Julio Cesar Mantero Hormazabal, M.D.
Internal Medicine Physician · Bayamon, PR
Julio Cesar Mantero Hormazabal, M.D. is an internal medicine physician with a practice address in Bayamon, Puerto Rico, and NPI 1124024542, issued on Jun 21, 2005. Check the license (Puerto Rico 8555, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Julio Cesar Mantero Hormazabal
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 8555 PR
Self-reported in NPPES; status is on the state search - Practice location
- 1845 Carr 2, Bayamon, PR 00959
- Phone
- (787) 798-1645
- Enumerated
- Jun 21, 2005
- Record last updated
- May 24, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (787) 798-1604
- Medicare enrollment
- Enrolled (PECOS I20050815000573); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Also registered at 1845 Carr 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Julio Cesar Mantero Hormazabal 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 8555Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.2 times the Medicare Part D claims of the average internal medicine physician in 2024
16,555 Medicare Part D claims for 672 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Atorvastatin Calcium1,548 claims
- Levothyroxine Sodium796 claims
- Losartan Potassium641 claims
- Gabapentin628 claims
- Metoprolol Succinate542 claims
- Amlodipine Besylate536 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.
Julio Cesar Mantero Hormazabal among 1,146 internal medicine physician records in Puerto Rico
Julio Cesar Mantero Hormazabal, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated1982 · median 1996 among the 595 with a school on file
- Record last updated2017 · 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).
117 internal medicine physician records list a practice address in Bayamon
They are 117 of the 2,958 NPPES records with a practice address in Bayamon, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in Bayamon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Carlos Acosta, MDBayamon, PR 009591821092586
- Francisco Aldarondo Garcia, MDBayamon, PR 009591689620544
- Orlando Aponte Aponte, MDFACRBayamon, PR 009591104817725
- Luis Gonzalez-Ingles, MDBayamon, PR 009591962490219
- Francisco Loubriel Ortiz, M.D.Bayamon, PR 009591659371391
- Ivan Ramos, MDBaymon, PR 009591184602781
- Angel Rivera Cotto, MDBayamon, PR 009591831171636
- Cesar Rivera Reveron, M.D.Bayamon, PR 009591215985304
Common questions
What is Julio Cesar Mantero Hormazabal, M.D.'s NPI number?
Julio Cesar Mantero Hormazabal, M.D.'s National Provider Identifier (NPI) is 1124024542, issued on Jun 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Julio Cesar Mantero Hormazabal, M.D. located?
The NPPES record lists a practice address at 1845 Carr 2, Bayamon, PR, 00959. Phone: (787) 798-1645. Providers update this record themselves, so call before visiting.
How can I verify Julio Cesar Mantero Hormazabal, M.D.'s license?
NPPES lists Puerto Rico license number 8555, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Julio Cesar Mantero Hormazabal, M.D. prescribe under Medicare Part D?
In 2024, Julio Cesar Mantero Hormazabal, M.D. had 16,555 Medicare Part D claims for 672 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.