Francisco Jose Diaz-Lozada, M.D.
Internal Medicine Physician · Rio Piedras, PR
Francisco Jose Diaz-Lozada, M.D. is an internal medicine physician with a practice address in Rio Piedras, Puerto Rico, and NPI 1457448227, issued on Oct 5, 2006. Check the license (Puerto Rico 15430, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Francisco Jose Diaz-Lozada
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 15430 PR
Self-reported in NPPES; status is on the state search - Practice location
- Sequoia St. A3-1, Rio Piedras, PR 00926
- Phone
- (787) 399-3620
- Enumerated
- Oct 5, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (787) 756-6497
- Medicare enrollment
- Enrolled (PECOS I20070905000177); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Verify Francisco Jose Diaz-Lozada 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 15430Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,024 Medicare Part D claims for 228 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Synthroid111 claims
- Losartan Potassium98 claims
- Atorvastatin Calcium86 claims
- Rosuvastatin Calcium85 claims
- Metoprolol Succinate79 claims
- Montelukast Sodium67 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.
Industry payments in 2024: $165.96
2 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Physiotherapy Rehabilitation Services IncBayamon, PR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Francisco Jose Diaz-Lozada among 1,146 internal medicine physician records in Puerto Rico
Francisco Jose Diaz-Lozada, M.D. is one of 1,146 internal medicine physician records with a practice address in Puerto Rico. 79% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2003 · median 1996 among the 595 with a school on file
- Record last updated2007 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Rio Piedras
They are 18 of the 372 NPPES records with a practice address in Rio Piedras, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in Rio Piedras → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Fernando Abreu GonzalezSan Juan, PR 009261437100930
- Jose Cuebas Vazquez, MDSan Juan, PR 009261356339030
- Sandra Franqui Pagan, MDSan Juan, PR 009261427009950
- Ramon Gonzalez, M.D.San Juan, PR 009261114984697
- Karen Larroy, M.D.San Juan, PR 009261235110164
- Tomas Lugo, MDSan Juan, PR 009261356341416
- Antonia Marques, M.D.San Juan, PR 009261275579344
- Margarita Medina, M.D.San Juan, PR 009261518991017
Common questions
What is Francisco Jose Diaz-Lozada, M.D.'s NPI number?
Francisco Jose Diaz-Lozada, M.D.'s National Provider Identifier (NPI) is 1457448227, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Francisco Jose Diaz-Lozada, M.D. located?
The NPPES record lists a practice address at Sequoia St. A3-1, Rio Piedras, PR, 00926. Phone: (787) 399-3620. Providers update this record themselves, so call before visiting.
How can I verify Francisco Jose Diaz-Lozada, M.D.'s license?
NPPES lists Puerto Rico license number 15430, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Francisco Jose Diaz-Lozada, M.D. prescribe under Medicare Part D?
In 2024, Francisco Jose Diaz-Lozada, M.D. had 2,024 Medicare Part D claims for 228 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.