Larry Grissom, M.D.
Diagnostic Radiology Physician · Houston, TX
Larry Grissom, M.D. is a diagnostic radiology physician with a practice address in Houston, Texas, and NPI 1164400644, issued on Jan 5, 2006. Check the license (Texas F1605, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Larry Grissom
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- F1605 TX
Self-reported in NPPES; status is on the state search - Practice location
- 800 Peakwood Dr, Houston, TX 77090
- Phone
- (281) 440-5158
- Enumerated
- Jan 5, 2006
- Entity
- Type 1 · individual
Also registered at 800 Peakwood Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Larry Grissom in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license F1605Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
No measured Medicare quality score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
746 diagnostic radiology physician records list a Houston practice address
They are 746 of the 61,221 NPPES records with a Houston practice address, and 2,755 diagnostic radiology physician records in Texas.
All 746 in Houston → All 2,755 in Texas → Every provider in Houston →
Other diagnostic radiology physician records in Texas
- Solomon Abay, M.D.Austin, TX1295122885
- Ahmed Abdel Aal, MD, PHDHouston, TX1215076344
- Abeer Abdelhafez, MDHouston, TX1225791338
- Waleed Abdellatif, MBBCH, MSC, MSHPEHouston, TX1629737770
- Fouad Abdole, MDHouston, TX1073196317
- Davood Abdollahian, M.D.Houston, TX1902199474
- Osama Abdul-Rahim, M.D.McKinney, TX1568774065
- Creed Abell, M.D.Columbus, TX1619965100
- Joshua AbramowitzAustin, TX1689676975
- Michael Achilleos, MDFort Worth, TX1396189494
Common questions
What is Larry Grissom, M.D.'s NPI number?
Larry Grissom, M.D.'s National Provider Identifier (NPI) is 1164400644, issued on Jan 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Larry Grissom, M.D. located?
The NPPES record lists a practice address at 800 Peakwood Dr, Houston, TX, 77090. Phone: (281) 440-5158. Providers update this record themselves, so call before visiting.
How can I verify Larry Grissom, M.D.'s license?
NPPES lists Texas license number F1605, 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 Larry Grissom, M.D.'s Medicare quality score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.