How many Hematology & Oncology private practices are in Arizona?

There are 398 physician-owned hematology & oncology private practices in Arizona, verified against the NPPES NPI Registry. All are independently operated. Hospital-employed, government, corporate, and academic positions are excluded.

How does the buy-and-bill chemotherapy model work in private oncology practices in Arizona?

In the buy-and-bill model, the oncology practice purchases chemotherapy drugs from a distributor (often through a Group Purchasing Organization for better pricing) and then bills payers for drug administration at the payer's contracted rate. Under Medicare Part B, reimbursement is typically at ASP (average sales price) + 6%. The spread between acquisition cost and reimbursement rate is the drug margin. Practices with favorable GPO contracts and a high commercial payer mix generate substantial drug margin revenue that does not exist in hospital-employed oncology.

What entity type do Hematology & Oncology private practices in Arizona use?

Most Hematology & Oncology private practices in Arizona are structured as PC, PLLC entities. The choice depends on state law, tax strategy, and liability preferences. A healthcare attorney can advise on the right structure.

What is a physician-owned Hematology & Oncology practice?

A physician-owned Hematology & Oncology practice is one where licensed physicians hold controlling ownership. This distinguishes it from hospital-employed positions, corporate medical groups, or practices backed by private equity, where non-physician entities own or control the business.

What does NPPES Verified mean?

NPPES stands for the National Plan and Provider Enumeration System, a federal database maintained by CMS. Every practice in this directory has an active NPI (National Provider Identifier) record in NPPES, which confirms it is a registered medical practice in the United States.

What does the Corporate-Acquired or MSO-Affiliated flag mean?

The Corporate-Acquired flag indicates the practice was historically physician-owned but has since been acquired by a corporate entity such as Optum or UnitedHealth Group. The MSO-Affiliated flag indicates the practice participates in a Management Services Organization, which provides administrative infrastructure while physicians retain ownership at the practice level. These flags help physicians understand the ownership structure before reaching out.

How do I join a Hematology & Oncology private practice in Arizona?

Start by contacting the practice directly using the website or phone number listed in this directory. Before negotiating any offer, have a physician contract attorney licensed in Arizona review the employment agreement, particularly non-compete clauses, compensation structure, and buy-in terms for partnership-track positions.

Private Practice Directory Arizona Oncology

Elisa Tso Bomgaars, MD

Anthem, AZ

NPPES Verified

OncologistCancer Treatment CenterHematologist

Dr. Elisa Tso Bomgaars is a board-certified Medical Oncologist and joined Ironwood Cancer & Research Centers in October 2013. She specializes in Lung, Head & Neck malignancies, Myeloma & Lymphoma and hematologic disorders. She graduated with honors from an accelerated program through the University of the Philippines, College of Medicine, which allowed her to finish medical school two years earlier than normal. She completed both internal medicine residency and hematology-oncology fellowship tra

3624 W Anthem Way suite C-100, Anthem, AZ 85086

	Physician-Owned	Hospital-Employed	Corporate / PE-Backed
Who controls the practice	Physicians	Health system	Non-physician entity
Non-compete scope	Narrower, negotiable	Broad	Very broad
Partnership / buy-in path	Common	Rare	Rare
Call schedule flexibility	Higher	Variable	Lower
Productivity bonus upside	High	Moderate	Moderate
Included in this directory	Yes	No	Flagged

Arizona Hematology & Oncology Practices, Vetted and Independent

All 398 physician-owned hematology & oncology practices in Arizona, by city

Elisa Tso Bomgaars, MD

Ironwood Cancer & Research Centers

Sanjeev Gopal, MD

HonorHealth Cancer Care - Comprehensive Breast Center of Arizona - Avondale

Center for Integrative Healing & Wellness

Alliance Cancer Care Arizona at Casa Grande

Cancer & Blood Specialists of Arizona

Cancer Treatment Services of Arizona

Carlos Arce-Lara, MD

Ian B. DeRoock, MD

Ironwood Cancer & Research Centers

Ronak Shah, MD

Samrat Sanghvi, MD

Aalok K. Sahai, MD

Alice Tsai, MD

Anita Koszyk-Szewczyk, MD

Anu Batra, MD

Azam J. Farooqui, MD

Chad Cherington, MD

Charles Woo, MD

Christopher M. Kellogg, MD

Dr. Rohit Sud, MD

Edgar Hernandez, MD, MS, FACS

Eric T. Gross, MD

Heidi Rula, MD

Ironwood Cancer & Research Centers

Ironwood Women's Center in Chandler

Jennifer M Havens, ND

Karen Ortiz Cruz, MD

Laura Champagne, MD, FACS

Mario Javier Pineda, MD, PhD

Mikhail I. Shtivelband, MD, PhD

Parvinderjit Khanuja, MD, FACP

Prostate Cancer Institute of America

Puneet Bhalla, MD

Ramesh Ramanathan, MD

Rohit K. Sahai, MD

Sujith R Kalmadi, MD

Arizona Oncology - Flagstaff Medical Oncology and Hematology

Breast Care Clinic at Northern Arizona Healthcare

Cancer & Blood Specialists of Arizona

Deborah Lindquist, MD

Matthew Greer, MD

Medical Oncology at Northern Arizona Healthcare

Paul Kuefler, MD

Peter Mathern, MD

Radiation Oncology at Northern Arizona Healthcare

Sarah Conlon, MD

Stephanie Rice, MD

Anita Koszyk-Szewczyk, MD

Arizona Center for Cancer Care

Arun Kushalraj Singavi

Arvind Bakhru, MD, MPH Gynecologist Oncologist Mesa

Cancer & Blood Specialists of Arizona

Christopher Chen, M.D., M.B.A. | Medical Oncologist

Cory Heal, MD

Davis A. Romney, MD

Edgar Hernandez, MD, MS, FACS

Emily Ho, MD, MS, FACS

Eric T. Gross, MD

Gregory A. Maggass, MD

Harshita Paripati, MD

Ian B. DeRoock, MD

Ironwood Cancer & Research Center

Ironwood Women's Center in Gilbert

Kalyan Mantripragada, MD

Katarzyna Trebska, MD, FACS

Mario Javier Pineda, MD, PhD

Michael A. Garcia, MD, MS

Neel K. Dharia, MD

Palo Verde Cancer Specialists

Patrick Blackburn, MD, FACOG

Puneet Bhalla, MD

Robert Galamaga, DO | Medical Oncologist

Sara Zakem, MD

Scott Tannehill, MD

Sumeet K. Mendonca, MD

Affiliated Urologists - Glendale