Dr. Marc A. Eisenbaum, MD
- Medicare services, 2024
- 3,388
- Medicare patients, 2024
- 614
- Part D claims, 2024
- 4,569
- MIPS score, 2024
- 17
- Hospital affiliations
- 4
- Practice address
- 3600 Joseph Siewick Drive, Fairfax, VA 22033
- Practice phone
- Call (703) 391-4170
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Eisenbaum's professional email, personal email and mobile number
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Dr. Marc A. Eisenbaum is an internist in Fairfax, Virginia
Dr. Eisenbaum practices at Inova Fair Oaks Hospital in Fairfax, Virginia, part of Inova Health Care Services.
Dr. Eisenbaum's NPI, 1083710008, was assigned on September 16, 2006. Dr. Eisenbaum graduated from George Washington University School of Medicine in 1981. Dr. Eisenbaum holds Virginia license 0101040504.
- NPI
- 1083710008NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072709906
- NPI enumeration date
- September 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (703) 391-4170
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marc A. Eisenbaum practices at Inova Fair Oaks Hospital in Fairfax, Virginia
Dr. Eisenbaum's primary practice is Inova Fair Oaks Hospital, at 3600 Joseph Siewick Drive, Fairfax, VA 22033 in Fairfax County. The practice phone is (703) 391-4170.
- Inova Fair Oaks Hospital3600 Joseph Siewick Drive, Fairfax, VA 22033 · Fairfax CountyPhone(703) 391-4170
Source: Dmand AI Affiliation Data
Dr. Marc A. Eisenbaum is affiliated with 7 sites of care and 2 medical groups
Dr. Eisenbaum's primary practice is Inova Fair Oaks Hospital in Fairfax, Virginia, part of Inova Health Care Services. Dr. Eisenbaum is also affiliated with Inova Fairfax Hospital. The medical group on file is Select Rehabilitation. Dmand AI also links Dr. Eisenbaum to 2 more hospitals, 2 home health agencies, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marc A. Eisenbaum's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Eisenbaum practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Inova Fair Oaks Hospital | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Marc A. Eisenbaum is one of 3,339 internists in Virginia
Internal medicine is Dr. Eisenbaum's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Eisenbaum is licensed in Virginia.
Specialties and state licenses
- Internal medicine, VirginiaPrimary
Internists near Dr. Eisenbaum
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. Marc A. Eisenbaum billed Medicare for 3,388 services in 2024
CMS data shows 3,388 Medicare services from Dr. Eisenbaum across 11 procedure codes in 2024, for 614 Medicare patients. Medicare paid $192,637 for them. Every service was in an office.
Dr. Eisenbaum's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3662024: 1,3134%
- Other services
- 2023: 5392024: 1,06397%
- Surgery
- 2023: 8042024: 8394%
- Tests and treatments
- 2023: 1632024: 1736%
Dr. Eisenbaum compared with the Virginia median for internists, 2024
- Dr. Eisenbaum
- Virginia median
- Medicare services
- 3,388vs 6075.6 times
- Medicare patients
- 614vs 2462.5 times
- Part D claims
- 4,054vs 22418.1 times
Medians across 3,182 internists in Virginia with Dmand AI profiles that report each measure.
Dr. Eisenbaum's 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. Eisenbaum and other internists in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marc A. Eisenbaum treated 614 Medicare patients in 2024, average age 76
CMS counts 614 Medicare patients who saw Dr. Eisenbaum in 2024. The largest group is 75 to 84, with 279 patients. 75% of them have high cholesterol, and 62% have high blood pressure. Their average risk score is 0.83, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Eisenbaum's median patient age at 72, with 45% women.
Dr. Eisenbaum's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Eisenbaum's Medicare patients by sex, 2024
- Women25542%
- Men35958%
Chronic conditions among Dr. Eisenbaum's Medicare patients, 2024
- High cholesterol75%
- High blood pressure62%
- Arthritis42%
- Cancer18%
- Ischemic heart disease18%
- Atrial fibrillation16%
- Diabetes16%
- Chronic kidney disease12%
Share of Medicare patients with each condition. A patient can have several.
Dr. Eisenbaum's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women45%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marc A. Eisenbaum wrote 4,569 Medicare Part D claims in 2024
In 2024, Dr. Eisenbaum wrote 4,569 Medicare Part D claims for 548 patients. 92% of them were for generic drugs. CMS names the drug for 4,054 of them, across 83 drugs with 11 or more claims each, at $244,138 in total drug cost. In 2023, CMS named 3,109 claims across 61 drugs.
Dr. Eisenbaum's Part D claims by kind of drug, 2024
- Generic4,190 claims92%
- Brand-name367 claims8%
- Other12 claims0%
Dr. Eisenbaum's 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. Eisenbaum's Part D claims, 2024
- Opioids0%11 of 4,569 claims
- Antibiotics3%123 of 4,569 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: 3,1092024: 4,05430%
Drugs named by CMS: 83 in 2024, 61 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. Marc A. Eisenbaum scored 17 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 17 out of 100 for Dr. Eisenbaum for performance year 2024, reported individually. Dr. Eisenbaum accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Eisenbaum's MIPS scores, performance year 2024
- 17of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 58of 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. Marc A. Eisenbaum received $345 in industry payments from 2016 to 2020
CMS Open Payments shows 20 general payments to Dr. Eisenbaum from 6 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $193.
General payments to Dr. Eisenbaum by program year, 2016 to 2020
Companies that paid Dr. Eisenbaum the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marc A. Eisenbaum graduated from George Washington University School of Medicine
Dr. Eisenbaum graduated from George Washington University School of Medicine in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marc A. Eisenbaum'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. Marc A. Eisenbaum
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. Marc A. Eisenbaum's NPI number?
Dr. Marc A. Eisenbaum's NPI number is 1083710008. It was assigned on September 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marc A. Eisenbaum?
Dr. Marc A. Eisenbaum is an internist in Fairfax, Virginia. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Marc A. Eisenbaum practice?
Dr. Eisenbaum practices at 3600 Joseph Siewick Drive, Fairfax, VA 22033. Dr. Eisenbaum's primary practice is Inova Fair Oaks Hospital in Fairfax, Virginia, part of Inova Health Care Services. Dmand AI also links Dr. Eisenbaum to 2 hospitals, 2 home health agencies, 1 group practice or clinic and 1 medical group.
What is Dr. Marc A. Eisenbaum's office phone number?
The practice phone on file for Dr. Eisenbaum is (703) 391-4170.
What is Dr. Marc A. Eisenbaum's medical license number?
Dr. Eisenbaum holds Virginia license 0101040504.
Which hospitals is Dr. Marc A. Eisenbaum affiliated with?
Dr. Eisenbaum practices at Inova Fair Oaks Hospital in Fairfax, Virginia. Dr. Eisenbaum is also affiliated with Inova Fairfax Hospital. Dmand AI links Dr. Eisenbaum to 2 more hospitals.
What medical group is Dr. Marc A. Eisenbaum part of?
Dr. Eisenbaum is linked to Select Rehabilitation. Dmand AI links Dr. Eisenbaum to 1 more medical group.
Does Dr. Marc A. Eisenbaum accept Medicare?
Yes. CMS data shows Dr. Eisenbaum billed Medicare for 3,388 services in 2024, and Dr. Eisenbaum accepts Medicare assignment.
What is Dr. Marc A. Eisenbaum's MIPS score?
Dr. Eisenbaum's MIPS final score for performance year 2024 is 17 out of 100, reported individually.
How many Medicare patients does Dr. Marc A. Eisenbaum see?
CMS counts 614 Medicare patients who saw Dr. Eisenbaum in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Dr. Marc A. Eisenbaum bill to Medicare?
In 2024, Dr. Eisenbaum's most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. Marc A. Eisenbaum go to medical school?
Dr. Eisenbaum graduated from George Washington University School of Medicine in 1981.
What drugs does Dr. Marc A. Eisenbaum prescribe most?
In 2024 Medicare Part D data, Dr. Eisenbaum's most prescribed drugs by claims were Simvastatin, Atenolol and Hydrochlorothiazide.
Has Dr. Marc A. Eisenbaum received payments from drug or device companies?
CMS Open Payments shows $345 in general payments to Dr. Eisenbaum from 6 companies from 2016 to 2020. The largest total came from Novo Nordisk Inc.
How long has Dr. Marc A. Eisenbaum been practicing?
Dr. Eisenbaum graduated from medical school in 1981, 45 years ago.
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