Physician Profile
Nicholas J. Mayer, D.O.
Unclaimed ProfileAbout Dr. Mayer
Based in Florissant, MO, Nicholas J. Mayer, D.O. is listed in the NPI registry under internal medicine. Nicholas graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2004. Nicholas is also listed as specializing in nephrology. Medicare claims data shows Nicholas provided 1,120 services to 512 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
- (314) 741-1600
- Email not available
Practice Locations
1265 GRAHAM RD STE 1
Florissant, MO 63031
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
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Brain & Nerves
Cardiac and vascular
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Rheumatologic and pain
Procedures & services
Most searched procedures
Preventive and evaluation
Screening and diagnostic testing
- Asthma Breathing Test
- Cancer Screening Orders
- Cholesterol and Lipid Check
- EKG Heart Tracing
- Teen Depression Screening
Bones & Joints
Exams & Consultations
Heart & Circulation
Lungs & Breathing
Metabolic & Weight
Office procedures
Office Procedures
Preventive & Routine Care
Screenings & Diagnostics
Procedures Most Often Billed to Medicare
1,120 services · 512 patients · 9 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Dialysis services, 4 or more physician visits per month (20 years or older) | Treatment | 90960 |
120 |
| 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' | Billing code | G2211 |
292 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
264 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
177 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
109 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
67 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
46 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
24 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
21 |
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 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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 — 31 related providers in 4 groups
Other internal medicines in Florissant 8
Same specialty, same city.
Trained at At Still University of Health Sciences, College of Osteo Med, Kirksville 7
Other providers in the same specialty who trained at the same institution.
Class of 2004 at At Still University of Health Sciences, College of Osteo Med, Kirksville 8
Providers who graduated from the same medical school in the same year.
Also performs Dialysis services, 4 or more physician visits per month (20 years or older) 8
Providers in MO who bill this service to Medicare most often.
Common questions
What is Dr. Mayer's specialty?
Dr. Mayer is an internal medicine in Florissant, MO. 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 1265 GRAHAM RD STE 1, Florissant, MO 63031. 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 (314) 741-1600. 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 1104075597. 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 At Still University of Health Sciences, College of Osteo Med, Kirksville, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mayer have?
Dr. Mayer has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Mayer known for?
According to Medicare billing data, Dr. Mayer provides treatments such as dialysis services, 4 or more physician visits per month, 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.