Andrew David Merkin, MD
Internal Medicine Physician · Mesquite, TX
Andrew David Merkin, MD is an internal medicine physician with a practice address in Mesquite, Texas, and NPI 1831144534, issued on May 23, 2006. Check the license (Texas F4278, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Andrew David Merkin
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- F4278 TX
Self-reported in NPPES; status is on the state search - Practice location
- 2692 N Galloway, Mesquite, TX 75150
- Phone
- (972) 686-9339
- Enumerated
- May 23, 2006
- Record last updated
- Sep 15, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (972) 686-9799
- Medicaid ID
- 139078303 TX
- Medicare enrollment
- Enrolled (PECOS I20110225000592); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 1979
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 2692 N Galloway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Ellman, MDSpecialist1245339977
Verify Andrew David Merkin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license F4278Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,791 Medicare Part D claims for 114 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 586 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen416 claims
- Alprazolam224 claims
- Oxycodone-Acetaminophen79 claims
- Amlodipine Besylate74 claims
- Amoxicillin-Clavulanate Potass64 claims
- Albuterol Sulfate Hfa62 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.
Andrew David Merkin among 9,175 internal medicine physician records in Texas
Andrew David Merkin, 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
- Graduated1979 · median 2004 among the 6,088 with a school on file
- Record last updated2008 · 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).
34 internal medicine physician records list a practice address in Mesquite
They are 34 of the 1,313 NPPES records with a practice address in Mesquite, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Mesquite → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lewis EdwardsMesquite, TX 751501871524488
- Jason George, MDMesquite, TX 751501720237365
- Satish Goyal, M.D.Mesquite, TX 751501528056538
- Naqi Idris, M.D.Mesquite, TX 751501659562627
- Piotr Jakubowski, M.D.Mesquite, TX 751501609948652
- Khurshid Khan, M.D.Mesquite, TX 751501467475244
- Julio Olivieri, M.D.Mesquite, TX 751501881605780
- Palak Parikh, M.D.Mesquite, TX 751501386869816
Common questions
What is Andrew David Merkin, MD's NPI number?
Andrew David Merkin, MD's National Provider Identifier (NPI) is 1831144534, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Andrew David Merkin, MD located?
The NPPES record lists a practice address at 2692 N Galloway, Mesquite, TX, 75150. Phone: (972) 686-9339. Providers update this record themselves, so call before visiting.
How can I verify Andrew David Merkin, MD's license?
NPPES lists Texas license number F4278, 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 Andrew David Merkin, MD prescribe under Medicare Part D?
In 2024, Andrew David Merkin, MD had 2,791 Medicare Part D claims for 114 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.