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

Dr. John Anderson Gilliam II, MD

Individual provider Family Medicine Physician · NPI 1598781429

Dr. John Anderson Gilliam II, MD is registered under Family Practice in Silverton, Oregon. Graduated from University of Texas Southwestern Medical School at Dallas in 1995, 31 years ago. Practices with Silverton Health, a 146-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
31
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
OR
In the registry since
2006
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

607 Welch St
Silverton, OR 97381 Not confirmed with CMS for 19 years — call before visiting
Phone: (508) 873-3636
Fax: (503) 873-1457
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MD21293 (OR)

Record details

NPI number1598781429
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 14, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 1995 (31 years in practice)
Group practice Silverton Health — 146 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 patients51
Services billed 130 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Legacy Silverton Medical Center Hospital · Silverton, OR

Colleagues at Silverton Health

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 146 clinicians in the practice; 12 are shown here.

Other providers in Silverton