SANTIAGO C. RAMIREZ MD PLLC
NPI 1912457649
Internal Medicine - Cardiovascular Disease in Nogales, AZ
About Santiago C. Ramirez Md Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SANTIAGO C. RAMIREZ MD PLLC (NPI 1912457649) is a healthcare organization registered as a cardiovascular disease in Nogales, Arizona and active in the NPI registry since October 2016. The organization maintains a secondary practice location in Tucson and lists Rosana Olivas, Billing Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Santiago C. Ramirez Md Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
7Medicare enrollment records show 7 clinicians reassign Medicare billing to Santiago C. Ramirez MD PLLC, which bills Medicare for the services they deliver. They are listed nearest first.
Clinicians, nearest first (7)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Santiago C. Ramirez MD PLLC's NPI number?
The NPI number for Santiago C. Ramirez MD PLLC is 1912457649. It was assigned to this organization in the NPPES registry on October 5, 2016.
Where is Santiago C. Ramirez MD PLLC located?
Santiago C. Ramirez MD PLLC is located at 1815 N Mastick Way, Nogales, AZ 85621. The listed phone number is (520) 415-1027.
What is Santiago C. Ramirez MD PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Santiago C. Ramirez MD PLLC enrolled in Medicare?
Yes. Santiago C. Ramirez MD PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Santiago C. Ramirez MD PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 3 Medicare specialties reassign their Medicare billing to Santiago C. Ramirez MD PLLC. A 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 the clinician's services. The largest specialties are Cardiovascular Disease (Cardiology) (3), Nurse Practitioner (3) and Vascular Surgery (1). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Santiago C. Ramirez MD PLLC accept?
Health plans from Ambetter Health and Ambetter from Arizona Complete Health list Santiago C. Ramirez MD PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Santiago C. Ramirez MD PLLC was last updated on May 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.
# Santiago C. Ramirez Md Pllc · NPI 1912457649
Cardiovascular Disease organization in Nogales, Arizona. Organization record, active in the CMS NPPES registry since October 5, 2016.
## Identity
- **NPI:** 1912457649 (Entity type: Organization)
- **Enumerated:** October 5, 2016
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **Organization subpart:** No
- **Authorized official:** Rosana Olivas, BILLING MANAGER
## Practice location
- **Address:** 1815 N MASTICK WAY, Nogales, AZ 85621-1046
- **Phone:** (520) 415-1027 · **Fax:** (520) 229-0086
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 7 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Cardiovascular Disease (Cardiology) (3), Nurse Practitioner (3), Vascular Surgery (1) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1912457649) · Data from the CMS NPPES public registry.