Rosemary Castoreno, MD in San Antonio, TX - Medicare Internal Medicine

Rosemary Castoreno, MD is a medicare enrolled "Internal Medicine" physician in San Antonio, Texas. Her current practice location is 2551 N Interstate 35, San Antonio, Texas. You can reach out to her office (for appointments etc.) via phone at (210) 333-0733.

Rosemary Castoreno is licensed to practice in Texas (license number M3966) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1225135957.

Contact Information

	Rosemary Castoreno, MD
	2551 N Interstate 35, San Antonio, TX 78208-1631
	(210) 333-0733
	(210) 333-0763

Map and Direction

Physician's Profile

Full Name	Rosemary Castoreno
Gender	Female
Speciality	Internal Medicine
Location	2551 N Interstate 35, San Antonio, Texas
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1225135957
Provider Enumeration Date: 09/17/2006
Last Update Date: 08/13/2025

Medicare PECOS Information:

PECOS PAC ID: 8921009697
Enrollment ID: I20070123000528

Medical Identifiers

Medical identifiers for Rosemary Castoreno such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1225135957	NPI	-	NPPES
183531602	Medicaid	TX

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	35.138061 (Ohio)	Secondary
207R00000X	Internal Medicine	C168306 (California)	Secondary
208M00000X	Hospitalist	M3966 (Texas)	Secondary
207R00000X	Internal Medicine	M3966 (Texas)	Primary

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. Rosemary Castoreno allows following entities to bill medicare on her behalf.

Entity Name	Claris Health Pllc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1356797070 PECOS PAC ID: 5496097396 Enrollment ID: O20190424002777

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. Rosemary Castoreno 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
Rosemary Castoreno, MD 4102 S New Braunfels Ave Ste 110-482, San Antonio, TX 78223-1707 Ph: (210) 333-0733	Rosemary Castoreno, MD 2551 N Interstate 35, San Antonio, TX 78208-1631 Ph: (210) 333-0733

Reviews and Comments

Internal Medicine Doctors in San Antonio, TX

Dr. Dennis Anthony Ruff, M.D. Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 8307 Gault Ln, San Antonio, TX 78209 Phone: 210-798-5112
Eduardo N. Pollono, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 4502 Medical Dr, San Antonio, TX 78229 Phone: 210-358-4000 Fax: 210-567-6960
Zarema J Singson, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 5223 Hamilton Wolfe Rd, San Antonio, TX 78229 Phone: 210-614-1234 Fax: 210-614-0952
Sapna Raghunathan, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 8300 Floyd Curl Dr, San Antonio, TX 78229 Phone: 210-450-9490 Fax: 210-450-6065
Dr. Jonathan Edward Slovik, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 4502 Medical Dr, San Antonio, TX 78229 Phone: 210-358-4000 Fax: 210-358-0647
Mr. Paul Joseph Fanucchi, NP Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: Marianist Residence, 520 Fondham, San Antonio, TX 78228 Phone: 210-434-4157 Fax: 210-433-6005
Socrates B Aramburu, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 1100 Mccullough Ave, Suite 300, San Antonio, TX 78212 Phone: 210-271-3204 Fax: 210-222-2761

Rosemary Castoreno, MD - Medicare Internal Medicine in San Antonio, TX