Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Juan Arturo Siordia Jr., MD

Individual provider Interventional Cardiology Physician · NPI 1841679370

Dr. Juan Arturo Siordia Jr., MD is registered under Cardiovascular Disease (Cardiology) in Tucson, Arizona. Graduated from University of Arizona College of Medicine in 2015, 11 years ago. Practices with Santiago C Ramirez MD PLLC, a 3-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
11
Trained at
University of Arizona College of Medicine
Licensed in
AZ
In the registry since
2015
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3925 E Fort Lowell Rd Ste 105
Tucson, AZ 85712-1053
Phone: (520) 229-0085
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Interventional Cardiology Physician (primary) Taxonomy 207RI0011X · Licence 56229 (AZ)
Internal Medicine Physician Taxonomy 207R00000X · Licence 56229 (AZ)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 56229 (AZ)

Record details

NPI number1841679370
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 29, 2015
Last updated in NPPESSeptember 3, 2025
Certification dateSeptember 3, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Santiago C Ramirez Md Pllc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Coronary angioplasty and stenting 1–10 times
Pacemaker insertion or repair 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,262 26 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Santiago C Ramirez MD PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Tucson