Walter Nieves, MD
Ophthalmology Physician · Isabela, PR
Walter Nieves, MD is an ophthalmology physician with a practice address in Isabela, Puerto Rico, and NPI 1225007453, issued on Mar 17, 2006. Check the license (Puerto Rico 12791, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Walter Nieves
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 12791 PR
Self-reported in NPPES; status is on the state search - Practice location
- 3285 Ave Militar, Isabela, PR 00662
- Phone
- (787) 830-5784
- Enumerated
- Mar 17, 2006
- Record last updated
- Mar 10, 2026
- Fax
- (787) 830-2436
- Medicare enrollment
- Enrolled (PECOS I20101020001501); accepts Medicare assignment
- Medical or professional school
- University Of Puerto Rico School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 211 in Puerto Rico → Look up another NPI →
Verify Walter Nieves 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 12791Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% more Medicare Part D claims than the average ophthalmology physician in 2024
2,872 Medicare Part D claims for 415 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Latanoprost1,673 claims
- Levobunolol Hcl331 claims
- Prednisolone Acetate270 claims
- Brimonidine Tartrate120 claims
- Brimonidine Tartrate-Timolol85 claims
- Dorzolamide-Timolol75 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.
Walter Nieves among 211 ophthalmology physician records in Puerto Rico
Walter Nieves, MD is one of 211 ophthalmology physician records with a practice address in Puerto Rico. 96% 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 24% of them.
- NPI issued2006 · 24% of these records are older, 33% newer
- In a Medicare fileYes · 96% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated1994 · median 1994 among the 176 with a school on file
- Record last updated2026 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Puerto Rico
There are 211 ophthalmology physician records in Puerto Rico.
All 211 in Puerto Rico → Every provider in Isabela → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Miguel Garcia-Llorens, M.D.Hatillo, PR 006591124138623
- Luma Al-Attar, MDManati, PR 006741184667792
- Jose Colon-Vaquer, M.D.Manati, PR 006741144205485
- Edgardo Negron, M.D.Manati, PR 006741629085006
- Elsie Ortiz Goveo, M.D.Manati, PR 006741497726004
- Juan Perez, M.D.Manati, PR 006741174698567
- Vilma Perez, M.D.Manati, PR 006741497821326
- Alberto Ortiz-Arroyo, M.D.Moca, PR 006761396925434
Common questions
What is Walter Nieves, MD's NPI number?
Walter Nieves, MD's National Provider Identifier (NPI) is 1225007453, issued on Mar 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Walter Nieves, MD located?
The NPPES record lists a practice address at 3285 Ave Militar, Isabela, PR, 00662. Phone: (787) 830-5784. Providers update this record themselves, so call before visiting.
How can I verify Walter Nieves, MD's license?
NPPES lists Puerto Rico license number 12791, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Walter Nieves, MD prescribe under Medicare Part D?
In 2024, Walter Nieves, MD had 2,872 Medicare Part D claims for 415 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.