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

Dr. Samuel Patrick Walker Jr., DO

Individual provider Internal Medicine Physician · NPI 1255685152

Dr. Samuel Patrick Walker Jr., DO practises Internal Medicine in East Liverpool, Ohio. Qualified in 2012, 14 years ago. Practices with River Valley Physicians LLC, a 55-clinician group and accepts Medicare assignment. Licensed in Alabama.

Years since qualifying
14
Licensed in
AL
In the registry since
2012
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

425 W 5th St
East Liverpool, OH 43920-2498
Phone: (330) 385-7200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence DO.1545 (AL)

Record details

NPI number1255685152
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedOctober 31, 2012
Last updated in NPPESOctober 5, 2026
Certification dateOctober 5, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice River Valley Physicians Llc — 55 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 patients184
Services billed 310 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at River Valley Physicians LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 55 clinicians in the practice; 12 are shown here.

Other providers in East Liverpool