Gary Lloyd Horn, M.D.
Diagnostic Radiology Physician · Houston, TX
Gary Lloyd Horn, M.D. is a diagnostic radiology physician with a practice address in Houston, Texas, and NPI 1720399629, issued on Jun 24, 2010. Check the license (Texas P3539, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gary Lloyd Horn
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- P3539 TX
262077 MA
Self-reported in NPPES; status is on the state search - Practice location
- 6560 Fannin St, Houston, TX 77030
- Phone
- (713) 441-4431
- Enumerated
- Jun 24, 2010
- Record last updated
- Aug 27, 2025
- Fax
- (713) 790-6615
- Medicare enrollment
- Enrolled (PECOS I20160614001441); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 3,124 in Texas → Look up another NPI →
Also registered at 6560 Fannin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rakshanda Aslam, MDInternal Medicine Physician1720260268
Verify Gary Lloyd Horn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P3539Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 83.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $90.34
1 payment: food and beverage; the largest payer was Histosonics,inc. The 8,048 providers of this specialty with any payment received $2,488.38 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.
Bills Medicare through one group practice
- Singleton Associates PALeague City, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Lloyd Horn among 3,124 diagnostic radiology physician records in Texas
Gary Lloyd Horn, M.D. 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 2010, is newer than 70% of them.
- NPI issued2010 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2010 · median 2003 among the 2,277 with a school on file
- Record last updated2025 · 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).
823 diagnostic radiology physician records list a practice address in Houston
They are 823 of the 61,221 NPPES records with a practice address in Houston, and 3,124 diagnostic radiology physician records in Texas.
All 3,124 in Texas → Every provider in Houston → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Carmen Bonmati, M.D.Houston, TX 770301629069513
- Hannah Chung, M.D.Houston, TX 770301780683508
- Monali Gupta, MDHouston, TX 770301033108089
- Monica Huang, M.D.Houston, TX 770301366433484
- Reena Jha, M.D.Houston, TX 770301548269988
- Anne Kushwaha, M.D.Houston, TX 770301134121742
- Thomas Lu, MDHouston, TX 770301669469730
- Sagar Naik, M.D.Houston, TX 770301972593127
Common questions
What is Gary Lloyd Horn, M.D.'s NPI number?
Gary Lloyd Horn, M.D.'s National Provider Identifier (NPI) is 1720399629, issued on Jun 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Gary Lloyd Horn, M.D. located?
The NPPES record lists a practice address at 6560 Fannin St, Houston, TX, 77030. Phone: (713) 441-4431. Providers update this record themselves, so call before visiting.
How can I verify Gary Lloyd Horn, M.D.'s license?
NPPES lists Texas license number P3539, 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.
What is Gary Lloyd Horn, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.