Nicholas Gourtzelis, MD
Nephrology Physician · St Louis, MO
Nicholas Gourtzelis, MD is a nephrology physician with a practice address in St Louis, Missouri, and NPI 1790734994, issued on May 8, 2006. Check the license (Missouri 2005006931, 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 Gourtzelis
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 2005006931 MO
Self-reported in NPPES; status is on the state search - Practice location
- 10004 Kennerly RD, St Louis, MO 63128
- Phone
- (314) 842-9669
- Enumerated
- May 8, 2006
- Record last updated
- Jan 22, 2024
- Fax
- (314) 842-1017
- Medicaid ID
- 207376708 MO
- Medicare enrollment
- Enrolled (PECOS I20050606000048); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 285 in Missouri → Look up another NPI →
Also registered at 10004 Kennerly RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nicholas Gourtzelis 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 2005006931Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average nephrology physician in 2024
1,350 Medicare Part D claims for 234 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. 13 claims were for opioids.
Most prescribed
- Calcitriol185 claims
- Hydralazine Hcl88 claims
- Furosemide80 claims
- Amlodipine Besylate75 claims
- Lisinopril74 claims
- Losartan Potassium74 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: $1,514.61
71 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- NHS South LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas Gourtzelis among 285 nephrology physician records in Missouri
Nicholas Gourtzelis, MD 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 48% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2000 · 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 St Louis → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Karth Antony, MDSaint Louis, MO 631281790756104
- Ruo-Qi Hu, MDSaint Louis, MO 631281144276072
- Zachary Kisley, DOSaint Louis, MO 631281629606298
- Gopal Krishnan, M.DSaint Louis, MO 631281780658716
- Meher Mallick, M.D.Saint Louis, MO 631281093789034
- Kabeya Mwintshi, MDSaint Louis, MO 631281316994460
- Christian Nwankwo, MDSaint Louis, MO 631281679772198
- Humayun Quadir, M.D.Saint Louis, MO 631281265413223
Common questions
What is Nicholas Gourtzelis, MD's NPI number?
Nicholas Gourtzelis, MD's National Provider Identifier (NPI) is 1790734994, issued on May 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Gourtzelis, MD located?
The NPPES record lists a practice address at 10004 Kennerly RD, St Louis, MO, 63128. Phone: (314) 842-9669. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Gourtzelis, MD's license?
NPPES lists Missouri license number 2005006931, 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 Gourtzelis, MD prescribe under Medicare Part D?
In 2024, Nicholas Gourtzelis, MD had 1,350 Medicare Part D claims for 234 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.