How many Hematology & Oncology private practices are in California?

There are 779 physician-owned hematology & oncology private practices in California, 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 California?

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 California use?

Most Hematology & Oncology private practices in California are structured as PC 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 California?

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 California review the employment agreement, particularly non-compete clauses, compensation structure, and buy-in terms for partnership-track positions.

Private Practice Directory California Oncology

The Oncology Institute

Alhambra

NPPES Verified

Cancer Treatment CenterCancer Treatment Center

Founded in 2007, The Oncology Institute of Hope and Innovation (TOI) is advancing oncology by delivering highly specialized, value-based cancer care in the community setting.

1411 S Garfield Ave Suite 306, Alhambra, CA 91801

	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

Physician-Owned Hematology & Oncology Practices in California

All 779 physician-owned hematology & oncology practices in California, by city

The Oncology Institute

Thomas Francis Reynolds, MD

Cancer Research Collaboration

Dr. Jayaram Bharadwaj, MD

Dr. Sayana Shah

GenesisCare

The Oncology Institute of Hope and Innovation

Bimal J. Patel, MD

Epic Care

City of Hope Arcadia Radiation Oncology

Dr. David E. Linstadt, MD

Bakersfield Hematology Oncology

Oncology Research Institute (ORI)

Christine Chung, MD

Golden Gate Urology Berkeley

James Rembert, MD

Medical Oncology-Sutter East Bay Medical Foundation-Herrick Campus

Sravana Chennupati, MD

Susan Y. Kao, M.D.

Sutter East Bay Medical Foundation- Oncology and Hematology

Dennis R. Holmes, MD

James Lloyd Meltzer, MD

Kamalesh Kumar Sankhala, MD

Leland M Green, MD

Marina Vaysburd, MD

Monica El-Masry, MD

Nu T. Lu, MD

Premier Women's Imaging

Radiation Oncology

Robert W. Decker, MD

Samuel Abba Berkman, MD

Travis B. Kidner, MD

Williams Cancer Institute

Zuri A. Murrell, MD Colon & Rectal Surgery

Elizabeth Odumakinde, MD

Epic Care

Sang-Hoon Ahn MD

Los Angeles Cancer Network

Paul L. Menzel, M.D.

The Oncology Institute

Dr. Nader Javadi, MD

Chirag Dalsania MD

Dr. Timothy A. O'Connor, M.D

Yates Todd J DO

Marshall Specialty Care

Ankit Agarwal, MD

Bay Area Gynecology Oncology

John Shumway, MD

Rizwan D Nurani, MD

Shahil Mehta, MD

South Bay Oncology Hematology: Chen May C MD

Babak Rajabi, MD

Ellen Wiegner, MD

John Kailath, MD

Navneet Virk, MD

Epic Care

Sheena Sahota, MD

Uma Swamy, MD

The Oncology Institute

RAMESH KUMAR MOOLANI

San Diego Oncology

The Oncology Institute

Community Medical Oncology Specialists

Community Radiation Oncology Specialists

M2 Oncology

Michael Moffett, M.D.

Nhat-Long Pham MD, PhD - Community Radiation Oncology Specialists

Trung "Tim" Nguyen, DO, MBA

Krupitskaya Yelena, MD

Lesley Martin, MD

Susan Kao, MD

Advanced Dermatology & Skin Cancer Specialists Corona

SRB Massage (Soothing & Relaxing Body Massage)

The Oncology Institute

ION | Integrated Oncology Network, LLC

CSSIFM Costa Mesa

Karen Todd Lane, MD

The Oncology Institute - Radiation Oncology