William Fernando Diaz, D.C.
Chiropractor · Arecibo, PR
William Fernando Diaz, D.C. is a chiropractor with a practice address in Arecibo, Puerto Rico, and NPI 1386634004, issued on Oct 25, 2005. Check the license (Puerto Rico 326, as entered in NPPES) with the Puerto Rico board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Fernando Diaz
- Credential
- D.C.
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 326 PR
Self-reported in NPPES; status is on the state search - Practice location
- Urb. San Lorenzo, Arecibo, PR 00612
- Phone
- (787) 816-8119
- Enumerated
- Oct 25, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (787) 816-5687
- Medicare enrollment
- Enrolled (PECOS I20060104000802); accepts Medicare assignment
- Medical or professional school
- Life Chiropractic College, 1996
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 574 in Puerto Rico → Look up another NPI →
Verify William Fernando 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 326Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Fernando Diaz among 574 chiropractor records in Puerto Rico
William Fernando Diaz, D.C. is one of 574 chiropractor records with a practice address in Puerto Rico. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileNo · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated1996 · median 2016 among the 229 with a school on file
- Record last updated2026 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 chiropractor records list a practice address in Arecibo
They are 10 of the 976 NPPES records with a practice address in Arecibo, and 574 chiropractor records in Puerto Rico. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 574 in Puerto Rico → Every provider in Arecibo → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Marcos Arraiza, D.C.Arecibo, PR 006121316945389
- Keishla Garcia Reyes, DCArecibo, PR 006121316596125
- Amalio JimenezArecibo, PR 006121235141433
- Eduardo Maldonado Molinari, DCArecibo, PR 006121740926708
- Stephannie Roman Moreno, DCArecibo, PR 006121659017614
- Adalberto Rosado, DCArecibo, PR 006121932439221
- Melvin Ruiz, D.C.Arecibo, PR 006131508909649
- Juan Lopez-Borrero, DC, BSAnasco, PR 006101093500969
Common questions
What is William Fernando Diaz, D.C.'s NPI number?
William Fernando Diaz, D.C.'s National Provider Identifier (NPI) is 1386634004, issued on Oct 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Fernando Diaz, D.C. located?
The NPPES record lists a practice address at Urb. San Lorenzo, Arecibo, PR, 00612. Phone: (787) 816-8119. Providers update this record themselves, so call before visiting.
How can I verify William Fernando Diaz, D.C.'s license?
NPPES lists Puerto Rico license number 326, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity 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. 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.