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

Sergio Agni Ulloa, DO

Individual provider Orthopaedic Surgery Physician · NPI 1912187626

Sergio Agni Ulloa, DO practises Orthopedic Surgery in Athens, Ohio. Graduated from Ohio University, College of Osteopathic Medicine in 2007, 19 years ago. Practices with Ohiohealth Corporation, a 2,289-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
19
Trained at
Ohio University, College of Osteopathic Medicine
Licensed in
OH
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

75 Hospital Dr Ste 140
Athens, OH 45701-2858
Phone: (740) 566-4720
Fax: (740) 566-4721
Show map & directions

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

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 34.009633 (OH)

Record details

NPI number1912187626
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedNovember 9, 2007
Last updated in NPPESJanuary 25, 2022
Certification dateDecember 24, 2019

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolOHIO UNIVERSITY, COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2007 (19 years in practice)
Group practice Ohiohealth Corporation — 2289 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Knee replacement 53 times · 80th percentile
Upper limb (arm) arthroscopy (minimally invasive joint repair) 38 times · 80th percentile
Hip replacement 20 times · 66th percentile
Lower limb (leg) arthroscopy (minimally invasive joint 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.

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 patients654
Services billed 7,840 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Education $102 1 payment · educational material or training, not a fee
Food and Beverage $38 2 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. Those with a page here are linked.

  • Ohiohealth O'Bleness Hospital Hospital · Athens, OH · listed as Ohio Health O'Bleness Hospital
  • Ohiohealth Home Health With Compassus Home health agency · Athens, OH

Colleagues at Ohiohealth Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2289 clinicians in the practice; 12 are shown here.

Other providers in Athens