Physician Profile
Unclaimed ProfileAbout Dr. Mayer
Based in Columbia, SC, Ruben L Mayer, MD is listed in the NPI registry under internal medicine. Ruben graduated from University of South Carolina School of Medicine in 1985. Medicare claims data shows Ruben provided 6,588 services to 4,992 patients.
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
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (803) 790-4700
- Email not available
Practice Locations
4540 TRENHOLM RD
Columbia, SC 29206
Procedures Most Often Billed to Medicare
6,588 services · 4,992 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
1,074 |
| X-ray of chest, 2 views | Imaging | 71046 |
48 |
| X-ray of lower and sacral spine, 2-3 views | Imaging | 72100 |
21 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
57 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
929 |
| Blood test, thyroid stimulating hormone (tsh) | Lab test | 84443 |
636 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
633 |
| Blood test, lipids (cholesterol and triglycerides) | Lab test | 80061 |
627 |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
594 |
| Automated urinalysis test | Lab test | 81003 |
505 |
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.
Other internal medicines at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other internal medicines in Columbia 8
Same specialty, same city.
Trained at University of South Carolina School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1985 at University of South Carolina School of Medicine 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 SC who bill this service to Medicare most often.
Common questions
What is Dr. Mayer's specialty?
Dr. Mayer is an internal medicine in Columbia, SC. 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. Mayer?
Dr. Mayer is listed at 4540 TRENHOLM RD, Columbia, SC 29206. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Mayer?
The number on file is (803) 790-4700. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Mayer?
Dr. Mayer's National Provider Identifier is 1891755039. 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. Mayer's medical education?
Dr. Mayer attended University of South Carolina School of Medicine, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mayer have?
Dr. Mayer has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Mayer known for?
According to Medicare billing data, Dr. Mayer performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as x-ray of chest, 2 views and x-ray of lower and sacral spine, 2-3 views; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Mayer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mayer. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.