DR. ALEXIS CHRIS ARGOUDELIS M.D.
NPI 1639270002
Internal Medicine - Nephrology in Saint Louis, MO

Q: What is Alexis Argoudelis's NPI number?

The NPI number for Alexis Argoudelis is 1639270002. It was assigned to this individual provider in the NPPES registry on September 26, 2006.

Q: What is Alexis Argoudelis's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Alexis Argoudelis was last updated on August 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 26, 2006PECOS EnrolledAccepts Medicare Assignment

450 N NEW BALLAS RD STE 204, SAINT LOUIS, MO 63141(314) 991-0137(314) 991-0603 Get Directions Write a Review

NPPES record last updated: August 6, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Alexis Chris Argoudelis M.d. NPPES

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

DR. ALEXIS CHRIS ARGOUDELIS M.D. (NPI 1639270002) is an individual nephrology provider in Saint Louis, Missouri, licensed in Missouri (2007016504) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Ssm St Clare Health Center, and is a graduate of Southern Illinois University School Of Medicine (2004).

NPPES Registry Identity

NPI1639270002

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameDR. ALEXIS CHRIS ARGOUDELISCredential: M.D.

Location Address450 N NEW BALLAS RD STE 204Saint Louis, MO 63141-6836

Mailing AddressPo Box 840185Kansas City, MO 64184-0185 · (314) 991-0137 · Fax (314) 991-0603

Phone(314) 991-0137

Fax(314) 991-0603

Sole ProprietorYes

Medical School CMSSouthern Illinois University School Of MedicineGraduated 2004

Enumeration DateSeptember 26, 2006

Last NPPES UpdateAugust 6, 2023

NPPES CertifiedAugust 6, 2023

✔ NPI 1639270002 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 · 2007016504

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.

450 N NEW BALLAS RD STE 204, Saint Louis, MO 63141

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Alexis Chris Argoudelis M.d. 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 ID5395937874

PECOS Enrollment IDI20101004000572

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.

Medicare Billing Reassignment

Medicare enrollment records show Alexis Argoudelis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Nephrology And Hypertension Specialists, LLC

Same address

Nephrology

450 N NEW BALLAS RD STE 204
Creve Coeur, MO 63141

Reassigned Medicare billing, Missouri enrollment
8 clinicians in this Medicare group

NPI 1770554842 (314) 991-0137

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

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.

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.

418 services125 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

177 services53 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

175 services91 patients

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.

158 services31 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.

87 services81 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.

78 services64 patients

Hospital Affiliations CMS Care Compare 5

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

Ssm Health Saint Louis University Hospital

Acute Care Hospitals · Saint Louis, MO

1/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number260105

Location3635 Vista AveSaint Louis, MO 63110 · St. Louis City County

Emergency services

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

Missouri Baptist Sullivan Hospital

Critical Access Hospitals · Sullivan, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number261337

Location751 Sappington Bridge RdSullivan, MO 63080 · Franklin County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63141 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 6

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

KATINA D SMITH NP-C

Nurse Practitioner (Adult Health)

450 N NEW BALLAS RD STE 204
SAINT LOUIS, MO 63141

St. Louis County (314) 991-0137

LISSA LOPEZ-CONCAGH MD

Internal Medicine (Nephrology)

450 N NEW BALLAS RD STE 204
SAINT LOUIS, MO 63141

St. Louis County (314) 991-0137

MARGARET MEIER M.D.

Internal Medicine (Nephrology)

450 N NEW BALLAS RD STE 204
SAINT LOUIS, MO 63141

St. Louis County (314) 991-0137

EMMY THUY LE DNP, APRN, FNP-BC

Nurse Practitioner (Adult Health)

450 N NEW BALLAS RD STE 204
SAINT LOUIS, MO 63141

St. Louis County (314) 991-0137

NEPHROLOGY AND HYPERTENSION SPECIALISTS, LLC

Internal Medicine (Nephrology)

450 N NEW BALLAS RD STE 204
CREVE COEUR, MO 63141

St. Louis County (314) 991-0137

JUAN C GARCIA MD

Internal Medicine (Nephrology)

450 N NEW BALLAS RD STE 204
SAINT LOUIS, MO 63141

St. Louis County (314) 991-0137

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 Alexis Argoudelis's NPI number?

The NPI number for Alexis Argoudelis is 1639270002. It was assigned to this individual provider in the NPPES registry on September 26, 2006.

Where is Alexis Argoudelis located?

Alexis Argoudelis practices at 450 N New Ballas Rd Ste 204, Saint Louis, MO 63141. The listed phone number is (314) 991-0137.

What is Alexis Argoudelis's specialty?

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

Is Alexis Argoudelis enrolled in Medicare?

Yes. Alexis Argoudelis 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.

Which organization bills Medicare for Alexis Argoudelis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexis Argoudelis reassigns Medicare benefits to Nephrology And Hypertension Specialists, LLC (Creve Coeur, MO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alexis Argoudelis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexis Argoudelis accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 4 other insurers list Alexis Argoudelis 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 Alexis Argoudelis affiliated with any hospitals?

According to CMS data, Alexis Argoudelis is affiliated with Ssm St Clare Health Center, Ssm Health St Mary's Hospital - St Louis, Ssm Health Saint Louis University Hospital, Missouri Baptist Medical Center and Missouri Baptist Sullivan Hospital.

When was this NPI record last updated?

The NPPES record for Alexis Argoudelis was last updated on August 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.