Robert Martin Marcus, M.D.
Internal Medicine Physician · Atlanta, GA
Robert Martin Marcus, M.D. is an internal medicine physician with a practice address in Atlanta, Georgia, and NPI 1588631923, issued on Mar 3, 2006. Check the license (Georgia 035469, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- Robert Martin Marcus
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 035469 GA
Self-reported in NPPES; status is on the state search - Practice location
- 4890 Roswell RD, Atlanta, GA 30342
- Phone
- (404) 255-9244
- Enumerated
- Mar 3, 2006
- Record last updated
- Nov 10, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (404) 255-9114
- Medicare enrollment
- Enrolled (PECOS I20080401000729); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,911 in Georgia → Look up another NPI →
Also registered at 4890 Roswell RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Martin Marcus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 035469Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% more Medicare Part D claims than the average internal medicine physician in 2024
5,805 Medicare Part D claims for 597 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Atorvastatin Calcium397 claims
- Losartan Potassium269 claims
- Amlodipine Besylate244 claims
- Levothyroxine Sodium217 claims
- Metoprolol Succinate213 claims
- Rosuvastatin Calcium188 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 90.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $647.82
22 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. 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 2 group practices
- Physiotherapy Associates IncSmyrna, GA
- Piedmont Medical Care CorporationAtlanta, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Martin Marcus among 3,911 internal medicine physician records in Georgia
Robert Martin Marcus, M.D. is one of 3,911 internal medicine physician records with a practice address in Georgia. 81% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 57% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1990 · median 2005 among the 2,535 with a school on file
- Record last updated2015 · 51% 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 Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
870 internal medicine physician records list a practice address in Atlanta
They are 870 of the 31,476 NPPES records with a practice address in Atlanta, and 3,911 internal medicine physician records in Georgia.
All 3,911 in Georgia → Every provider in Atlanta → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Allan Bleich, MDAtlanta, GA 303421952300691
- Jeffrey Clark, MDAtlanta, GA 303421316946957
- Bobb Cucher, MDAtlanta, GA 303421003803347
- Marie Garrity, MDAtlanta, GA 303421629066584
- Sandra Levy, MDAtlanta, GA 303421205893559
- Meenal Lothe, M.D.Atlanta, GA 303421770588196
- Frank Marxer, MDAtlanta, GA 303421144229592
- Syed Rahman, M.D.Atlanta, GA 303421568420081
Common questions
What is Robert Martin Marcus, M.D.'s NPI number?
Robert Martin Marcus, M.D.'s National Provider Identifier (NPI) is 1588631923, issued on Mar 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Martin Marcus, M.D. located?
The NPPES record lists a practice address at 4890 Roswell RD, Atlanta, GA, 30342. Phone: (404) 255-9244. Providers update this record themselves, so call before visiting.
How can I verify Robert Martin Marcus, M.D.'s license?
NPPES lists Georgia license number 035469, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert Martin Marcus, M.D. prescribe under Medicare Part D?
In 2024, Robert Martin Marcus, M.D. had 5,805 Medicare Part D claims for 597 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Robert Martin Marcus, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.