Dr. Ernesto X. Marrero De Gracia, MD
- Medicare services, 2024
- 166
- Medicare patients, 2024
- 42
- Part D claims, 2024
- 12,051
- Hospital affiliations
- 1
- Industry payments
- $4,891
- Practice address
- 70 Cll Santa Cruz, Bayamon, PR 00959
- Practice phone
- Call (787) 620-4747
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hospital Hima - San Pablo Bayamon
Bayamon, Puerto Rico
Find Dr. Marrero De Gracia'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. Ernesto X. Marrero De Gracia is an internist in Bayamon, Puerto Rico
Dr. Marrero De Gracia practices at Hospital Hima - San Pablo Bayamon in Bayamon, Puerto Rico.
Dr. Marrero De Gracia's NPI, 1295743367, was assigned on August 4, 2006. Dr. Marrero De Gracia holds Puerto Rico license 15171.
- NPI
- 1295743367NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648274498
- NPI enumeration date
- August 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 620-4747
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ernesto X. Marrero De Gracia practices at Hospital Hima - San Pablo Bayamon in Bayamon, Puerto Rico
Dr. Marrero De Gracia's primary practice is Hospital Hima - San Pablo Bayamon, at 70 Cll Santa Cruz, Bayamon, PR 00959 in Bayamon County. The practice phone is (787) 620-4747.
- Hospital Hima - San Pablo Bayamon70 Cll Santa Cruz, Bayamon, PR 00959 · Bayamon CountyPhone(787) 620-4747
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ernesto X. Marrero De Gracia is affiliated with 3 sites of care
Dr. Marrero De Gracia's primary practice is Hospital Hima - San Pablo Bayamon in Bayamon, Puerto Rico. Dr. Marrero De Gracia is also affiliated with Hospital Auxilio Mutuo San Pablo. Dmand AI also links Dr. Marrero De Gracia to 1 more physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ernesto X. Marrero De Gracia's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marrero De Gracia practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hospital Hima - San Pablo Bayamon | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ernesto X. Marrero De Gracia is one of 805 internists in Puerto Rico
Internal medicine is Dr. Marrero De Gracia's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Marrero De Gracia is licensed in Puerto Rico.
Specialties and state licenses
- Internal medicine, Puerto RicoPrimary
Internists near Dr. Marrero De Gracia
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. Ernesto X. Marrero De Gracia billed Medicare for 166 services in 2024
CMS data shows 166 Medicare services from Dr. Marrero De Gracia across 2 procedure codes in 2024, for 42 Medicare patients. Medicare paid $9,708 for them.
Dr. Marrero De Gracia's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1232024: 16635%
Where Dr. Marrero De Gracia's Medicare services took place, 2024
- In an office7243%
- In a facility9457%
Dr. Marrero De Gracia compared with the Puerto Rico median for internists, 2024
- Dr. Marrero De Gracia
- Puerto Rico median
- Medicare services
- 166vs 503.3 times
- Medicare patients
- 42vs 2383% above
- Part D claims
- 11,304vs 2,7284.1 times
Medians across 820 internists in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Marrero De Gracia'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. Marrero De Gracia and other internists in Puerto Rico.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ernesto X. Marrero De Gracia treated 42 Medicare patients in 2024, average age 78
CMS counts 42 Medicare patients who saw Dr. Marrero De Gracia in 2024. The largest group is 75 to 84, with 26 patients. 75% of them have diabetes, and 75% have high blood pressure. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marrero De Gracia's median patient age at 81, with 42% women.
Dr. Marrero De Gracia's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marrero De Gracia's Medicare patients by sex, 2024
- Women2355%
- Men1945%
Chronic conditions among Dr. Marrero De Gracia's Medicare patients, 2024
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease36%
- Chronic kidney disease29%
- Depression29%
- Mood disorders29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marrero De Gracia's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women42%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ernesto X. Marrero De Gracia wrote 12,051 Medicare Part D claims in 2024
In 2024, Dr. Marrero De Gracia wrote 12,051 Medicare Part D claims for 664 patients. 84% of them were for generic drugs. CMS names the drug for 11,304 of them, across 152 drugs with 11 or more claims each, at $1,020,822 in total drug cost. In 2023, CMS named 11,077 claims across 136 drugs.
Dr. Marrero De Gracia's Part D claims by kind of drug, 2024
- Generic10,111 claims84%
- Brand-name1,844 claims15%
- Other96 claims1%
Dr. Marrero De Gracia'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. Marrero De Gracia's Part D claims, 2024
- Opioids0%17 of 12,051 claims
- Antibiotics1%130 of 12,051 claims
- Antipsychotics, patients 65 and over1%79 of 12,051 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: 11,0772024: 11,3042%
Drugs named by CMS: 152 in 2024, 136 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. Ernesto X. Marrero De Gracia takes part in Medicare
Dr. Marrero De Gracia 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. Ernesto X. Marrero De Gracia received $4,891 in industry payments from 2016 to 2025
CMS Open Payments shows 183 general payments to Dr. Marrero De Gracia from 16 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,258.
General payments to Dr. Marrero De Gracia by program year, 2016 to 2025
General payments to Dr. Marrero De Gracia by kind, 2016 to 2025
- Food and beverage$4,82199%
- Education$691%
Companies that paid Dr. Marrero De Gracia 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. Ernesto X. Marrero De Gracia'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 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) |
| 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. Ernesto X. Marrero De Gracia
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. Ernesto X. Marrero De Gracia's NPI number?
Dr. Ernesto X. Marrero De Gracia's NPI number is 1295743367. It was assigned on August 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ernesto X. Marrero De Gracia?
Dr. Ernesto X. Marrero De Gracia is an internist in Bayamon, Puerto Rico. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ernesto X. Marrero De Gracia practice?
Dr. Marrero De Gracia practices at 70 Cll Santa Cruz, Bayamon, PR 00959. Dr. Marrero De Gracia's primary practice is Hospital Hima - San Pablo Bayamon in Bayamon, Puerto Rico. Dmand AI also links Dr. Marrero De Gracia to 1 physician office.
What is Dr. Ernesto X. Marrero De Gracia's office phone number?
The practice phone on file for Dr. Marrero De Gracia is (787) 620-4747.
What is Dr. Ernesto X. Marrero De Gracia's medical license number?
Dr. Marrero De Gracia holds Puerto Rico license 15171.
Which hospitals is Dr. Ernesto X. Marrero De Gracia affiliated with?
Dr. Marrero De Gracia is affiliated with Hospital Auxilio Mutuo San Pablo.
Does Dr. Ernesto X. Marrero De Gracia accept Medicare?
Yes. CMS data shows Dr. Marrero De Gracia billed Medicare for 166 services in 2024, and Dr. Marrero De Gracia accepts Medicare assignment.
How many Medicare patients does Dr. Ernesto X. Marrero De Gracia see?
CMS counts 42 Medicare patients who saw Dr. Marrero De Gracia in 2024, with an average age of 78.
What services does Dr. Ernesto X. Marrero De Gracia bill to Medicare?
In 2024, Dr. Marrero De Gracia's most billed Medicare services were hospital inpatient care (99232) and office visit, established patient (99213).
What drugs does Dr. Ernesto X. Marrero De Gracia prescribe most?
In 2024 Medicare Part D data, Dr. Marrero De Gracia's most prescribed drugs by claims were Atorvastatin Calcium, Gabapentin and Losartan Potassium.
Has Dr. Ernesto X. Marrero De Gracia received payments from drug or device companies?
CMS Open Payments shows $4,891 in general payments to Dr. Marrero De Gracia from 16 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Ernesto X. Marrero De Gracia been practicing?
Dr. Marrero De Gracia graduated from medical school in 2001, 25 years ago.
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