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

Dr. William Joseph Seemer, DO

Individual provider Hospitalist Physician · NPI 1346878956

Dr. William Joseph Seemer, DO is registered under Family Practice in Jacksonville, Florida. Qualified in 2020, 6 years ago. Practices with Hni Medical Services of Florida, LLC, a 103-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Florida and Georgia.

Years since qualifying
6
Licensed in
FL, GA
In the registry since
2020
Specialties on file
3
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

3625 University Blvd S
Jacksonville, FL 32216-4207
Phone: (904) 702-6111
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 (1)

  • 1 Magnolia Ct, Moultrie, GA 31768-6764 — (229) 502-9753

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence OS20360 (FL)
Hospitalist Physician Taxonomy 208M00000X · Licence OS20360 (FL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (GA)

Record details

NPI number1346878956
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 30, 2020
Last updated in NPPESApril 4, 2025
Certification dateApril 4, 2025

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Hni Medical Services Of Florida, Llc — 103 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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 patients211
Services billed 224 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 $65 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. Those with a page here are linked.

  • Hca Florida Memorial Hospital Hospital · Jacksonville, FL · listed as Memorial Hospital
  • Adventhealth Palm Coast Parkway Hospital · Palm Coast, FL
  • Ascension St Vincent'S Southside Hospital · Jacksonville, FL
  • Ascension St Vincent'S St Johns County Hospital · St. Johns, FL
  • AdventHealth Palm Coast Hospital · Palm Coast, FL

Colleagues at Hni Medical Services of Florida, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 103 clinicians in the practice; 12 are shown here.

Other providers in Jacksonville