Dr Ernesto Casillas Jr, MD in San Francisco, CA

Dr Ernesto Casillas Jr, MD is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in San Francisco, California. His current practice location is 513 Parnassus Ave # 111, San Francisco, California. You can reach out to his office (for appointments etc.) via phone at (415) 476-1000.

Dr Ernesto Casillas Jr is licensed to practice in California (license number A157855) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1952832354.

Contact Information

	Dr Ernesto Casillas Jr, MD
	513 Parnassus Ave # 111, San Francisco, CA 94143-2205
	(415) 476-1000
	Not Available

Map and Direction

Physician's Profile

Full Name	Dr Ernesto Casillas Jr
Gender	Male
Speciality	Internal Medicine - Pulmonary Disease
Location	513 Parnassus Ave # 111, San Francisco, California
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1952832354
Provider Enumeration Date: 03/27/2017
Last Update Date: 09/04/2024

Medicare PECOS Information:

PECOS PAC ID: 7810249364
Enrollment ID: I20230623002175

Medical Identifiers

Medical identifiers for Dr Ernesto Casillas Jr such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1952832354	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	A157855 (California)	Secondary
207RC0200X	Internal Medicine - Critical Care Medicine	A157855 (California)	Secondary
207RP1001X	Internal Medicine - Pulmonary Disease	A157855 (California)	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. Dr Ernesto Casillas Jr allows following entities to bill medicare on his behalf.

Entity Name	Massachusetts General Physicians Organization Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1801874573 PECOS PAC ID: 2466365820 Enrollment ID: O20031111000434

Entity Name	The General Hospital Corporation
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1023049236 PECOS PAC ID: 6507803806 Enrollment ID: O20080313000351

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. Dr Ernesto Casillas Jr 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
Dr Ernesto Casillas Jr, MD 513 Parnassus Ave # 111, San Francisco, CA 94143-2205 Ph: (415) 476-1000	Dr Ernesto Casillas Jr, MD 513 Parnassus Ave # 111, San Francisco, CA 94143-2205 Ph: (415) 476-1000

Reviews and Comments

Internal Medicine Doctors in San Francisco, CA

Dr. Shannon Walker, Pulmonary Disease Medicare: Medicare Enrolled Practice Location: 112 Parnassus Ave Apt 4, San Francisco, CA 94117 Phone: 571-271-8343
Dr. Pratyusha Kishore Narra, MBBS Pulmonary Disease Medicare: Accepting Medicare Assignments Practice Location: 3490 California St, San Francisco, CA 94118 Phone: 415-514-6200 Fax: 415-514-6410
Dr. Chelsea Joy Thomsen, M.D., M.S.P.H Pulmonary Disease Medicare: Accepting Medicare Assignments Practice Location: 2 W Portal Ave, San Francisco, CA 94127 Phone: 415-291-0480
Christine Soran, Pulmonary Disease Medicare: Medicare Enrolled Practice Location: 1001 Potrero Ave, Bldg 10, 3rd Floor, Ward 13, Ucsf Division Of General Internal Medicine Sfgh, San Francisco, CA 94110 Phone: 415-206-5164 Fax: 415-206-5586
Stephen Norris Cohen, MD Pulmonary Disease Medicare: Not Enrolled in Medicare Practice Location: 40 Ventura Ave, San Francisco, CA 94116 Phone: 415-681-2171 Fax: 415-681-2171
Mauricio Jalife Bucay, M.D Pulmonary Disease Medicare: Accepting Medicare Assignments Practice Location: 505 Parnassus Ave, San Francisco, CA 94143 Phone: 415-750-4994 Fax: 415-750-8156
Dr. Adriana A.t. Martin, M.D., PH.D. Pulmonary Disease Medicare: Medicare Enrolled Practice Location: 505 Parnassus Ave, San Francisco, CA 94143 Phone: 415-514-7288

Dr Ernesto Casillas Jr, MD - Medicare Internal Medicine in San Francisco, CA