Gregory Stephen Merrick, MD
Radiation Oncology Physician · Wheeling, WV
Gregory Stephen Merrick, MD is a radiation oncology physician with a practice address in Wheeling, West Virginia, and NPI 1992774673, issued on Mar 16, 2006. Check the license (West Virginia 15750, as entered in NPPES) on the West Virginia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregory Stephen Merrick
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 15750 WV
Self-reported in NPPES; status is on the state search - Practice location
- 1 Medical Park, Wheeling, WV 26003
- Phone
- (304) 243-3490
- Enumerated
- Mar 16, 2006
- Record last updated
- Aug 14, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (304) 243-5047
- Medicaid ID
- 0118001000 WV
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 37 in West Virginia → Look up another NPI →
Also registered at 1 Medical Park
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Peter Aragones, M.D.Diagnostic Radiology Physician1912974445
- Juan Carlos Arrieta, MDInterventional Cardiology Physician1306377437
- Milind Sumant Awale, MDFamily Medicine Physician1528355070
Verify Gregory Stephen Merrick in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWest Virginia Board of Medicine
Search for license 15750Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $4,631.25
6 payments; by number, the most common kind was consulting fee; the largest payer was Theragenics Corporation. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gregory Stephen Merrick among 37 radiation oncology physician records in West Virginia
Gregory Stephen Merrick, MD is one of 37 radiation oncology physician records with a practice address in West Virginia. 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 46% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2012 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a West Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in West Virginia
There are 37 radiation oncology physician records in West Virginia.
All 37 in West Virginia → Every provider in Wheeling → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Phuong Nguyen, M.D.Wheeling, WV 260031770803314
- Jondavid Pollock, MDWheeling, WV 260031831167048
- Greeshma Rajeev-Kumar, MDWheeling, WV 260031720615545
- Chandra Sekar, MDParkersburg, WV 261011497753768
- Mini Elnaggar, M.D.Beckley, WV 258011609057967
- David Shimm, MDBeckley, WV 258011770570731
- Muhammad Fareed, M.DElkins, WV 262411962886093
- Michael Galloway, MDElkins, WV 262411780654913
Common questions
What is Gregory Stephen Merrick, MD's NPI number?
Gregory Stephen Merrick, MD's National Provider Identifier (NPI) is 1992774673, issued on Mar 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Stephen Merrick, MD located?
The NPPES record lists a practice address at 1 Medical Park, Wheeling, WV, 26003. Phone: (304) 243-3490. Providers update this record themselves, so call before visiting.
How can I verify Gregory Stephen Merrick, MD's license?
NPPES lists West Virginia license number 15750, as entered by the provider. Search the West Virginia Board of Medicine at https://wvbom.wv.gov/public/search/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.