Frank Mahzari, MD
Internal Medicine Physician · Houston, TX
Frank Mahzari, MD is an internal medicine physician with a practice address in Houston, Texas, and NPI 1841386125, issued on Oct 5, 2006. Check the license (Texas L8817, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Frank Mahzari
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- L8817 TX
Self-reported in NPPES; status is on the state search - Practice location
- 550 Post Oak Blvd Ste 411, Houston, TX 77027
- Phone
- (832) 669-0111
- Enumerated
- Oct 5, 2006
- Record last updated
- Dec 27, 2022
- Medicaid IDs
- 171990802 TX
171990801 TX - Medicare enrollment
- Enrolled (PECOS I20050407000811); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2002
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Verify Frank Mahzari in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L8817Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average internal medicine physician in 2024
717 Medicare Part D claims for 147 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Tamsulosin Hcl44 claims
- Carvedilol33 claims
- Furosemide33 claims
- Amlodipine Besylate31 claims
- Atorvastatin Calcium31 claims
- Levothyroxine Sodium28 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.
Frank Mahzari among 9,175 internal medicine physician records in Texas
Frank Mahzari, MD is one of 9,175 internal medicine physician records with a practice address in Texas. 82% 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, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2002 · median 2004 among the 6,088 with a school on file
- Record last updated2022 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,488 internal medicine physician records list a practice address in Houston
They are 1,488 of the 61,221 NPPES records with a practice address in Houston, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Houston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Srijhansi Adusumilli, M.D.Houston, TX 770271144260944
- Shezi Ali-Kirmani, MDHouston, TX 770271235123811
- Rene Del Valle, MDHouston, TX 770271669419966
- Michael Eisenberg, M.D.Houston, TX 770271609817162
- Nam Hoang, M.D.Houston, TX 770271578563524
- Terence Holmes, M.D.Houston, TX 770271134106651
- Scott Lisse, MDHouston, TX 770271346245818
- Shi-Tze Lu, M.D.Houston, TX 770271215932900
Common questions
What is Frank Mahzari, MD's NPI number?
Frank Mahzari, MD's National Provider Identifier (NPI) is 1841386125, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frank Mahzari, MD located?
The NPPES record lists a practice address at 550 Post Oak Blvd Ste 411, Houston, TX, 77027. Phone: (832) 669-0111. Providers update this record themselves, so call before visiting.
How can I verify Frank Mahzari, MD's license?
NPPES lists Texas license number L8817, 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 Frank Mahzari, MD prescribe under Medicare Part D?
In 2024, Frank Mahzari, MD had 717 Medicare Part D claims for 147 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.