NPPES file of Aug 9, 2026

Omar A. Zantua, M.D.

Geriatric Medicine (Internal Medicine) Physician · Houston, TX

Omar A. Zantua, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Houston, Texas, and NPI 1083675359, issued on Mar 28, 2006. Check the license (Texas M0614, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083675359
Name
Omar A. Zantua
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
M0614 TX
Self-reported in NPPES; status is on the state search
Practice location
8511 S Sam Houston Pkwy E, Houston, TX 77075
Phone
(713) 343-2301
Enumerated
Mar 28, 2006
Record last updated
Apr 4, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicaid ID
173870002 TX
Medicare enrollment
Enrolled (PECOS I20050120000567); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest geriatric medicine (internal medicine) physician records → All 256 in Texas → Look up another NPI →

Also registered at 8511 S Sam Houston Pkwy E

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Teresa Albright, M.D.Geriatric Medicine (Family Medicine) Physician1427018969
  2. Patrice Barnum, MDGeriatric Medicine (Internal Medicine) Physician1215096029
  3. Maria Chong-Ramasute, MDInternal Medicine Physician1972676005
  4. Jeffrey Eitel, RN,GNP-CGerontology Nurse Practitioner1558313163
  5. Peggy Gonzalez, APRN-BCFamily Nurse Practitioner1700830502
  6. Donna HambyAcute Care Nurse Practitioner1396775052

Verify Omar A. Zantua in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license M0614    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

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2.7 times the Medicare Part D claims of the average geriatric medicine (internal medicine) physician in 2024

11,361 Medicare Part D claims for 277 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. 360 claims were for opioids.

  1. Omar Zantua11,361
  2. Specialty average4,246

Most prescribed

  1. Atorvastatin Calcium535 claims
  2. Eliquis366 claims
  3. Sertraline Hcl350 claims
  4. Gabapentin349 claims
  5. Levothyroxine Sodium336 claims
  6. Amlodipine Besylate305 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.

Bills Medicare through one group practice

  1. CS Pacs 3 Southwest, LLCDayton, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Omar A. Zantua among 256 geriatric medicine (internal medicine) physician records in Texas

Omar A. Zantua, M.D. is one of 256 geriatric medicine (internal medicine) physician records with a practice address in Texas. 71% 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 9% of them.

  • NPI issued2006 · 9% of these records are older, 44% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated1991 · median 2000 among the 143 with a school on file
  • Record last updated2014 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in Texas

There are 256 geriatric medicine (internal medicine) physician records in Texas.

All 256 in Texas → Every provider in Houston → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Patrice Barnum, MDHouston, TX 770751215096029
  2. Deborah McKay, MDHouston, TX 770751477584480
  3. Folasade Ojo, MDHouston, TX 770751851477764
  4. Afroze Ali, MDHouston, TX 770741598845869
  5. Annabelle Davis, MDHouston, TX 770741255862934
  6. James Heisler, MDHouston, TX 770741538197157
  7. Sistla Krishna, M.D.Houston, TX 770741811939382
  8. Brian Tremaine, M.D.Houston, TX 770771205897147

Common questions

What is Omar A. Zantua, M.D.'s NPI number?

Omar A. Zantua, M.D.'s National Provider Identifier (NPI) is 1083675359, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Omar A. Zantua, M.D. located?

The NPPES record lists a practice address at 8511 S Sam Houston Pkwy E, Houston, TX, 77075. Phone: (713) 343-2301. Providers update this record themselves, so call before visiting.

How can I verify Omar A. Zantua, M.D.'s license?

NPPES lists Texas license number M0614, 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 Omar A. Zantua, M.D. prescribe under Medicare Part D?

In 2024, Omar A. Zantua, M.D. had 11,361 Medicare Part D claims for 277 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.