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MAHONING VALLEY HEMATOLOGY ONCOLOGY ASSOC. INC.
NPI 1215979588
Internal Medicine - Hematology & Oncology in Youngstown, OH

Active since June 12, 2006
835 SOUTHWESTERN RUN, YOUNGSTOWN, OH 44514(330) 318-1100(330) 318-1111 Get Directions Write a Review

NPPES record last updated: November 15, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mahoning Valley Hematology Oncology Assoc. Inc. NPPES

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

MAHONING VALLEY HEMATOLOGY ONCOLOGY ASSOC. INC. (NPI 1215979588) is a healthcare organization registered as a hematology & oncology in Youngstown, Ohio and active in the NPI registry since June 2006. The organization lists Chris A Knight, Owner, as its authorized official.

NPPES Registry Identity

NPI1215979588
Entity TypeOrganization
Primary Taxonomy207RH0003X
Legal Business NameMAHONING VALLEY HEMATOLOGY ONCOLOGY ASSOC. INC.
Location Address835 SOUTHWESTERN RUNYoungstown, OH 44514-3688
Mailing AddressPo Box 786536Philadelphia, PA 19178-6536 · (330) 318-1100 · Fax (330) 318-1111
Phone(330) 318-1100
Fax(330) 318-1111
Organization SubpartNo
Authorized OfficialChris A KnightOwner · (330) 318-1100
Enumeration DateJune 12, 2006
Last NPPES UpdateNovember 15, 2018
✔ NPI 1215979588 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.
835 SOUTHWESTERN RUN, Youngstown, OH 44514
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Absolute Total Care, Ambetter from Arkansas Health & Wellness 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)

Mahoning Valley Hematology Oncology Assoc. Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

7

Medicare enrollment records show 7 clinicians reassign Medicare billing to Mahoning Valley Hematology Oncology Assoc. Inc., which bills Medicare for the services they deliver. Of these, 3 practice at this address. They are listed nearest first.

Clinicians, nearest first (7)

Amy Awaida, M.D.
Hematology/Oncology
NPI 1336190701
835 SOUTHWESTERN RUN
Youngstown, OH 44514
(330) 318-1100
✔ PECOS✔ Accepts MedicareSame address
Sanaullah Khalid, M.D.
Hematology/Oncology
NPI 1811285562
835 SOUTHWESTERN RUN
Youngstown, OH 44514
(330) 318-1100
✔ PECOS✔ Accepts MedicareSame address
Christina Melewski, APRN
Nurse Practitioner
NPI 1659148211
835 SOUTHWESTERN RUN
Youngstown, OH 44514
(330) 318-1100
✔ PECOS✔ Accepts MedicareSame address
Roger Hakimian, M.D.
Hematology/Oncology
NPI 1467487397
1745 NILES CORTLAND RD NE STE 5
Warren, OH 44484
(330) 856-8600
✔ PECOS✔ Accepts Medicare19 mi
Lori Hemrock, M.D.
Hematology/Oncology
NPI 1073517835
1745 NILES CORTLAND RD NE STE 5
Warren, OH 44484
(330) 856-8600
✔ PECOS✔ Accepts Medicare19 mi
Brittany Mazejko
Nurse Practitioner
NPI 1518514926
1745 NILES CORTLAND RD NE
Warren, OH 44484
(330) 856-8600
✔ PECOS✔ Accepts Medicare19 mi
Elizabeth Reeves-Ciminelli, FNP-BC
Nurse Practitioner
NPI 1538765243
6681 RIDGE RD STE 300
Parma, OH 44129
(440) 842-8675
✔ PECOS✔ Accepts Medicare63 mi

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 Mahoning Valley Hematology Oncology Assoc. Inc.'s NPI number?

The NPI number for Mahoning Valley Hematology Oncology Assoc. Inc. is 1215979588. It was assigned to this organization in the NPPES registry on June 12, 2006.

Where is Mahoning Valley Hematology Oncology Assoc. Inc. located?

Mahoning Valley Hematology Oncology Assoc. Inc. is located at 835 Southwestern Run, Youngstown, OH 44514. The listed phone number is (330) 318-1100.

What is Mahoning Valley Hematology Oncology Assoc. Inc.'s specialty?

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

Is Mahoning Valley Hematology Oncology Assoc. Inc. enrolled in Medicare?

Yes. Mahoning Valley Hematology Oncology Assoc. Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mahoning Valley Hematology Oncology Assoc. Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 2 Medicare specialties reassign their Medicare billing to Mahoning Valley Hematology Oncology Assoc. Inc.. 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 (4) and Nurse Practitioner (3). Of these, 3 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Mahoning Valley Hematology Oncology Assoc. Inc. accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 32 other insurers list Mahoning Valley Hematology Oncology Assoc. Inc. 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 Mahoning Valley Hematology Oncology Assoc. Inc. was last updated on November 15, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.