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MERCY CLINIC ONCOLOGY, LLC
NPI 1407169915
Internal Medicine - Hematology & Oncology in Washington, MO

Active since July 26, 2010
851 E 5TH ST, SUITE 304, WASHINGTON, MO 63090(636) 432-0055(636) 390-7332 Get Directions Write a Review

NPPES record last updated: April 25, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mercy Clinic Oncology, Llc NPPES

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

MERCY CLINIC ONCOLOGY, LLC (NPI 1407169915), doing business as St. John's Mercy Oncology, is a healthcare organization registered as a hematology & oncology in Washington, Missouri and active in the NPI registry since July 2010. The organization lists Kerry Dunger, Executive Director - Finance, as its authorized official.

NPPES Registry Identity

NPI1407169915
Entity TypeOrganization
Primary Taxonomy207RH0003X
Legal Business NameMERCY CLINIC ONCOLOGY, LLC
Location Address851 E 5TH ST, SUITE 304Washington, MO 63090-3135
Mailing Address851 E 5th St, Suite 304Washington, MO 63090-3135 · (636) 432-0055 · Fax (636) 390-7332
Phone(636) 432-0055
Fax(636) 390-7332
Organization SubpartYesParent: Mercy Clinic East Communities
Authorized OfficialKerry DungerExecutive Director - Finance · (314) 364-3707
Enumeration DateJuly 26, 2010
Last NPPES UpdateApril 25, 2025
NPPES CertifiedApril 25, 2025
✔ NPI 1407169915 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
851 E 5TH ST, Washington, MO 63090
Open in Google Maps ↗

Other Names 1

Former Legal Business NameSt. John's Mercy Oncology

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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 and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mercy Clinic Oncology, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

34

Medicare enrollment records show 34 clinicians reassign Medicare billing to Mercy Clinic Oncology, LLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 3 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 5

Hematology/Oncology14
Nurse Practitioner12
Medical Oncology4
Internal Medicine3
Hematology1

Nearest to this location (20)

See all 34
Muhammad Mirza, M.D.
Medical Oncology
NPI 1568561678
851 E 5TH ST SUITE 108
Washington, MO 63090
(636) 432-0055
✔ PECOS✔ Accepts MedicareSame address
Christopher Hueser, D.O.,M.S.
Medical Oncology
NPI 1578768321
901 PATIENTS FIRST DR ATTENTION: CANCER CENTER
Washington, MO 63090
(636) 390-1600
✔ PECOS✔ Accepts Medicare1.2 mi
Elizabeth Aholt, ANP-C
Nurse Practitioner
NPI 1568168623
901 PATIENTS FIRST DR STE 1100
Washington, MO 63090
(636) 390-1600
✔ PECOS✔ Accepts Medicare1.3 mi
Samir Dalia, MD
Hematology/Oncology
NPI 1235331455
15945 CLAYTON RD STE 120
Ballwin, MO 63011
(636) 256-5000
✔ PECOS✔ Accepts Medicare24 mi
Pascale Salem, MD
Hematology
NPI 1528081783
15945 CLAYTON RD STE 120
Ballwin, MO 63011
(636) 256-5000
✔ PECOS✔ Accepts Medicare24 mi
Jamshed Agha, MD
Hematology/Oncology
NPI 1720041395
1475 KISKER RD SUITE 180
Saint Charles, MO 63304
(636) 442-7300
✔ PECOS✔ Accepts Medicare25 mi
James Beattie, DO
Medical Oncology
NPI 1508829177
1000 E CHERRY ST # 300A
Troy, MO 63379
(636) 528-3382
✔ PECOS29 mi
Megan Harman, NP
Nurse Practitioner
NPI 1790254837
1000 E CHERRY ST STE 300A
Troy, MO 63379
(636) 528-3382
✔ PECOS✔ Accepts Medicare29 mi
Jennifer Kloth, NP-C
Nurse Practitioner
NPI 1194965939
12855 N 40 DR SUITE 200
Saint Louis, MO 63141
(314) 443-6465
✔ PECOS✔ Accepts Medicare30 mi
John Finnie, MD
Hematology/Oncology
NPI 1023088564
607 S NEW BALLAS RD SUITE 3300
Saint Louis, MO 63141
(314) 251-4986
✔ PECOS✔ Accepts Medicare32 mi
Christina Min, M.D.
Hematology/Oncology
NPI 1639389869
607 S NEW BALLAS RD STE 3300
Saint Louis, MO 63141
(314) 251-4400
✔ PECOS✔ Accepts Medicare32 mi
Meghan Schutt, FNP-BC
Nurse Practitioner
NPI 1376010181
607 S NEW BALLAS RD STE 3300
Saint Louis, MO 63141
(314) 251-4400
✔ PECOS✔ Accepts Medicare32 mi
Somasekhara Bandi, M.D.
Hematology/Oncology
NPI 1922034321
607 S NEW BALLAS RD SUITE 3125
Saint Louis, MO 63141
(314) 353-1870
✔ PECOS✔ Accepts Medicare32 mi
Hsiao Ou Hu, M.D.
Hematology/Oncology
NPI 1811962657
607 S NEW BALLAS RD SUITE 3300
Saint Louis, MO 63141
(314) 251-4986
✔ PECOS✔ Accepts Medicare32 mi
Michele Nobs, N.P.
Nurse Practitioner
NPI 1386619138
607 S NEW BALLAS RD SUITE 3300
Saint Louis, MO 63141
(314) 251-4986
✔ PECOS✔ Accepts Medicare32 mi
Bethany Sleckman, M.D.
Medical Oncology
NPI 1861814386
607 S NEW BALLAS RD SUITE 3425
Saint Louis, MO 63141
(314) 251-7057
✔ PECOS✔ Accepts Medicare32 mi
Kavitha Kosuri, D.O.
Internal Medicine
NPI 1215981766
607 S NEW BALLAS RD SUITE 3300
Saint Louis, MO 63141
(314) 251-4400
✔ PECOS✔ Accepts Medicare32 mi
Deborah Perkins, FNP-BC
Nurse Practitioner
NPI 1053776179
10050 KENNERLY RD STE 2400
Saint Louis, MO 63128
(314) 849-6066
✔ PECOS✔ Accepts Medicare35 mi
Syed Hasan, MD
Internal Medicine
NPI 1285086868
1350 US HIGHWAY 61
Festus, MO 63028
(636) 931-3655
✔ PECOS✔ Accepts Medicare42 mi
Craig Siegel, MD
Internal Medicine
NPI 1295812733
1350 US HIGHWAY 61
Festus, MO 63028
(636) 931-3655
✔ PECOS✔ Accepts Medicare42 mi
See all 34 clinicians

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

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 Mercy Clinic Oncology, LLC's NPI number?

The NPI number for Mercy Clinic Oncology, LLC is 1407169915. It was assigned to this organization in the NPPES registry on July 26, 2010. The provider was formerly known as St. John's Mercy Oncology.

Where is Mercy Clinic Oncology, LLC located?

Mercy Clinic Oncology, LLC is located at 851 E 5th St Suite 304, Washington, MO 63090. The listed phone number is (636) 432-0055.

What is Mercy Clinic Oncology, LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Mercy Clinic Oncology, LLC enrolled in Medicare?

Yes. Mercy Clinic Oncology, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mercy Clinic Oncology, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 34 clinicians in 5 Medicare specialties reassign their Medicare billing to Mercy Clinic Oncology, LLC. A 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 the clinician's services. The largest specialties are Hematology/Oncology (14), Nurse Practitioner (12) and Medical Oncology (4). Of these, 1 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Mercy Clinic Oncology, LLC 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 2 other insurers list Mercy Clinic Oncology, LLC 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 Mercy Clinic Oncology, LLC was last updated on April 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.