Dr Ythanh Duy Nguyen, MD in Rancho Cucamonga, CA

Dr Ythanh Duy Nguyen, MD is a medicare enrolled "Internal Medicine" physician in Rancho Cucamonga, California. She graduated from medical school in 2002 and has 24 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Premier Medical Group Of California and her current practice location is 8235 Rochester Ave, Rancho Cucamonga, California. You can reach out to her office (for appointments etc.) via phone at (909) 484-4900.

Dr Ythanh Duy Nguyen is licensed to practice in California (license number A84989) 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 1255391181.

Contact Information

	Dr Ythanh Duy Nguyen, MD
	8235 Rochester Ave, Rancho Cucamonga, CA 91730-0718
	(909) 484-4900
	(909) 781-2949

Map and Direction

Physician's Profile

Full Name	Dr Ythanh Duy Nguyen
Gender	Female
Speciality	Internal Medicine
Experience	24 Years
Location	8235 Rochester Ave, Rancho Cucamonga, 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:

Dr Ythanh Duy Nguyen graduated from medical school in 2002

NPI Data:

NPI Number: 1255391181
Provider Enumeration Date: 03/24/2006
Last Update Date: 12/14/2025

Medicare PECOS Information:

PECOS PAC ID: 4688603236
Enrollment ID: I20050804000570

Medical Identifiers

Medical identifiers for Dr Ythanh Duy Nguyen such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1255391181	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	A84989 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
San Antonio Regional Hospital	Upland, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Premier Medical Group Of California	4183909849	2

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 Ythanh Duy Nguyen allows following entities to bill medicare on her behalf.

Entity Name	Premier Hospitalist Group Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1619216553 PECOS PAC ID: 3971736596 Enrollment ID: O20140507000114

Entity Name	Premier Medical Group Of California
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1629523014 PECOS PAC ID: 4183909849 Enrollment ID: O20170320001134

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 Ythanh Duy Nguyen 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 Ythanh Duy Nguyen, MD 154 W Foothill Blvd Ste A, Upland, CA 91786-8702 Ph: (909) 239-6109	Dr Ythanh Duy Nguyen, MD 8235 Rochester Ave, Rancho Cucamonga, CA 91730-0718 Ph: (909) 484-4900

Reviews and Comments

Internal Medicine Doctors in Rancho Cucamonga, CA

Behnam Ebrahimi, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 12577 Naples Way, Rancho Cucamonga, CA 91739 Phone: 714-281-2993
Catherine Joy Cabugao, Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 10841 White Oak Ave Ste 107, Rancho Cucamonga, CA 91730 Phone: 909-466-8888
Muhammad Bader Hammami, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 9140 Haven Ave Ste 115, Rancho Cucamonga, CA 91730 Phone: 909-606-4860
Dr. Vatsal Haren Mody, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 10832 Laurel St Ste 101, Rancho Cucamonga, CA 91730 Phone: 909-477-3015
Hetalben Makwana, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 9190 Haven Ave Ste 102, Rancho Cucamonga, CA 91730 Phone: 909-981-0989 Fax: 909-949-6214
Tuan A Pham, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 9333 Baseline Rd, Ste. 160, Rancho Cucamonga, CA 91730 Phone: 909-941-4777 Fax: 909-941-4599
Dr. Wollelaw W Agmas, M.D Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 8263 Grove Ave Ste 201, Rancho Cucamonga, CA 91730 Phone: 909-579-0708 Fax: 909-579-0778

Dr Ythanh Duy Nguyen, MD - Medicare Internal Medicine in Rancho Cucamonga, CA