Dean Mellas, MD
Nephrology Physician · Saint Louis, MO
Dean Mellas, MD is a nephrology physician with a practice address in Saint Louis, Missouri, and NPI 1861178535, issued on Jun 26, 2023. Check the license (Missouri 2026020035, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Dean Mellas
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 2026020035 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 362-9096
- Enumerated
- Jun 26, 2023
- Record last updated
- Jun 8, 2026
- Fax
- (314) 747-5213
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 285 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dean Mellas 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 2026020035Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average nephrology physician in 2024
105 Medicare Part D claims for 30 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Levothyroxine Sodium14 claims
- Atorvastatin Calcium11 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.
Dean Mellas among 285 nephrology physician records in Missouri
Dean Mellas, 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 2023, is newer than 96% of them.
- NPI issued2023 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2026 · 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 Saint Louis → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Alejandro Alvarez, MDSaint Louis, MO 631101508846304
- Steven Cheng, MDSaint Louis, MO 631101154349611
- Daniel Coyne, MDSaint Louis, MO 631101427074749
- James Delmez, MDSaint Louis, MO 631101306862537
- Decha Enkvetchakul, MDSaint Louis, MO 631101205852514
- Andreas Herrlich, MDSaint Louis, MO 631101770567414
- Benjamin Humphreys, MDSaint Louis, MO 631101497798169
- Tingting Li, MDSaint Louis, MO 631101831154053
Common questions
What is Dean Mellas, MD's NPI number?
Dean Mellas, MD's National Provider Identifier (NPI) is 1861178535, issued on Jun 26, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Dean Mellas, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 362-9096. Providers update this record themselves, so call before visiting.
How can I verify Dean Mellas, MD's license?
NPPES lists Missouri license number 2026020035, 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 Dean Mellas, MD prescribe under Medicare Part D?
In 2024, Dean Mellas, MD had 105 Medicare Part D claims for 30 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.