Dorothy F. Merritt, M.D.
Internal Medicine Physician · La Marque, TX
Dorothy F. Merritt, M.D. is an internal medicine physician with a practice address in La Marque, Texas, and NPI 1881698579, issued on Jun 9, 2005. Check the license (Texas G9878, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Dorothy F. Merritt
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G9878 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6608 Gulf Fwy Ste 100, La Marque, TX 77568
- Phone
- (409) 655-2770
- Enumerated
- Jun 9, 2005
- Record last updated
- Jun 5, 2024
- Fax
- (844) 234-6011
- Medicaid ID
- 127993703 TX
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Verify Dorothy F. Merritt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license G9878Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,486 Medicare Part D claims for 154 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 211 claims were for opioids.
Most prescribed
- Levothyroxine Sodium102 claims
- Hydrocodone-Acetaminophen101 claims
- Atorvastatin Calcium68 claims
- Alprazolam64 claims
- Gabapentin58 claims
- Diazepam53 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: $104.61
5 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. 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.
Dorothy F. Merritt among 9,175 internal medicine physician records in Texas
Dorothy F. Merritt, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2024 · 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).
2 internal medicine physician records list a practice address in La Marque
They are 2 of the 78 NPPES records with a practice address in La Marque, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in La Marque → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Drury Woodson, M.D.La Marque, TX 775681467476242
- Alkesh Amin, MDLake Jackson, TX 775661215977145
- Mustanser Badar, MD, MPH, RPVILake Jackson, TX 775661932462140
- Rajesh Dalal, MDLake Jackson, TX 775661316928021
- Jeevan Gowda, MDLake Jackson, TX 775661881862027
- Frank Okosun, M.DLake Jackson, TX 775661093027807
- Sailaja Saragadam, MDLake Jackson, TX 775661912517905
- Sapan Bhatt, M.D.La Porte, TX 775711578620159
Common questions
What is Dorothy F. Merritt, M.D.'s NPI number?
Dorothy F. Merritt, M.D.'s National Provider Identifier (NPI) is 1881698579, issued on Jun 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Dorothy F. Merritt, M.D. located?
The NPPES record lists a practice address at 6608 Gulf Fwy Ste 100, La Marque, TX, 77568. Phone: (409) 655-2770. Providers update this record themselves, so call before visiting.
How can I verify Dorothy F. Merritt, M.D.'s license?
NPPES lists Texas license number G9878, 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 Dorothy F. Merritt, M.D. prescribe under Medicare Part D?
In 2024, Dorothy F. Merritt, M.D. had 2,486 Medicare Part D claims for 154 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.