Ali Haider Zakir, MD
Internal Medicine Physician · Katy, TX
Ali Haider Zakir, MD is an internal medicine physician with a practice address in Katy, Texas, and NPI 1124128673, issued on Sep 25, 2006. Check the license (Texas M3434, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ali Haider Zakir
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- M3434 TX
Self-reported in NPPES; status is on the state search - Practice location
- 19121 W Little York RD, Katy, TX 77449
- Phone
- (713) 955-5200
- Enumerated
- Sep 25, 2006
- Record last updated
- Jun 1, 2022
- Fax
- (281) 858-1251
- Medicaid ID
- 194406802 TX
- Medicare enrollment
- Enrolled (PECOS I20070929000049); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 19121 W Little York RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ngoc-Loan Nguyen, DPMPodiatrist1639161870
- Insiya Valika, PA-CMedical Physician Assistant1225493281
Verify Ali Haider Zakir in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M3434Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average internal medicine physician in 2024
4,345 Medicare Part D claims for 369 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 244 claims were for opioids.
Most prescribed
- Atorvastatin Calcium233 claims
- Amlodipine Besylate177 claims
- Lisinopril175 claims
- Levothyroxine Sodium164 claims
- Losartan Potassium143 claims
- Metformin Hcl125 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.
Industry payments in 2024: $20.86
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Zealth Care PLLCKaty, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ali Haider Zakir among 9,175 internal medicine physician records in Texas
Ali Haider Zakir, 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
- Graduated2003 · 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).
54 internal medicine physician records list a practice address in Katy
They are 54 of the 5,078 NPPES records with a practice address in Katy, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Katy → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ayesha Mian, MDKaty, TX 774491710447479
- Isabel Padilla, MDKaty, TX 774491447644950
- Alvin Raymond Tan, M.D.Katy, TX 774491093178725
- Barry Troyan, MDKaty, TX 774491295733483
- John Adams, M.DKaty, TX 774501922006410
- Harold Gottlieb, M.D.Katy, TX 774501336133081
- Anuradha Kantamani, M.D.Katy, TX 774501649244054
- Willy Pezzia, M.D.Katy, TX 774501982604575
Common questions
What is Ali Haider Zakir, MD's NPI number?
Ali Haider Zakir, MD's National Provider Identifier (NPI) is 1124128673, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ali Haider Zakir, MD located?
The NPPES record lists a practice address at 19121 W Little York RD, Katy, TX, 77449. Phone: (713) 955-5200. Providers update this record themselves, so call before visiting.
How can I verify Ali Haider Zakir, MD's license?
NPPES lists Texas license number M3434, 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 Ali Haider Zakir, MD prescribe under Medicare Part D?
In 2024, Ali Haider Zakir, MD had 4,345 Medicare Part D claims for 369 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.