Mark D. Hiatt, MD
Diagnostic Radiology Physician · Tyler, TX
Mark D. Hiatt, MD is a diagnostic radiology physician with a practice address in Tyler, Texas, and NPI 1396719597, issued on Feb 14, 2006. Check the license (Texas L8075, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark D. Hiatt
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- L8075 TX
Self-reported in NPPES; status is on the state search - Practice location
- 520 Douglas Blvd, Tyler, TX 75702
- Phone
- (903) 510-1175
- Enumerated
- Feb 14, 2006
- Record last updated
- Mar 29, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (903) 510-8806
- Medicaid IDs
- 175371702 TX
175371701 TX - Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 3,124 in Texas → Look up another NPI →
Also registered at 520 Douglas Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark D. Hiatt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L8075Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024
12 Medicare Part D claims, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% 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.
Mark D. Hiatt among 3,124 diagnostic radiology physician records in Texas
Mark D. Hiatt, MD is one of 3,124 diagnostic radiology physician records with a practice address in Texas. 77% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 49% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2010 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Texas
There are 3,124 diagnostic radiology physician records in Texas.
All 3,124 in Texas → Every provider in Tyler → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Melinda Coker, M.D.Tyler, TX 757021093039539
- Richard Handley, MDTyler, TX 757021447224647
- Jere Lancaster, DOTyler, TX 757021851365886
- John Larrinaga, MDTyler, TX 757021275507204
- Albert Lee, MDTyler, TX 757021316966971
- Tyler Leete, MDTyler, TX 757021760692115
- David Parish, M.D.Tyler, TX 757021508063157
- Joshua Rettig, MDTyler, TX 757021396710059
Common questions
What is Mark D. Hiatt, MD's NPI number?
Mark D. Hiatt, MD's National Provider Identifier (NPI) is 1396719597, issued on Feb 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark D. Hiatt, MD located?
The NPPES record lists a practice address at 520 Douglas Blvd, Tyler, TX, 75702. Phone: (903) 510-1175. Providers update this record themselves, so call before visiting.
How can I verify Mark D. Hiatt, MD's license?
NPPES lists Texas license number L8075, 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 Mark D. Hiatt, MD prescribe under Medicare Part D?
In 2024, Mark D. Hiatt, MD had 12 Medicare Part D claims; the average among diagnostic radiology physician prescribers was 51. 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.