Nicholas John Mayer, D.O.
Nephrology Physician · Florissant, MO
Nicholas John Mayer, D.O. is a nephrology physician with a practice address in Florissant, Missouri, and NPI 1104075597, issued on Sep 10, 2008. Check the license (Missouri 2009007663, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Nicholas John Mayer
- Credential
- D.O.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 2009007663 MO
036123985 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1265 Graham RD Ste 1, Florissant, MO 63031
- Phone
- (314) 741-1600
- Enumerated
- Sep 10, 2008
- Record last updated
- May 22, 2024
- Fax
- (314) 741-1677
- Medicaid IDs
- 1104075597 MO
300117440001 IL - Medicare enrollment
- Enrolled (PECOS I20090810000242); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 285 in Missouri → Look up another NPI →
Also registered at 1265 Graham RD Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Abeid, M.D.Nephrology Physician1205020666
- Annette Hood, MSN,RN,CS-ANPNurse Practitioner1174611537
- Sameed Lodhi, MDNephrology Physician1356827182
- Donovan Polack, MDNephrology Physician1659324465
Verify Nicholas John Mayer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2009007663Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average nephrology physician in 2024
4,743 Medicare Part D claims for 453 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Losartan Potassium364 claims
- Chlorthalidone300 claims
- Atorvastatin Calcium253 claims
- Spironolactone227 claims
- Calcitriol187 claims
- Carvedilol185 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $904.78
18 payments; by number, the most common kind was food and beverage; the largest payer was Fresenius USA Marketing, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- St Louis Kidney Care LLCFlorissant, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas John Mayer among 285 nephrology physician records in Missouri
Nicholas John Mayer, D.O. is one of 285 nephrology physician records with a practice address in Missouri. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 61% of them.
- NPI issued2008 · 61% of these records are older, 32% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2004 · median 2000 among the 212 with a school on file
- Record last updated2024 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Missouri
There are 285 nephrology physician records in Missouri.
All 285 in Missouri → Every provider in Florissant → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Christopher Abeid, M.D.Florissant, MO 630311205020666
- Felicia Bentley, MDFlorissant, MO 630311154393437
- Sameed Lodhi, MDFlorissant, MO 630311356827182
- Donovan Polack, MDFlorissant, MO 630311659324465
- Ana Stark, MDFestus, MO 630281811188758
- Sarah Sundet, D.O., MBAFestus, MO 630281316186836
- John Mellas, MDFenton, MO 630261497712079
- Veena Krishnan, MDBridgeton, MO 630441871567586
Common questions
What is Nicholas John Mayer, D.O.'s NPI number?
Nicholas John Mayer, D.O.'s National Provider Identifier (NPI) is 1104075597, issued on Sep 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas John Mayer, D.O. located?
The NPPES record lists a practice address at 1265 Graham RD Ste 1, Florissant, MO, 63031. Phone: (314) 741-1600. Providers update this record themselves, so call before visiting.
How can I verify Nicholas John Mayer, D.O.'s license?
NPPES lists Missouri license number 2009007663, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nicholas John Mayer, D.O. prescribe under Medicare Part D?
In 2024, Nicholas John Mayer, D.O. had 4,743 Medicare Part D claims for 453 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.