Isaac Omar Ruiz-Mercado, MD
Emergency Medicine Physician · Ponce, PR
Isaac Omar Ruiz-Mercado, MD is an emergency medicine physician with a practice address in Ponce, Puerto Rico, and NPI 1497064281, issued on Sep 28, 2010. Check the license (Puerto Rico 18588, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Isaac Omar Ruiz-Mercado
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 18588 PR
Self-reported in NPPES; status is on the state search - Practice location
- 917 Ave Tito Castro, Ponce, PR 00716
- Phone
- (787) 844-2080
- Enumerated
- Sep 28, 2010
- Record last updated
- Aug 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 278 in Puerto Rico → Look up another NPI →
Also registered at 917 Ave Tito Castro
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Viviana Alameda Bonilla, RNGeneral Practice Registered Nurse1134835929
- Ana Alvarez Pagan, MDPediatrics Physician1013495183
- Rosana Amador-Miranda, M.D.Infectious Disease Physician1790806297
Verify Isaac Omar Ruiz-Mercado in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
Search for license 18588Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average emergency medicine physician in 2024
230 Medicare Part D claims for 193 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Diclofenac Sodium35 claims
- Nabumetone31 claims
- Cephalexin26 claims
- Amoxicillin-Clavulanate Potass24 claims
- Prednisone16 claims
- Levofloxacin13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Isaac Omar Ruiz-Mercado among 278 emergency medicine physician records in Puerto Rico
Isaac Omar Ruiz-Mercado, MD is one of 278 emergency medicine physician records with a practice address in Puerto Rico. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 54% of them.
- NPI issued2010 · 54% of these records are older, 42% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 29% of these records are
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 emergency medicine physician records list a practice address in Ponce
They are 48 of the 3,338 NPPES records with a practice address in Ponce, and 278 emergency medicine physician records in Puerto Rico.
All 278 in Puerto Rico → Every provider in Ponce → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Stephanie Bermudez Rivera, M.D.Ponce, PR 007161275909459
- Andres Borrero Mendoza, M.D.Ponce, PR 007161528440229
- Dixie Caban - Acosta, M.D.Ponce, PR 007161730469230
- Marco Escobedo, M.D.Ponce, PR 007161386038750
- Jonathan Figueroa JimenezPonce, PR 007161861873622
- Carlos Garcia-Gubern, MDPonce, PR 007161720133382
- Andrea Gonzalez-Quintero, MDPonce, PR 007161295280469
- James Gratton, M.D.Ponce, PR 007161306279864
Common questions
What is Isaac Omar Ruiz-Mercado, MD's NPI number?
Isaac Omar Ruiz-Mercado, MD's National Provider Identifier (NPI) is 1497064281, issued on Sep 28, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Isaac Omar Ruiz-Mercado, MD located?
The NPPES record lists a practice address at 917 Ave Tito Castro, Ponce, PR, 00716. Phone: (787) 844-2080. Providers update this record themselves, so call before visiting.
How can I verify Isaac Omar Ruiz-Mercado, MD's license?
NPPES lists Puerto Rico license number 18588, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Isaac Omar Ruiz-Mercado, MD prescribe under Medicare Part D?
In 2024, Isaac Omar Ruiz-Mercado, MD had 230 Medicare Part D claims for 193 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.