Derek Christopher Harshaw, D.O
Internal Medicine Physician · East Liverpool, OH
Derek Christopher Harshaw, D.O is an internal medicine physician with a practice address in East Liverpool, Ohio, and NPI 1588010649, issued on May 9, 2016. Check the license (Ohio 34.013770, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Derek Christopher Harshaw
- Credential
- D.O
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 34.013770 OH
3350 WV
Self-reported in NPPES; status is on the state search - Practice location
- 425 W 5TH St, East Liverpool, OH 43920
- Phone
- (330) 385-7200
- Enumerated
- May 9, 2016
- Record last updated
- Oct 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190624003506); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2016
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Also registered at 425 W 5TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Grace Evangeline Baratam, MDStudent in an Organized Health Care Education/Training Program1982457453
Verify Derek Christopher Harshaw in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34.013770Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% more Medicare Part D claims than the average internal medicine physician in 2024
3,636 Medicare Part D claims for 260 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 94 claims were for opioids.
Most prescribed
- Furosemide194 claims
- Levothyroxine Sodium140 claims
- Pantoprazole Sodium136 claims
- Eliquis119 claims
- Potassium Chloride105 claims
- Atorvastatin Calcium100 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
- 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).
Derek Christopher Harshaw among 5,277 internal medicine physician records in Ohio
Derek Christopher Harshaw, 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 2016, is newer than 73% of them.
- NPI issued2016 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2016 · 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.
All 5,277 in Ohio → Every provider in East Liverpool → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kamlesh Aggarwal, MDE Liverpool, OH 439201861413627
- Clement Cahall, M.D.East Liverpool, OH 439201831172048
- Najeed Fazal, M.D.East Liverpool, OH 439201427069814
- Karl Hedderich, D.O.East Liverpool, OH 439201477964781
- Jean Holdren, DO PCEast Liverpool, OH 439201588675631
- Mumtaz Husain, MDEast Liverpool, OH 439201295751113
- Luke Joseph, D.O.East Liverpool, OH 439201760823587
- Gretchen Nickell, DOEast Liverpool, OH 439201639130552
Common questions
What is Derek Christopher Harshaw, D.O's NPI number?
Derek Christopher Harshaw, D.O's National Provider Identifier (NPI) is 1588010649, issued on May 9, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Derek Christopher Harshaw, D.O located?
The NPPES record lists a practice address at 425 W 5TH St, East Liverpool, OH, 43920. Phone: (330) 385-7200. Providers update this record themselves, so call before visiting.
How can I verify Derek Christopher Harshaw, D.O's license?
NPPES lists Ohio license number 34.013770, as entered by the provider. 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 Derek Christopher Harshaw, D.O prescribe under Medicare Part D?
In 2024, Derek Christopher Harshaw, D.O had 3,636 Medicare Part D claims for 260 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.