Dr. Mark Constantine Zaros, MD
- Medicare services, 2024
- 284
- Medicare patients, 2024
- 89
- Part D claims, 2024
- 379
- MIPS score, 2024
- 93
- Hospital affiliations
- 2
- Practice address
- 80 Jesse Hill, Jr Drive SE, Atlanta, GA 30303
- Practice phone
- Call (404) 616-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zaros' professional email, personal email and mobile number
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Dr. Mark Constantine Zaros is an internist in Atlanta, Georgia
Dr. Zaros practices at Grady Memorial Hospital in Atlanta, Georgia, part of The Fulton-DeKalb Hospital Authority.
Dr. Zaros' NPI, 1639393093, was assigned on April 13, 2007. Dr. Zaros graduated from University of Miami, Lm Miller School of Medicine in 2004. Dr. Zaros holds Washington license MD60037585.
- NPI
- 1639393093NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254495666
- NPI enumeration date
- April 13, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (404) 616-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Constantine Zaros practices at Grady Memorial Hospital in Atlanta, Georgia
Dr. Zaros' primary practice is Grady Memorial Hospital, at 80 Jesse Hill, Jr Drive SE, Atlanta, GA 30303 in Fulton County. The practice phone is (404) 616-1000.
- Grady Memorial Hospital80 Jesse Hill, Jr Drive SE, Atlanta, GA 30303 · Fulton CountyPhone(404) 616-1000
Source: Dmand AI Affiliation Data
Dr. Mark Constantine Zaros is affiliated with 2 sites of care and 1 medical group
Dr. Zaros' primary practice is Grady Memorial Hospital in Atlanta, Georgia, part of The Fulton-DeKalb Hospital Authority. Dr. Zaros is also affiliated with Harborview Medical Center. The medical group on file is Emory Healthcare.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Constantine Zaros' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zaros practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Grady Memorial Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across The Fulton-DeKalb Hospital Authority and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark Constantine Zaros is one of 3,575 internists in Georgia
Internal medicine is Dr. Zaros' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Zaros is licensed in Washington.
Specialties and state licenses
- Internal medicine, WashingtonPrimary
Internists near Dr. Zaros
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark Constantine Zaros billed Medicare for 284 services in 2024
CMS data shows 284 Medicare services from Dr. Zaros across 4 procedure codes in 2024, for 89 Medicare patients. Medicare paid $21,840 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Zaros' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1982024: 28443%
Dr. Zaros compared with the Georgia median for internists, 2024
- Dr. Zaros
- Georgia median
- Medicare services
- 284vs 53647% below
- Medicare patients
- 89vs 19454% below
- Part D claims
- 88vs 33974% below
Medians across 3,344 internists in Georgia with Dmand AI profiles that report each measure.
Dr. Zaros' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zaros and other internists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Constantine Zaros treated 89 Medicare patients in 2024, average age 72
CMS counts 89 Medicare patients who saw Dr. Zaros in 2024. The largest group is 65 to 74, with 36 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 54% are also on Medicaid. Their average risk score is 3.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Zaros' median patient age at 69, with 50% women.
Dr. Zaros' Medicare patients by age, 2024
Dr. Zaros' Medicare patients by sex, 2024
- Women4854%
- Men4146%
Chronic conditions among Dr. Zaros' Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Diabetes56%
- Arthritis55%
- Chronic kidney disease47%
- Heart failure47%
- Mood disorders40%
- Stroke or TIA39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zaros' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Constantine Zaros wrote 379 Medicare Part D claims in 2024
In 2024, Dr. Zaros wrote 379 Medicare Part D claims for 79 patients. 72% of them were for generic drugs. CMS names the drug for 88 of them, across 5 drugs with 11 or more claims each, at $15,593 in total drug cost. In 2023, CMS named 63 claims across 5 drugs.
Dr. Zaros' Part D claims by kind of drug, 2024
- Generic274 claims72%
- Brand-name93 claims25%
- Other12 claims3%
Dr. Zaros' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Zaros' Part D claims, 2024
- Antibiotics4%16 of 379 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 632024: 8840%
Drugs named by CMS: 5 in 2024, 5 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mark Constantine Zaros scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Zaros for performance year 2024, reported as part of a group. Dr. Zaros accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Zaros' MIPS scores, performance year 2024
- 93of 100Final score
- 73.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mark Constantine Zaros received $210 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Zaros from 1 drug or device company in 2018. Speaker and faculty fees make up the largest share, 100% of the total. Baxter Healthcare paid the most, $210.
Companies that paid Dr. Zaros the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Constantine Zaros graduated from University of Miami, Lm Miller School of Medicine
Dr. Zaros graduated from University of Miami, Lm Miller School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Constantine Zaros's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark Constantine Zaros
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark Constantine Zaros' NPI number?
Dr. Mark Constantine Zaros' NPI number is 1639393093. It was assigned on April 13, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Constantine Zaros?
Dr. Mark Constantine Zaros is an internist in Atlanta, Georgia. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark Constantine Zaros practice?
Dr. Zaros practices at 80 Jesse Hill, Jr Drive SE, Atlanta, GA 30303. Dr. Zaros' primary practice is Grady Memorial Hospital in Atlanta, Georgia, part of The Fulton-DeKalb Hospital Authority.
What is Dr. Mark Constantine Zaros' office phone number?
The practice phone on file for Dr. Zaros is (404) 616-1000.
What is Dr. Mark Constantine Zaros' medical license number?
Dr. Zaros holds Washington license MD60037585.
Which hospitals is Dr. Mark Constantine Zaros affiliated with?
Dr. Zaros practices at Grady Memorial Hospital in Atlanta, Georgia. Dr. Zaros is also affiliated with Harborview Medical Center.
What medical group is Dr. Mark Constantine Zaros part of?
Dr. Zaros is linked to Emory Healthcare.
Does Dr. Mark Constantine Zaros accept Medicare?
Yes. CMS data shows Dr. Zaros billed Medicare for 284 services in 2024, and Dr. Zaros accepts Medicare assignment.
What is Dr. Mark Constantine Zaros' MIPS score?
Dr. Zaros' MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark Constantine Zaros see?
CMS counts 89 Medicare patients who saw Dr. Zaros in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. Mark Constantine Zaros bill to Medicare?
In 2024, Dr. Zaros' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Where did Dr. Mark Constantine Zaros go to medical school?
Dr. Zaros graduated from University of Miami, Lm Miller School of Medicine in 2004.
What drugs does Dr. Mark Constantine Zaros prescribe most?
In 2024 Medicare Part D data, Dr. Zaros' most prescribed drugs by claims were Atorvastatin Calcium, Eliquis and Esomeprazole Magnesium.
Has Dr. Mark Constantine Zaros received payments from drug or device companies?
CMS Open Payments shows $210 in general payments to Dr. Zaros from 1 company from 2018 to 2018. The largest total came from Baxter Healthcare.
How long has Dr. Mark Constantine Zaros been practicing?
Dr. Zaros graduated from medical school in 2004, 22 years ago.
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