Physician Profile
George Leonard Marks, MD
Unclaimed ProfileAbout Dr. Marks
Based in Los Angeles, CA, George Leonard Marks, MD is listed in the NPI registry under internal medicine. George graduated from Perelman School of Med at the University of Pennsylvania in 1976. According to Medicare claims data, George cared for 285 Medicare patients across 603 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (323) 906-0050
- Email not available
Practice Locations
866 N VERMONT AVE STE 3
Los Angeles, CA 90029
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
603 services · 285 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
14 |
| Routine electrocardiogram (ecg) using at least 12 leads with tracing | Treatment | 93005 |
255 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
11 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
287 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
18 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
18 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other internal medicines in Los Angeles 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Perelman School of Med at the University of Pennsylvania 8
Other providers in the same specialty who trained at the same institution.
Class of 1976 at Perelman School of Med at the University of Pennsylvania 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Marks's specialty?
Dr. Marks is an internal medicine in Los Angeles, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where can I find Dr. Marks?
Dr. Marks is listed at 866 N VERMONT AVE STE 3, Los Angeles, CA 90029. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Marks?
The number on file is (323) 906-0050. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Marks's NPI number?
Dr. Marks's National Provider Identifier is 1578589602. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Marks's medical education?
Dr. Marks attended Perelman School of Med at the University of Pennsylvania, graduating in 1976. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Marks been practicing?
Dr. Marks has 50 years experience. Calculated from a graduation year of 1976, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Marks known for?
According to Medicare billing data, Dr. Marks performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as routine electrocardiogram using at least 12 leads with tracing and ultrasound of heart with color-depicted blood flow, rate, direction and valve function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Marks confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marks. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.