's Part D claims by kind of drug, 2024
- Generic2,856 claims74%
- Brand-name992 claims26%
- Other24 claims1%
Dr. 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. Rivera's Part D claims, 2024
- Opioids1%21 of 3,872 claims
- Antibiotics2%71 of 3,872 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: 3,4762024: 3,3992%
Drugs named by CMS: 67 in 2024, 69 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. Cesar A. Rivera takes part in Medicare
Dr. Rivera 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. Cesar A. Rivera received $1,974 in industry payments from 2016 to 2025
CMS Open Payments shows 40 general payments to Dr. Rivera from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 86% of the total. AstraZeneca Pharmaceuticals LP paid the most, $409.
General payments to Dr. Rivera by program year, 2016 to 2025
General payments to Dr. Rivera by kind, 2016 to 2025
- Food and beverage$1,69886%
- Education$27614%
Companies that paid Dr. Rivera 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. Cesar A. Rivera's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Cesar A. 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. Cesar A. Rivera's NPI number?
Dr. Cesar A. Rivera's NPI number is 1386749620. It was assigned on September 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Cesar A. Rivera?
Dr. Cesar A. Rivera is a nephrologist in San Juan, Puerto Rico. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Cesar A. Rivera practice?
Dr. Rivera practices at 65 Celso Barbosa, Arecibo, PR 00612. Dr. Rivera also practices at 210 Manuel Domenech, San Juan, PR 00918. Dr. Rivera's primary practice is Nefrologos Asociados Del Norte - Primary Care - Arecibo (Celso Barbosa) in Arecibo, Puerto Rico. Dmand AI also links Dr. Rivera to 2 hospitals and 2 dialysis centers.
What is Dr. Cesar A. Rivera's office phone number?
The practice phone on file for Dr. Rivera is (787) 879-3828.
What is Dr. Cesar A. Rivera's medical license number?
Dr. Rivera holds Puerto Rico license 10799.
Which hospitals is Dr. Cesar A. Rivera affiliated with?
Dr. Rivera is affiliated with Doctors' Center Hospital Orlando Health - Manati. Dmand AI links Dr. Rivera to 2 more hospitals.
What medical group is Dr. Cesar A. Rivera part of?
Dr. Rivera is linked to Nefrólogos Asociados del Norte.
Does Dr. Cesar A. Rivera accept Medicare?
Yes. CMS data shows Dr. Rivera billed Medicare for 123 services in 2024, and Dr. Rivera accepts Medicare assignment.
How many Medicare patients does Dr. Cesar A. Rivera see?
CMS counts 42 Medicare patients who saw Dr. Rivera in 2024, with an average age of 67.
What services does Dr. Cesar A. Rivera bill to Medicare?
In 2024, Dr. Rivera's most billed Medicare services were dialysis (90960), office visit, established patient (99214) and dialysis (90961).
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What drugs does Dr. Cesar A. Rivera prescribe most?
In 2024 Medicare Part D data, Dr. Rivera's most prescribed drugs by claims were Farxiga, Losartan Potassium and Calcium Acetate.
Has Dr. Cesar A. Rivera received payments from drug or device companies?
CMS Open Payments shows $1,974 in general payments to Dr. Rivera from 20 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Cesar A. Rivera been practicing?
Dr. Rivera graduated from medical school in 1990, 36 years ago.
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