Dr. Carlos Jose Nassar, MD
- Medicare services, 2024
- 326
- Medicare patients, 2024
- 264
- Part D claims, 2024
- 452
- Hospital affiliations
- 2
- Medical groups
- 12
- Practice address
- 355 Ave Font Martelo, Humacao, PR 00791
- Practice phone
- Call (787) 852-0768
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Carlos Jose Nassar is a diagnostic radiologist in Humacao, Puerto Rico
Dr. Nassar practices at Ryder Memorial Hospital in Humacao, Puerto Rico, part of Ryder Memorial Hospital.
Dr. Nassar's NPI, 1922002559, was assigned on June 10, 2005. Dr. Nassar graduated from University of Puerto Rico School of Medicine in 1994. Dr. Nassar holds Puerto Rico license 12672.
- NPI
- 1922002559NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193810331
- NPI enumeration date
- June 10, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 852-0768
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Carlos Jose Nassar practices at Ryder Memorial Hospital in Humacao, Puerto Rico
Dr. Nassar's primary practice is Ryder Memorial Hospital, at 355 Ave Font Martelo, Humacao, PR 00791 in Humacao County. The practice phone is (787) 852-0768.
- Ryder Memorial Hospital355 Ave Font Martelo, Humacao, PR 00791 · Humacao CountyPhone(787) 852-0768
Source: Dmand AI Affiliation Data
Dr. Carlos Jose Nassar is affiliated with 13 sites of care and 12 medical groups
Dr. Nassar's primary practice is Ryder Memorial Hospital in Humacao, Puerto Rico, part of Ryder Memorial Hospital. Dr. Nassar is also affiliated with Hospital Menonita Humacao. The medical group on file is Mennonite General Hospital. Dmand AI also links Dr. Nassar to 11 more group practices and clinics and 11 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Carlos Jose Nassar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nassar practices, 13 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ryder Memorial Hospital | Available with a free account |
| +12 more sites and 11 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Ryder Memorial Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Carlos Jose Nassar is one of 167 diagnostic radiologists in Puerto Rico
Diagnostic radiology is Dr. Nassar's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Nassar is licensed in Puerto Rico.
Specialties and state licenses
- Diagnostic radiology, Puerto RicoPrimary
Diagnostic radiologists near Dr. Nassar
Counts of diagnostic radiologists 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. Carlos Jose Nassar billed Medicare for 326 services in 2024
CMS data shows 326 Medicare services from Dr. Nassar across 11 procedure codes in 2024, for 264 Medicare patients. Medicare paid $11,437 for them.
Dr. Nassar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 4002024: 32619%
Where Dr. Nassar's Medicare services took place, 2024
- In an office7623%
- In a facility25077%
Dr. Nassar compared with the Puerto Rico median for diagnostic radiologists, 2024
- Dr. Nassar
- Puerto Rico median
- Medicare services
- 326vs 1122.9 times
- Medicare patients
- 264vs 1132.3 times
- Part D claims
- 451vs 3015.0 times
Medians across 160 diagnostic radiologists in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Nassar'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Carlos Jose Nassar treated 264 Medicare patients in 2024, average age 75
CMS counts 264 Medicare patients who saw Dr. Nassar in 2024. The largest group is 75 to 84, with 99 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.49, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nassar's median patient age at 71, with 82% women.
Dr. Nassar's Medicare patients by age, 2024
Dr. Nassar's Medicare patients by sex, 2024
- Women16763%
- Men9737%
Chronic conditions among Dr. Nassar's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes52%
- Arthritis42%
- Chronic kidney disease33%
- Ischemic heart disease23%
- Heart failure21%
- Cancer19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nassar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women82%
- Men18%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Carlos Jose Nassar wrote 452 Medicare Part D claims in 2024
In 2024, Dr. Nassar wrote 452 Medicare Part D claims for 433 patients. 77% of them were for generic drugs. CMS names the drug for 451 of them, across 1 drug with 11 or more claims each, at $4,157 in total drug cost. In 2023, CMS named 419 claims across 1 drug.
Dr. Nassar's Part D claims by kind of drug, 2024
- Generic346 claims77%
- Brand-name106 claims23%
Dr. Nassar'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: 4192024: 4518%
Drugs named by CMS: 1 in 2024, 1 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. Carlos Jose Nassar takes part in Medicare
Dr. Nassar 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. Carlos Jose Nassar graduated from University of Puerto Rico School of Medicine
Dr. Nassar graduated from University of Puerto Rico School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Carlos Jose Nassar'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 DataDmand AI Org Hierarchy 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Carlos Jose Nassar
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. Carlos Jose Nassar's NPI number?
Dr. Carlos Jose Nassar's NPI number is 1922002559. It was assigned on June 10, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Carlos Jose Nassar?
Dr. Carlos Jose Nassar is a diagnostic radiologist in Humacao, Puerto Rico. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Carlos Jose Nassar practice?
Dr. Nassar practices at 355 Ave Font Martelo, Humacao, PR 00791. Dr. Nassar's primary practice is Ryder Memorial Hospital in Humacao, Puerto Rico, part of Ryder Memorial Hospital. Dmand AI also links Dr. Nassar to 11 group practices and clinics and 11 medical groups.
What is Dr. Carlos Jose Nassar's office phone number?
The practice phone on file for Dr. Nassar is (787) 852-0768.
What is Dr. Carlos Jose Nassar's medical license number?
Dr. Nassar holds Puerto Rico license 12672.
Which hospitals is Dr. Carlos Jose Nassar affiliated with?
Dr. Nassar practices at Ryder Memorial Hospital in Humacao, Puerto Rico. Dr. Nassar is also affiliated with Hospital Menonita Humacao.
What medical group is Dr. Carlos Jose Nassar part of?
Dr. Nassar is linked to Mennonite General Hospital. Dmand AI links Dr. Nassar to 11 more medical groups.
Does Dr. Carlos Jose Nassar accept Medicare?
Yes. CMS data shows Dr. Nassar billed Medicare for 326 services in 2024, and Dr. Nassar accepts Medicare assignment.
How many Medicare patients does Dr. Carlos Jose Nassar see?
CMS counts 264 Medicare patients who saw Dr. Nassar in 2024, with an average age of 75.
What services does Dr. Carlos Jose Nassar bill to Medicare?
In 2024, Dr. Nassar's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (74176) and diagnostic imaging (70450).
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Where did Dr. Carlos Jose Nassar go to medical school?
Dr. Nassar graduated from University of Puerto Rico School of Medicine in 1994.
What drugs does Dr. Carlos Jose Nassar prescribe most?
In 2024 Medicare Part D data, Dr. Nassar's most prescribed drugs by claims were Methylprednisolone.
How long has Dr. Carlos Jose Nassar been practicing?
Dr. Nassar graduated from medical school in 1994, 32 years ago.
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