Grisselle M. Robaina Santiago, MD
General Practice Physician · Carolina, PR
Grisselle M. Robaina Santiago, MD is a general practice physician with a practice address in Carolina, Puerto Rico, and NPI 1821719857, issued on Sep 8, 2022. Check the license (Puerto Rico 22874, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Grisselle M. Robaina Santiago
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 22874 PR
Self-reported in NPPES; status is on the state search - Practice location
- O37 Calle 3, Carolina, PR 00983
- Phone
- (939) 281-9016
- Enumerated
- Sep 8, 2022
- Record last updated
- Feb 20, 2026
- Medicare enrollment
- Enrolled (PECOS I20240718003203); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 4,170 in Puerto Rico → Look up another NPI →
Verify Grisselle M. Robaina Santiago 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 22874Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average general practice physician in 2024
303 Medicare Part D claims for 159 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
Most prescribed
- Famotidine99 claims
- Ketorolac Tromethamine30 claims
- Methylprednisolone24 claims
- Dexamethasone13 claims
- Metronidazole12 claims
- Amoxicillin-Clavulanate Potass11 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.
Bills Medicare through one group practice
- Physician Healthcare Administration LLCMayaguez, PR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grisselle M. Robaina Santiago among 4,170 general practice physician records in Puerto Rico
Grisselle M. Robaina Santiago, MD is one of 4,170 general practice physician records with a practice address in Puerto Rico. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 83% of them.
- NPI issued2022 · 83% of these records are older, 10% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 29% of these records are
- Graduated2017 · median 2004 among the 1,228 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
162 general practice physician records list a practice address in Carolina
They are 162 of the 1,535 NPPES records with a practice address in Carolina, and 4,170 general practice physician records in Puerto Rico.
All 4,170 in Puerto Rico → Every provider in Carolina → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Rosita Arzuaga, MDCarolina, PR 009831538143979
- Jossepp Berry-Polanco, MDCarolina, PR 009831831185271
- Isaac Gonzalez, M.D.Toa Baja, PR 009831134280399
- Khadijah HamdallahCarolina, PR 009831831132513
- Luis Landestoy, MDCarolina, PR 009831346212388
- Eugenia Martinez-Mendez, MDCarolina, PR 009831881650653
- Carlos Mellado, MDCarolina, PR 009831104847268
- Ada Paisan Galban, MDCarolina, PR 009831588627137
Common questions
What is Grisselle M. Robaina Santiago, MD's NPI number?
Grisselle M. Robaina Santiago, MD's National Provider Identifier (NPI) is 1821719857, issued on Sep 8, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Grisselle M. Robaina Santiago, MD located?
The NPPES record lists a practice address at O37 Calle 3, Carolina, PR, 00983. Phone: (939) 281-9016. Providers update this record themselves, so call before visiting.
How can I verify Grisselle M. Robaina Santiago, MD's license?
NPPES lists Puerto Rico license number 22874, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Grisselle M. Robaina Santiago, MD prescribe under Medicare Part D?
In 2024, Grisselle M. Robaina Santiago, MD had 303 Medicare Part D claims for 159 beneficiaries; the average among general practice physician prescribers was 3,030. 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.