Armando Luis Nazario Guirau, M.D.
Specialist · San Juan, PR
Armando Luis Nazario Guirau, M.D. is a specialist with a practice address in San Juan, Puerto Rico, and NPI 1962437814, issued on Jul 11, 2006. Check the license with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Armando Luis Nazario Guirau
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- Practice location
- 400 Ave FD Roosevelt, San Juan, PR 00918
- Phone
- (787) 250-7676
- Enumerated
- Jul 11, 2006
- Record last updated
- Feb 29, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (787) 756-5210
- Medicare enrollment
- Enrolled (PECOS I20070412000062); accepts Medicare assignment
- Medical or professional school
- University Of Puerto Rico School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest specialist records → All 574 in Puerto Rico → Look up another NPI →
Also registered at 400 Ave FD Roosevelt
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frankie Alvarado, M.D.Pulmonary Disease Physician1730219098
- Lydia ArillEndodontics1205921053
- Luis Arturi, MDGastroenterology Physician1063407591
- Hilda Bithorn, O.D.Optometrist1265625966
- Maximo Blondet Passalacqua, MD,FCCPSpecialist1184614927
- Ricardo Brau, M.D.Neurological Surgery Physician1114939949
Verify Armando Luis Nazario Guirau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average specialist in 2024
570 Medicare Part D claims for 279 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin149 claims
- Nabumetone108 claims
- Diclofenac Potassium85 claims
- Celecoxib30 claims
- Diclofenac Sodium28 claims
- Methylprednisolone23 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
- Clinica Las Americas Guaynabo, IncBayamon, PR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Armando Luis Nazario Guirau among 574 specialist records in Puerto Rico
Armando Luis Nazario Guirau, M.D. is one of 574 specialist records with a practice address in Puerto Rico. 54% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 37% newer
- In a Medicare fileYes · 54% of these records are
- In the CMS Doctors and Clinicians fileYes · 26% of these records are
- Graduated1980 · median 1985 among the 147 with a school on file
- Record last updated2012 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X 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 specialist records list a practice address in San Juan
They are 162 of the 8,960 NPPES records with a practice address in San Juan, and 574 specialist records in Puerto Rico.
All 574 in Puerto Rico → Every provider in San Juan → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Anibelle AltieriHato Rey, PR 009181629049580
- Eliezer Benero-Natal, M.D.San Juan, PR 009181316939648
- Miguel Berrios, MDSan Juan, PR 009181629069448
- Maximo Blondet Passalacqua, MD,FCCPSan Juan, PR 009181184614927
- Ralph Conaway Lanuza, M.D.Hato Rey, PR 009181043216401
- Magda Costa, MDSan Juan, PR 009181689654139
- David Garcia Trias, MDSan Juan, PR 009181154312163
- Carlos Grovas, MDSan Juan, PR 009181366448755
Common questions
What is Armando Luis Nazario Guirau, M.D.'s NPI number?
Armando Luis Nazario Guirau, M.D.'s National Provider Identifier (NPI) is 1962437814, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Armando Luis Nazario Guirau, M.D. located?
The NPPES record lists a practice address at 400 Ave FD Roosevelt, San Juan, PR, 00918. Phone: (787) 250-7676. Providers update this record themselves, so call before visiting.
How can I verify Armando Luis Nazario Guirau, M.D.'s license?
Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Armando Luis Nazario Guirau, M.D. prescribe under Medicare Part D?
In 2024, Armando Luis Nazario Guirau, M.D. had 570 Medicare Part D claims for 279 beneficiaries; the average among specialist prescribers was 1,380. 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.