Dr Theodore Robertson Pak, MD, PHD in Orange, CA

Dr Theodore Robertson Pak, MD, PHD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Orange, California. His current practice location is 101 The City Dr S, Orange, California. You can reach out to his office (for appointments etc.) via phone at (714) 456-8888.

Dr Theodore Robertson Pak is licensed to practice in Massachusetts (license number 291119) 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 1013476100.

Contact Information

	Dr Theodore Robertson Pak, MD, PHD
	101 The City Dr S, Orange, CA 92868-3201
	(714) 456-8888
	Not Available

Map and Direction

Physician's Profile

Full Name	Dr Theodore Robertson Pak
Gender	Male
Speciality	Internal Medicine - Infectious Disease
Location	101 The City Dr S, Orange, California
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1013476100
Provider Enumeration Date: 03/18/2019
Last Update Date: 08/13/2025

Medicare PECOS Information:

PECOS PAC ID: 0042549099
Enrollment ID: I20230825002019

Medical Identifiers

Medical identifiers for Dr Theodore Robertson Pak such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1013476100	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207RI0200X	Internal Medicine - Infectious Disease	291119 (Massachusetts)	Primary
207R00000X	Internal Medicine	291119 (Massachusetts)	Secondary

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 Theodore Robertson Pak 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	Mt Auburn Professional Services
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1992750996 PECOS PAC ID: 6103725031 Enrollment ID: O20040527001374

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 Theodore Robertson Pak 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 Theodore Robertson Pak, MD, PHD 101 The City Dr S, Orange, CA 92868-3201 Ph: (714) 456-8888	Dr Theodore Robertson Pak, MD, PHD 101 The City Dr S, Orange, CA 92868-3201 Ph: (714) 456-8888

Reviews and Comments

Internal Medicine Doctors in Orange, CA

Michael Cheng, DO Infectious Disease Medicare: Accepting Medicare Assignments Practice Location: 101 The City Dr S, Orange, CA 92868 Phone: 714-456-7110
Harry Nguyen, D.O. Infectious Disease Medicare: Medicare Enrolled Practice Location: 101 The City Dr S, Orange, CA 92868 Phone: 714-456-7002
Dr. Nicole Foley, M.D. Infectious Disease Medicare: Medicare Enrolled Practice Location: 200 S Manchester Ave Ste 400, Orange, CA 92868 Phone: 714-456-5153
Millie Arora, Infectious Disease Medicare: Accepting Medicare Assignments Practice Location: 101 The City Dr S, City Tower, Suite 400, Orange, CA 92868 Phone: 714-456-5691 Fax: 714-456-8874
Dr. Antonio Halais Frangieh, MD, MPH Infectious Disease Medicare: Accepting Medicare Assignments Practice Location: 101 The City Dr S, Orange, CA 92868 Phone: 714-456-7890
Mark E Wylam, M.D. Infectious Disease Medicare: Accepting Medicare Assignments Practice Location: 101 The City Dr S, Orange, CA 92868 Phone: 714-456-7890
Dr. Andy Yen-tang Lee, MD Infectious Disease Medicare: Accepting Medicare Assignments Practice Location: 101 The City Dr S, Orange, CA 92868 Phone: 714-456-7890

Dr Theodore Robertson Pak, MD, PHD - Medicare Internal Medicine in Orange, CA