Marc Eisenbaum, M.D.
NPI 1083710008 · Internal Medicine Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Eisenbaum, M.D. is a Internal Medicine Physician provider in Fairfax, VA (NPI 1083710008).
Provider details
- NPI number
- 1083710008
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0101040504 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,314 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 839 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 542 | $141 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 538 | $18 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 523 | $101 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 409 | $144 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 83 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Simvastatin | 473 | 147 |
| Atenolol | 224 | 66 |
| Hydrochlorothiazide | 218 | 69 |
| Losartan Potassium | 214 | 68 |
| Atorvastatin Calcium | 209 | 72 |
| Lisinopril | 168 | 49 |
| Amlodipine Besylate | 168 | 55 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-16
- Last updated
- 2026-06-03
- Certified
- 2026-06-03
Frequently asked questions
- What is Marc Eisenbaum's NPI number?
- Marc Eisenbaum's National Provider Identifier (NPI) is 1083710008, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Eisenbaum's specialty?
- Marc Eisenbaum is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Eisenbaum located?
- Marc Eisenbaum's practice location on file with NPPES is 3580 Joseph Siewick Dr Ste 304, Fairfax, VA 22033-1764.
- What is Marc Eisenbaum's phone number?
- The practice phone number listed in the NPPES registry for Marc Eisenbaum is (703) 758-8313.
- Does Marc Eisenbaum accept Medicare?
- Marc Eisenbaum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Eisenbaum's NPI active?
- Yes — Marc Eisenbaum's NPI (1083710008) is active in the NPPES registry as of the last update on 2026-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.