Robert D. Marks, M.D.
Gastroenterology Physician · Alabaster, AL
Robert D. Marks, M.D. is a gastroenterology physician with a practice address in Alabaster, Alabama, and NPI 1972541910, issued on Jun 3, 2006. Check the license (Alabama 13483, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Robert D. Marks
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 13483 AL
Self-reported in NPPES; status is on the state search - Practice location
- 1010 1St St N, Alabaster, AL 35007
- Phone
- (205) 663-1023
- Enumerated
- Jun 3, 2006
- Record last updated
- Dec 4, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (205) 802-7778
- Medicare enrollment
- Enrolled (PECOS I20080311000246); accepts Medicare assignment
- Medical or professional school
- Meharry Medical College School Of Medicine, 1986
- Entity
- Type 1 · individual
Also registered at 1010 1St St N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Day, M.D.Gastroenterology Physician1649213182
- Andrea Grill, PA-CPhysician Assistant1962546218
- Stacey GrimesAudiologist1770732521
- James Head, MDObstetrics & Gynecology Physician1740324086
- William Livingston, M.D.Otolaryngology Physician1043233091
- Robert Loudon, M.D.Gastroenterology Physician1487608881
Verify Robert D. Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license 13483Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.7 times the Medicare Part D claims of the average gastroenterology physician in 2024
3,787 Medicare Part D claims for 952 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium1,312 claims
- Dexlansoprazole Dr470 claims
- Linzess276 claims
- Dicyclomine Hcl243 claims
- Famotidine214 claims
- Sod Sulf-Potass Sulf-Mag Sulf171 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: $1,761.42
100 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Gastroenterology Associates OF North-Central Alabama IncAlabaster, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
6 gastroenterology physician records list a practice address in Alabaster
They are 6 of the 433 NPPES records with a practice address in Alabaster, and 232 gastroenterology physician records in Alabama.
All 6 in Alabaster → All 232 in Alabama → Every provider in Alabaster →
Other gastroenterology physician records in Alabama
- Sam Abdehou, MDMobile, AL1134651656
- Thaer Abdelfattah, M.D.Birmingham, AL1346796091
- Mason Adams, M.D.Mobile, AL1770979882
- Rishi Agarwal, M.D.Birmingham, AL1164625257
- Ali Ahmed, MDBirmingham, AL1649431511
- Patricia Ajayi-Fox, M.D.Birmingham, AL1790166221
- Robert Albares, MDDothan, AL1225081177
- Francisco Alcocer, MDBirmingham, AL1356625396
- Attupuram Alexander, MDDecatur, AL1790761443
- Anas AljabiMobile, AL1558083881
Common questions
What is Robert D. Marks, M.D.'s NPI number?
Robert D. Marks, M.D.'s National Provider Identifier (NPI) is 1972541910, issued on Jun 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert D. Marks, M.D. located?
The NPPES record lists a practice address at 1010 1St St N, Alabaster, AL, 35007. Phone: (205) 663-1023. Providers update this record themselves, so call before visiting.
How can I verify Robert D. Marks, M.D.'s license?
NPPES lists Alabama license number 13483, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert D. Marks, M.D. prescribe under Medicare Part D?
In 2024, Robert D. Marks, M.D. had 3,787 Medicare Part D claims for 952 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.