NPPES file of Aug 9, 2026

Samuel Patrick Walker, D.O.

Internal Medicine Physician · East Liverpool, OH

Samuel Patrick Walker, D.O. is an internal medicine physician with a practice address in East Liverpool, Ohio, and NPI 1255685152, issued on Oct 31, 2012. Check the license on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255685152
Name
Samuel Patrick Walker
Credential
D.O.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
DO.1545 AL
Self-reported in NPPES; status is on the state search
Practice location
1305 Dairy LN, East Liverpool, OH 43920
Phone
(205) 454-7704
Enumerated
Oct 31, 2012
Record last updated
Apr 20, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20200910001813); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Samuel Patrick Walker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersState Medical Board of OhioCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Ohio license search

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93% fewer Medicare Part D claims than the average internal medicine physician in 2024

227 Medicare Part D claims for 133 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Samuel Walker227
  2. Specialty average3,176

Most prescribed

  1. Prednisone34 claims
  2. Naproxen26 claims
  3. Methocarbamol19 claims
  4. Ondansetron Odt18 claims
  5. Azithromycin14 claims
  6. Ciprofloxacin Hcl13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. River Valley Physicians LLCEast Liverpool, OH

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Samuel Patrick Walker among 5,277 internal medicine physician records in Ohio

Samuel Patrick Walker, D.O. is one of 5,277 internal medicine physician records with a practice address in Ohio. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 63% of them.

  • NPI issued2012 · 63% of these records are older, 35% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2012 · median 2006 among the 3,414 with a school on file
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

24 internal medicine physician records list a practice address in East Liverpool

They are 24 of the 513 NPPES records with a practice address in East Liverpool, and 5,277 internal medicine physician records in Ohio.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Kamlesh Aggarwal, MDE Liverpool, OH 439201861413627
  2. Clement Cahall, M.D.East Liverpool, OH 439201831172048
  3. Najeed Fazal, M.D.East Liverpool, OH 439201427069814
  4. Derek Harshaw, D.OEast Liverpool, OH 439201588010649
  5. Karl Hedderich, D.O.East Liverpool, OH 439201477964781
  6. Jean Holdren, DO PCEast Liverpool, OH 439201588675631
  7. Mumtaz Husain, MDEast Liverpool, OH 439201295751113
  8. Luke Joseph, D.O.East Liverpool, OH 439201760823587

Common questions

What is Samuel Patrick Walker, D.O.'s NPI number?

Samuel Patrick Walker, D.O.'s National Provider Identifier (NPI) is 1255685152, issued on Oct 31, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Samuel Patrick Walker, D.O. located?

The NPPES record lists a practice address at 1305 Dairy LN, East Liverpool, OH, 43920. Phone: (205) 454-7704. Providers update this record themselves, so call before visiting.

How can I verify Samuel Patrick Walker, D.O.'s license?

Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Samuel Patrick Walker, D.O. prescribe under Medicare Part D?

In 2024, Samuel Patrick Walker, D.O. had 227 Medicare Part D claims for 133 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.