DR. MARIELA DIAZ M.D.
NPI 1750673752
Physical Medicine & Rehabilitation in San Juan, PR
About Dr. Mariela Diaz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARIELA DIAZ M.D. (NPI 1750673752) is an individual physical medicine & rehabilitation provider in San Juan, Puerto Rico, licensed in Puerto Rico (18955) and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS and is a graduate of University Of Puerto Rico School Of Medicine (2011).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Mariela Diaz M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Mariela Diaz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Isabel, PR 00757
- Reassigned Medicare billing, Puerto Rico enrollment
- 3 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN JUAN, PR 00921
SAN JUAN, PR 00921
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mariela Diaz's NPI number?
The NPI number for Mariela Diaz is 1750673752. It was assigned to this individual provider in the NPPES registry on May 9, 2011.
Where is Mariela Diaz located?
Mariela Diaz practices at 10 Calle Casia, San Juan, PR 00921. The listed phone number is (787) 641-7582.
What is Mariela Diaz's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Mariela Diaz enrolled in Medicare?
Yes. Mariela Diaz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Mariela Diaz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariela Diaz reassigns Medicare benefits to Servicios Fisiatricos Raber (Santa Isabel, PR). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mariela Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mariela Diaz was last updated on December 10, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.