Dr John Stephen Hammes, MD in San Diego, CA

Dr John Stephen Hammes, MD is a medicare enrolled "Internal Medicine - Nephrology" physician in San Diego, California. He went to Uniformed Services Uhs Fe Hebert School Of Med and graduated in 1993 and has 32 years of diverse experience with area of expertise as Nephrology. He is a member of the group practice Emergency And Acute Care Medical Corporation, Balboa Nephrology Medical Group Inc and his current practice location is 4060 Fourth Ave, Suite 220, San Diego, California. You can reach out to his office (for appointments etc.) via phone at (619) 299-2350.

Dr John Stephen Hammes is licensed to practice in California (license number G84351) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1891766994.

Contact Information

	Dr John Stephen Hammes, MD
	4060 Fourth Ave, Suite 220, San Diego, CA 92103-2116
	(619) 299-2350
	(619) 297-8379

Map and Direction

Physician's Profile

Full Name	Dr John Stephen Hammes
Gender	Male
Speciality	Nephrology
Experience	32 Years
Location	4060 Fourth Ave, San Diego, California
Accepts Medicare Assignments	Yes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Dr John Stephen Hammes attended and graduated from Uniformed Services Uhs Fe Hebert School Of Med in 1993

NPI Data:

NPI Number: 1891766994
Provider Enumeration Date: 01/28/2006
Last Update Date: 01/29/2021

Medicare PECOS Information:

PECOS PAC ID: 7012166432
Enrollment ID: I20120928000492

Medical Identifiers

Medical identifiers for Dr John Stephen Hammes such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1891766994	NPI	-	NPPES
CB204086	Other	CA	SO CA MEDICARE PTAN
G84351	Other	CA	CA LICENSE
CA125550	Other	CA	NO CA MEDICARE PTAN

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207RN0300X	Internal Medicine - Nephrology	G84351 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Fmc-gateway Dialysis Center-east	San diego, CA	Dialysis facility
Fmc-balboa South Bay Home Therapies	Chula vista, CA	Dialysis facility
Scripps Mercy Hospital	San diego, CA	Hospital
Sharp Coronado Hospital And Hlthcr Ctr	Coronado, CA	Hospital
Grossmont Hospital	La mesa, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Emergency And Acute Care Medical Corporation	9537108279	394
Balboa Nephrology Medical Group Inc	9638164015	73

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 John Stephen Hammes allows following entities to bill medicare on his behalf.

Entity Name	Regents Of The University Of California
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1578672184 PECOS PAC ID: 3577476761 Enrollment ID: O20031211000464

Entity Name	Balboa Nephrology Medical Group Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1316997505 PECOS PAC ID: 9638164015 Enrollment ID: O20040415001031

Entity Name	Emergency And Acute Care Medical Corporation
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1437103942 PECOS PAC ID: 9537108279 Enrollment ID: O20050502000734

Entity Name	On Call Specialists Medical Group Of San Diego Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1962175836 PECOS PAC ID: 7911395231 Enrollment ID: O20211019001466

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 John Stephen Hammes 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 John Stephen Hammes, MD 4225 Executive Sq Ste 450, La Jolla, CA 92037-8411 Ph: (858) 810-0000	Dr John Stephen Hammes, MD 4060 Fourth Ave, Suite 220, San Diego, CA 92103-2116 Ph: (619) 299-2350

Reviews and Comments

Internal Medicine Doctors in San Diego, CA

Dr. Ramin Motarjemi, M.D. Nephrology Medicare: Accepting Medicare Assignments Practice Location: 200 W Arbor Dr, San Diego, CA 92103 Phone: 858-249-2500 Fax: 858-657-8069
Dr. Shweta Warner, M.D. Nephrology Medicare: Accepting Medicare Assignments Practice Location: 4647 Zion Ave, San Diego, CA 92120 Phone: 619-221-6258 Fax: 619-221-6012
Dr. Matthew James Roosevelt, M.D. Nephrology Medicare: Accepting Medicare Assignments Practice Location: 4647 Zion Ave, Department Of Hospital Medicine, San Diego, CA 92120 Phone: 619-952-5091
Marin Nishimura-kaminski, Nephrology Medicare: Accepting Medicare Assignments Practice Location: 200 W Arbor Dr, San Diego, CA 92103 Phone: 800-926-8273 Fax: 888-539-8781
Belicia Kuang-chieh Ding, MD Nephrology Medicare: Medicare Enrolled Practice Location: 200 W Arbor Dr, San Diego, CA 92103 Phone: 800-926-8273 Fax: 888-539-8781
Jedidiah Daniel Bell, Nephrology Medicare: Medicare Enrolled Practice Location: 200 W Arbor Dr, San Diego, CA 92103 Phone: 619-471-0434
Dr. Umber Dube, MD PHD Nephrology Medicare: Accepting Medicare Assignments Practice Location: 200 W Arbor Dr, San Diego, CA 92103 Phone: 800-926-8273 Fax: 888-539-8781

Dr John Stephen Hammes, MD - Medicare Nephrology in San Diego, CA