Ronald William Merrill, M.D.
Family Medicine Physician · Corsicana, TX
Ronald William Merrill, M.D. is a family medicine physician with a practice address in Corsicana, Texas, and NPI 1588657431, issued on Aug 25, 2005. Check the license (Texas E4524, as entered in NPPES) on the Texas Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ronald William Merrill
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- E4524 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3124 W Highway 22, Corsicana, TX 75110
- Phone
- (903) 641-4270
- Enumerated
- Aug 25, 2005
- Record last updated
- May 8, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (903) 872-5321
- Medicaid IDs
- 111432401 TX
111432404 TX - Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 3124 W Highway 22
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ronald William Merrill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license E4524Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ronald William Merrill among 11,119 family medicine physician records in Texas
Ronald William Merrill, M.D. is one of 11,119 family medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileNo · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2012 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 family medicine physician records list a practice address in Corsicana
They are 11 of the 373 NPPES records with a practice address in Corsicana, and 11,119 family medicine physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 11,119 in Texas → Every provider in Corsicana → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jana Brock, MDCorsicana, TX 751101124121108
- Dale Campbell, M.D.Corsicana, TX 751101851384648
- William Kinzie, MDCorsicana, TX 751101871567859
- Noha Mataoui, MDCorsicana, TX 751101366670440
- William McHenry, M.D.Corsicana, TX 751101295728152
- Daniel Metzger, D.O.Corsicana, TX 751101952348823
- Joseph Saucedo, DOCorsicana, TX 751101164485140
- Grady Shaw, MDCorsicana, TX 751101598730939
Common questions
What is Ronald William Merrill, M.D.'s NPI number?
Ronald William Merrill, M.D.'s National Provider Identifier (NPI) is 1588657431, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ronald William Merrill, M.D. located?
The NPPES record lists a practice address at 3124 W Highway 22, Corsicana, TX, 75110. Phone: (903) 641-4270. Providers update this record themselves, so call before visiting.
How can I verify Ronald William Merrill, M.D.'s license?
NPPES lists Texas license number E4524, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. 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. 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.