GRETTZEL MACHADO MD
NPI 1538731674
General Practice in San German, PR
About Grettzel Machado Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRETTZEL MACHADO MD (NPI 1538731674) is an individual general practice provider in San German, Puerto Rico, licensed in Puerto Rico (22970) and active in the NPI registry since July 2021. She is enrolled in Medicare PECOS.
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 (PECOS)
Grettzel Machado Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Grettzel Machado reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San German, PR 00683
- Reassigned Medicare billing, Puerto Rico enrollment
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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Grettzel Machado's NPI number?
The NPI number for Grettzel Machado is 1538731674. It was assigned to this individual provider in the NPPES registry on July 16, 2021.
Where is Grettzel Machado located?
Grettzel Machado practices at 2 Calle Colon, San German, PR 00683. The listed phone number is (939) 288-9901.
What is Grettzel Machado's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Grettzel Machado enrolled in Medicare?
Yes. Grettzel Machado is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Grettzel Machado's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grettzel Machado reassigns Medicare benefits to Martinez Machado Medical Services LLC (San German, 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 Grettzel Machado'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 Grettzel Machado was last updated on March 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Grettzel Machado, MD · NPI 1538731674
General Practice physician in San German, Puerto Rico. Individual provider, active in the CMS NPPES registry since July 16, 2021.
## Identity
- **NPI:** 1538731674 (Entity type: Individual)
- **Enumerated:** July 16, 2021
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **State license:** 22970 (Puerto Rico)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2 CALLE COLON, San German, PR 00683-3911
- **Phone:** (939) 288-9901
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Martinez Machado Medical Services LLC (NPI 1396545554, San German, PR), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 5, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1538731674) · Data from the CMS NPPES public registry.