JOHN MELLAS MD
NPI 1497712079
Internal Medicine - Nephrology in Fenton, MO

Active since April 27, 2006PECOS EnrolledAccepts Medicare Assignment
1011 BOWLES AVE STE 220, FENTON, MO 63026(636) 681-3030(636) 326-1545 Get Directions Write a Review

NPPES record last updated: December 20, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About John Mellas Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN MELLAS MD (NPI 1497712079) is an individual nephrology provider in Fenton, Missouri, licensed in Missouri (R3E73) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Ssm St Clare Health Center, and maintains a secondary practice location in Saint Louis.

NPPES Registry Identity

NPI1497712079
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameJOHN MELLASCredential: MD
Location Address1011 BOWLES AVE STE 220Fenton, MO 63026-2384
Mailing Address1011 Bowles Ave Ste 220Fenton, MO 63026-2384 · (636) 681-3030 · Fax (636) 326-1545
Fax(636) 326-1545
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 1977
Enumeration DateApril 27, 2006
Last NPPES UpdateDecember 20, 2023
NPPES CertifiedDecember 20, 2023
NPI 1497712079 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License Licensed in MO · R3E73
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
1011 BOWLES AVE STE 220, Fenton, MO 63026

Secondary Practice Location 1

Location 1450 N New Ballas Rd Ste 204Saint Louis, MO 63141-6836 · Phone (314) 991-0137 · Fax (314) 991-0603

Other Identifiers 1

Medicaid202250106MO

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

John Mellas Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2062506132
PECOS Enrollment IDI20100116000292
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
235 services32 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
67 services33 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
55 services30 patients
Hemodialysis procedure requiring repeated evaluation 90937
Hemodialysis is a treatment that filters waste and excess fluids from your blood when your kidneys can't do this adequately. It's an ongoing process, requiring regular evaluations to monitor and adjust the treatment for optimal results.
44 services18 patients
Transitional care management services for problem of high complexity 99496
Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.
30 services13 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
24 services19 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ssm St Clare Health Center

Acute Care Hospitals · Fenton, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260081
Location1015 BowlesFenton, MO 63026 · Jefferson County
Emergency services Birthing friendly

Ssm Health St Mary's Hospital - St Louis

Acute Care Hospitals · Richmond Heights, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260091
Location6420 Clayton RdRichmond Heights, MO 63117 · St. Louis County
Emergency services Birthing friendly

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260108
Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63026 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Radiology (Vascular & Interventional Radiology)
1011 BOWLES AVE STE 220
FENTON, MO 63026
Internal Medicine (Nephrology)
1011 BOWLES AVE STE 220
FENTON, MO 63026

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Mellas's NPI number?

The NPI number for John Mellas is 1497712079. It was assigned to this individual provider in the NPPES registry on April 27, 2006.

Where is John Mellas located?

John Mellas practices at 1011 Bowles Ave Ste 220, Fenton, MO 63026. The listed phone number is (636) 681-3030.

What is John Mellas's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is John Mellas enrolled in Medicare?

Yes. John Mellas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does John Mellas accept?

Health plans from Oscar Insurance Company list John Mellas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is John Mellas affiliated with any hospitals?

According to CMS data, John Mellas is affiliated with Ssm St Clare Health Center, Ssm Health St Mary's Hospital - St Louis and Missouri Baptist Medical Center.

When was this NPI record last updated?

The NPPES record for John Mellas was last updated on December 20, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.