Physician Profile
Andrew G Mayer, MD
Unclaimed ProfileAbout Dr. Mayer
Andrew G Mayer, MD is a healthcare provider in La Jolla, CA specializing in internal medicine. Andrew trained at State University of New York at Buffalo School of Medicine, graduating in 2000. Andrew is also listed as specializing in gastroenterology. Medicare claims data shows Andrew provided 580 services to 567 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
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (858) 453-5200
- Email not available
Practice Locations
9850 GENESEE AVE #820
La Jolla, CA 92037
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
580 services · 567 patients · 11 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
152 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
76 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
75 |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
52 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
12 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
85 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
48 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
27 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
26 |
| Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Billing code | G0121 |
15 |
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 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
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.
More connections — 30 related providers in 4 groups
Other internal medicines in La Jolla 6
Same specialty, same city.
Trained at State University of New York at Buffalo School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2000 at State University of New York at Buffalo School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Mayer specialize in?
Dr. Mayer is an internal medicine in La Jolla, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Mayer located?
Dr. Mayer is listed at 9850 GENESEE AVE #820, La Jolla, CA 92037. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Mayer's phone number?
The number on file is (858) 453-5200. 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 1215949201. 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
Where did Dr. Mayer go to medical school?
Dr. Mayer attended State University of New York at Buffalo School of Medicine, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mayer have?
Dr. Mayer has 26 years experience. Calculated from a graduation year of 2000, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Mayer do most often?
According to Medicare billing data, Dr. Mayer performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of large bowel using a flexible endoscope and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, 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.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.