Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Robert Joseph Luna De Guzman, MD, MBA

Individual provider Internal Medicine Physician · NPI 1629606082

Robert Joseph Luna De Guzman, MD, MBA practises Internal Medicine in Youngstown, Ohio. Qualified in 2013, 13 years ago. Practices with Mercy Health Physicians Youngstown Specialty Care LLC, a 467-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
13
Licensed in
OH
In the registry since
2020
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MBA — Master of Business Administration
A graduate business degree.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1044 Belmont Ave
Youngstown, OH 44504-1006
Phone: (330) 480-7320
Fax: (330) 729-1591
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (2)

  • 8401 Market St, Boardman, OH 44512-6725 — (330) 729-4298
  • 667 Eastland Ave Se, Warren, OH 44484-4503 — (330) 841-2378

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 35.149203 (OH)
Internal Medicine Physician Taxonomy 207R00000X · Licence 57.249397 (OH)

Record details

NPI number1629606082
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MBA
Sole proprietorNo
NPI enumeratedMarch 31, 2020
Last updated in NPPESNovember 17, 2023
Certification dateNovember 17, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Mercy Health Physicians Youngstown Specialty Care Llc — 467 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients152
Services billed 415 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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 $96 1 payment · 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.

  • Hmhp St Elizabeth Boardman Health Center Hospital · Boardman, OH
  • Mh St Elizabeth Youngstown Hospital Hospital · Youngstown, OH

Colleagues at Mercy Health Physicians Youngstown Specialty Care LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 467 clinicians in the practice; 12 are shown here.

Other providers in Youngstown