Richard Johnston, M.D.
Internal Medicine Physician · Irving, TX
Richard Johnston, M.D. is an internal medicine physician with a practice address in Irving, Texas, and NPI 1205878477, issued on Jun 12, 2006. Check the license (Texas E4438, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Richard Johnston
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- E4438 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6750 N Macarthur Blvd Ste 350, Irving, TX 75039
- Phone
- (972) 556-1616
- Enumerated
- Jun 12, 2006
- Entity
- Type 1 · individual
Also registered at 6750 N Macarthur Blvd Ste 350
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Conoley, M.D.Pediatrics Physician1689611485
- Megan FreemanFamily Nurse Practitioner1265045678
- Charles Grubb, P.A.Physician Assistant1366484354
- Iffat Jahan, MDFamily Medicine Physician1861705113
- Elisha Jno-Baptiste, MDGeneral Practice Physician1871915454
- Ryan Jones, M.D.Internal Medicine Physician1790983682
Verify Richard Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license E4438Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
59 Medicare Part D claims for 13 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of 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.
106 internal medicine physician records list a Irving practice address
They are 106 of the 3,532 NPPES records with a Irving practice address, and 11,069 internal medicine physician records in Texas.
All 106 in Irving → All 11,069 in Texas → Every provider in Irving →
Other internal medicine physician records in Texas
- Muhammad A. Sattar, MDDallas, TX1760465553
- Gayatri Aaluri, MDGalveston, TX1821928508
- Anunaya AashishDenton, TX1134246374
- Queenie Ann Abad, M.D.San Antonio, TX1174979785
- Fuad Abaleka, M.DLubbock, TX1861925596
- Carol Abalihi, M.D.El Paso, TX1326136243
- Pedro Abanto, M.D.McAllen, TX1982840393
- Oliverio Abarca Guzman, MDHarlingen, TX1346972940
- Obinna Abaribe, M.DMansfield, TX1457704355
- Enyinnaya Abarikwu, MDTyler, TX1174788178
Common questions
What is Richard Johnston, M.D.'s NPI number?
Richard Johnston, M.D.'s National Provider Identifier (NPI) is 1205878477, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard Johnston, M.D. located?
The NPPES record lists a practice address at 6750 N Macarthur Blvd Ste 350, Irving, TX, 75039. Phone: (972) 556-1616. Providers update this record themselves, so call before visiting.
How can I verify Richard Johnston, M.D.'s license?
NPPES lists Texas license number E4438, 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.
How much does Richard Johnston, M.D. prescribe under Medicare Part D?
In 2024, Richard Johnston, M.D. had 59 Medicare Part D claims for 13 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.