DR. RISHI NATH SUD M.D.
NPI 1598749004
Family Medicine in Chesterfield, MO

Q: What is Rishi Sud's NPI number?

The NPI number for Rishi Sud is 1598749004. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Q: What is Rishi Sud's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Rishi Sud was last updated on August 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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 November 30, 2005PECOS Enrolled

977 TARA OAKS DR, CHESTERFIELD, MO 63005(773) 636-1646(314) 390-5404 Get Directions Write a Review

NPPES record last updated: August 2, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 2, 2026, Dec 20, 2024, Apr 11, 2019 and 3 more (6 updates tracked since 2016).

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About Dr. Rishi Nath Sud M.d. NPPES

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

DR. RISHI NATH SUD M.D. (NPI 1598749004) is an individual family medicine provider in Chesterfield, Missouri, licensed in Missouri (2017031914) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1598749004

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. RISHI NATH SUDCredential: M.D.

Location Address977 TARA OAKS DRChesterfield, MO 63005-3656

Mailing Address977 Tara Oaks DrChesterfield, MO 63005-3656 · (773) 636-1646 · Fax (314) 390-5404

Phone(773) 636-1646

Fax(314) 390-5404

Sole ProprietorNo

Enumeration DateNovember 30, 2005

Last NPPES UpdateAugust 2, 20266 updates tracked since enumeration

NPPES CertifiedAugust 2, 2026

✔ NPI 1598749004 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in MO · 2017031914

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

977 TARA OAKS DR, Chesterfield, MO 63005

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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 (PECOS)

Dr. Rishi Nath Sud M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignments

Medicare enrollment records show Rishi Sud reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

American Multispecialty Group Inc.

7.5 mi

Internal Medicine

555 MARYVILLE UNIVERSITY DR STE 240
Saint Louis, MO 63141

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

NPI 1972559532 (314) 851-1000

Dedicated Missouri Holding, LLC

1,066 mi

Internal Medicine

1395 NW 167TH ST
Miami Gardens, FL 33169

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

NPI 1053958082 (305) 628-6117

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63005 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

$86.32 typical visit price

range $55.65 – $169.38

Typical copayment $21.58 (range $13.91 – $42.34)

Most-billed visit code 99203

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.

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 Rishi Sud's NPI number?

The NPI number for Rishi Sud is 1598749004. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Where is Rishi Sud located?

Rishi Sud practices at 977 Tara Oaks Dr, Chesterfield, MO 63005. The listed phone number is (773) 636-1646.

What is Rishi Sud's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Rishi Sud enrolled in Medicare?

Yes. Rishi Sud is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Rishi Sud's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rishi Sud reassigns Medicare benefits to 2 organizations: American Multispecialty Group Inc. (Saint Louis, MO) and Dedicated Missouri Holding, LLC (Miami Gardens, FL). Each 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 Rishi Sud's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Rishi Sud 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 1 other insurer list Rishi Sud 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.

When was this NPI record last updated?

The NPPES record for Rishi Sud was last updated on August 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.