Doctor profile · Federal record
Dr. John Mellas, MD
Nephrology Physician (CMS: Nephrology) · Fenton, MO
- NPI 1497712079
- Accepts Medicare
- 49 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1011 Bowles Ave Ste 220
Fenton, MO 630262384
(636) 681-3030
fax (636) 326-1545 - Additional location
-
450 N New Ballas RD Ste 204
Saint Louis, MO 631416836
(314) 991-0137
fax (314) 991-0603
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- December 20, 2023
- Year of graduation
- 1977 — 49 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Missouri #R3E73
- Medicaid
- MO #202250106
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1497712079. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
799
Distinct HCPCS
9
Medicare allowed
$159,467
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 310 | 45 | $336 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 182 | 81 | $77 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 80 | 45 | $69 | |
90937 |
Hemodialysis procedure requiring repeated evaluation | 52 | 25 | $99 | |
90935 |
Hemodialysis procedure with physician evaluation | 45 | 16 | $70 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 42 | 38 | $169 | |
99496 |
Transitional care management services for problem of high complexity | 39 | 16 | $261 | |
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 35 | 26 | $277 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 14 | 12 | $48 |
In context: peer comparison
Among 1 peers in Fenton Nephrology Physician, average services per provider: 88. This provider delivers 9.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,330
Patients
294
Total drug cost
$64,736
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 198 | 47 | $1,366 |
| Sevelamer Carbonate | Generic | 183 | 46 | $41,639 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 174 | 19 | $6,095 |
| Alprazolam | Generic | 118 | 15 | $1,205 |
| Carvedilol | Generic | 109 | 25 | $1,271 |
| Furosemide | Generic | 67 | 21 | $520 |
| Azithromycin | Generic | 62 | 24 | $290 |
| Metoprolol Succinate | Generic | 59 | 17 | $736 |
| Atorvastatin Calcium | Generic | 58 | 13 | $596 |
| Hydralazine Hcl | Generic | 57 | 14 | $1,809 |
Frequently asked questions
What is Dr. John Mellas's medical specialty?
Dr. John Mellas practices Nephrology Physician in Fenton, MO.
Where does Dr. John Mellas practice?
Dr. John Mellas practices at 1011 Bowles Ave Ste 220, Fenton, MO 630262384. Office phone: 6366813030.
What is Dr. John Mellas's NPI?
Dr. John Mellas's National Provider Identifier (NPI) is 1497712079, issued by NPPES.
Does Dr. John Mellas accept Medicare assignment?
Yes. Dr. John Mellas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Mellas commonly perform?
Top Medicare-reported procedures in 2023: Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.