Nydia M. Lopez Diaz, M.D.
General Practice Physician · Toa Alta, PR
Nydia M. Lopez Diaz, M.D. is a general practice physician with a practice address in Toa Alta, Puerto Rico, and NPI 1578591772, issued on Jun 28, 2006. Check the license (Puerto Rico 11254, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nydia M. Lopez Diaz
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 11254 PR
Self-reported in NPPES; status is on the state search - Practice location
- Carr. 828 KM. 0.1, Toa Alta, PR 00953
- Phone
- (787) 279-3297
- Enumerated
- Jun 28, 2006
- Record last updated
- Aug 14, 2024
- Fax
- (787) 279-3297
- Medicare enrollment
- Enrolled (PECOS I20110523000426); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 4,170 in Puerto Rico → Look up another NPI →
Verify Nydia M. Lopez Diaz 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 11254Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.5 times the Medicare Part D claims of the average general practice physician in 2024
13,536 Medicare Part D claims for 705 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Simvastatin470 claims
- Lisinopril453 claims
- Amlodipine Besylate447 claims
- Atorvastatin Calcium434 claims
- Losartan Potassium428 claims
- Synthroid375 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.
Nydia M. Lopez Diaz among 4,170 general practice physician records in Puerto Rico
Nydia M. Lopez Diaz, M.D. 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 65% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 29% of these records are
- Graduated1985 · median 2004 among the 1,228 with a school on file
- Record last updated2024 · 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).
29 general practice physician records list a practice address in Toa Alta
They are 29 of the 325 NPPES records with a practice address in Toa Alta, and 4,170 general practice physician records in Puerto Rico.
All 4,170 in Puerto Rico → Every provider in Toa Alta → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Itza Chevres, M.D.Toa Alta, PR 009531669413720
- Jose Cruz, M.D.Toa Alta, PR 009531194712026
- Jose Cumba GuerreroToa Alta, PR 009531811041825
- Omayra Feliciano, M.D.Toa Alta, PR 009531609991710
- Orlando Fonseca Martinez, MDToa Alta, PR 009531760564611
- Benjamin Gonzalez, M.DToa Alta, PR 009531659322311
- Sor Gonzalez Hernandez, M.D.Toa Alta, PR 009531245370253
- Jose Jimenez, M.D.Toa Alta, PR 009531578506242
Common questions
What is Nydia M. Lopez Diaz, M.D.'s NPI number?
Nydia M. Lopez Diaz, M.D.'s National Provider Identifier (NPI) is 1578591772, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nydia M. Lopez Diaz, M.D. located?
The NPPES record lists a practice address at Carr. 828 KM. 0.1, Toa Alta, PR, 00953. Phone: (787) 279-3297. Providers update this record themselves, so call before visiting.
How can I verify Nydia M. Lopez Diaz, M.D.'s license?
NPPES lists Puerto Rico license number 11254, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Nydia M. Lopez Diaz, M.D. prescribe under Medicare Part D?
In 2024, Nydia M. Lopez Diaz, M.D. had 13,536 Medicare Part D claims for 705 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.