George Marks, MD
NPI 1578589602 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
George Marks, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1578589602).
Provider details
- NPI number
- 1578589602
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- C39879 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
603 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 287 | $99 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Tracing93005 | 255 | $7 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 18 | $62 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 18 | $139 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 14 | $9 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Tartrate | 64 | 24 |
| Atorvastatin Calcium | 58 | 24 |
| Carvedilol | 54 | 18 |
| Furosemide | 48 | 20 |
| Rivaroxabanbrand: Xarelto | 39 | 12 |
| Amlodipine Besylate | 32 | 16 |
| Benazepril Hcl | 27 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$526 across 17 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-14
- Last updated
- 2011-06-20
Frequently asked questions
- What is George Marks's NPI number?
- George Marks's National Provider Identifier (NPI) is 1578589602, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Marks's specialty?
- George Marks is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is George Marks located?
- George Marks's practice location on file with NPPES is 866 N Vermont Ave Ste 3, Los Angeles, CA 90029-3587.
- What is George Marks's phone number?
- The practice phone number listed in the NPPES registry for George Marks is (323) 906-0050.
- Does George Marks accept Medicare?
- George Marks is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is George Marks's NPI active?
- Yes — George Marks's NPI (1578589602) is active in the NPPES registry as of the last update on 2011-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.