DR. JUAN ARTURO SIORDIA JR. M.D.
NPI 1841679370
Internal Medicine - Interventional Cardiology in Tucson, AZ
About Dr. Juan Arturo Siordia Jr. M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JUAN ARTURO SIORDIA JR. M.D. (NPI 1841679370) is an individual interventional cardiology provider in Tucson, Arizona, licensed in Arizona (56229) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS, is affiliated with Deborah Heart And Lung Center, and is a graduate of University Of Arizona College Of Medicine (2015).
NPPES Registry Identity
Specialties & Licenses 3
Accepted Insurance
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. Juan Arturo Siordia Jr. 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 Reassignments
2Medicare enrollment records show Juan Siordia reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tucson, AZ 85712
- Reassigned Medicare billing, Arizona enrollment
- 95 clinicians in this Medicare group
Nogales, AZ 85621
- Reassigned Medicare billing, Arizona enrollment
- 7 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Deborah Heart And Lung Center
Acute Care Hospitals · Browns Mills, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85712 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TUCSON, AZ 85712
TUCSON, AZ 85712
TUCSON, AZ 85712
TUCSON, AZ 85712
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 Juan Siordia's NPI number?
The NPI number for Juan Siordia is 1841679370. It was assigned to this individual provider in the NPPES registry on May 29, 2015.
Where is Juan Siordia located?
Juan Siordia practices at 3925 E Fort Lowell Rd Ste 105, Tucson, AZ 85712. The listed phone number is (520) 229-0085.
What is Juan Siordia's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.
Is Juan Siordia enrolled in Medicare?
Yes. Juan Siordia 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 organizations bill Medicare for Juan Siordia's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Juan Siordia reassigns Medicare benefits to 2 organizations: Tucson Medical Center (Tucson, AZ) and Santiago C. Ramirez MD PLLC (Nogales, AZ). Each 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 Juan Siordia's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Juan Siordia accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona and UnitedHealthcare list Juan Siordia 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.
Is Juan Siordia affiliated with any hospitals?
According to CMS data, Juan Siordia is affiliated with Deborah Heart And Lung Center.
When was this NPI record last updated?
The NPPES record for Juan Siordia was last updated on September 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Juan Arturo Siordia Jr., M.D. · NPI 1841679370
Interventional Cardiology physician in Tucson, Arizona. Individual provider, active in the CMS NPPES registry since May 29, 2015.
## Identity
- **NPI:** 1841679370 (Entity type: Individual)
- **Enumerated:** May 29, 2015
- **Primary specialty:** Internal Medicine - Interventional Cardiology · taxonomy 207RI0011X
- **State license:** 56229 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3925 E FORT LOWELL RD STE 105, Tucson, AZ 85712-1053
- **Phone:** (520) 229-0085
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Tucson Medical Center (NPI 1174512792, Tucson, AZ); Santiago C. Ramirez MD PLLC (NPI 1912457649, Nogales, AZ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Arizona College Of Medicine, class of 2015
## Record status
- **NPPES last updated:** September 3, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1841679370) · Data from the CMS NPPES public registry.