Cassandra Leigh Thomas, MD in Ventura, CA - Medicare Internal Medicine

Cassandra Leigh Thomas, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Ventura, California. She graduated from medical school in 2009 and has 16 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice County Of Ventura and her current practice location is 300 Hillmont Ave Ste 501, Ventura, California. You can reach out to her office (for appointments etc.) via phone at (805) 652-6218.

Cassandra Leigh Thomas is licensed to practice in California (license number C184675) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1376787416.

Contact Information

	Cassandra Leigh Thomas, MD
	300 Hillmont Ave Ste 501, Ventura, CA 93003-1651
	(805) 652-6218
	Not Available

Map and Direction

Physician's Profile

Full Name	Cassandra Leigh Thomas
Gender	Female
Speciality	Internal Medicine
Experience	16 Years
Location	300 Hillmont Ave Ste 501, Ventura, California
Accepts Medicare Assignments	Yes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Cassandra Leigh Thomas graduated from medical school in 2009

NPI Data:

NPI Number: 1376787416
Provider Enumeration Date: 04/20/2009
Last Update Date: 11/17/2025

Medicare PECOS Information:

PECOS PAC ID: 2466608542
Enrollment ID: I20240408000130

Medical Identifiers

Medical identifiers for Cassandra Leigh Thomas such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1376787416	NPI	-	NPPES
102756150	Medicaid	PA
0311057	Medicaid	NJ

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207RH0003X	Internal Medicine - Hematology & Oncology	C184675 (California)	Primary
207R00000X	Internal Medicine	MD446164 (Pennsylvania)	Secondary
207RX0202X	Internal Medicine - Medical Oncology	25MA10384800 (New Jersey)	Secondary
390200000X	Student In An Organized Health Care Education/training Program	(* (Not Available))	Secondary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Ventura County Medical Center	Ventura, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
County Of Ventura	7911810171	250

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Cassandra Leigh Thomas allows following entities to bill medicare on her behalf.

Entity Name	County Of Ventura
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1629167457 PECOS PAC ID: 7911810171 Enrollment ID: O20031112000587

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Cassandra Leigh Thomas is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing Address	Practice Location Address
Cassandra Leigh Thomas, MD 300 Hillmont Ave Ste 501, Ventura, CA 93003-1651 Ph: (805) 652-6218	Cassandra Leigh Thomas, MD 300 Hillmont Ave Ste 501, Ventura, CA 93003-1651 Ph: (805) 652-6218

Reviews and Comments

Internal Medicine Doctors in Ventura, CA

Dr. Cory Michael Lee Nitzel, M.D. Hematology & Oncology Medicare: Accepting Medicare Assignments Practice Location: 300 Hillmont Ave Ste 503, Ventura, CA 93003 Phone: 805-652-5787
James Tynan Daly, DO Hematology & Oncology Medicare: Medicare Enrolled Practice Location: 147 N Brent St, Ventura, CA 93003 Phone: 805-948-5672
Dr. Vimal Vermani, M.D. Hematology & Oncology Medicare: Accepting Medicare Assignments Practice Location: 300 Hillmont Ave Ste 401, Ventura, CA 93003 Phone: 805-648-9830
Dr. Jeffrey C Brackett, MD Hematology & Oncology Medicare: Accepting Medicare Assignments Practice Location: 100 N Brent St Ste 301, Ventura, CA 93003 Phone: 085-653-0101
Dr. Alexander Jehlar Jr., M.D. Hematology & Oncology Medicare: Accepting Medicare Assignments Practice Location: 5855 Olivas Park Dr, Ventura, CA 93003 Phone: 805-667-2801
Martha Gonzalez, M.D., M.P.H Hematology & Oncology Medicare: May Accept Medicare Assignments Practice Location: 116 N. Brent Street, Ventura, CA 93003 Phone: 805-656-4311 Fax: 805-643-5020
Dr. Stephanus R Philip, MD Hematology & Oncology Medicare: Accepting Medicare Assignments Practice Location: 3291 Loma Vista Rd, Ventura, CA 93003 Phone: 805-652-6075 Fax: 805-652-6286

Cassandra Leigh Thomas, MD - Medicare Internal Medicine in Ventura, CA