Alexander William Threlfall, MD in Greenbrae, CA

Alexander William Threlfall, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Greenbrae, California. He graduated from medical school in 2006 and has 19 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Regents Univ Of California Ucsf and his current practice location is 250 Bon Air Rd, Greenbrae, California. You can reach out to his office (for appointments etc.) via phone at (415) 925-7618.

Alexander William Threlfall is licensed to practice in California (license number 113086) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1669538187.

Contact Information

	Alexander William Threlfall, MD
	250 Bon Air Rd, Greenbrae, CA 94904-1702
	(415) 925-7618
	Not Available

Map and Direction

Physician's Profile

Full Name	Alexander William Threlfall
Gender	Male
Speciality	Psychiatry
Experience	19 Years
Location	250 Bon Air Rd, Greenbrae, California
Accepts Medicare Assignments	May be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.

Medical Education and Training:

Alexander William Threlfall graduated from medical school in 2006

NPI Data:

NPI Number: 1669538187
Provider Enumeration Date: 12/29/2006
Last Update Date: 10/29/2025

Medicare PECOS Information:

PECOS PAC ID: 6103113857
Enrollment ID: I20241007001635

Medical Identifiers

Medical identifiers for Alexander William Threlfall such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1669538187	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
2084P0800X	Psychiatry & Neurology - Psychiatry	113086 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Marinhealth Medical Center	Greenbrae, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Regents Univ Of California Ucsf	6305160300	249

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. Alexander William Threlfall allows following entities to bill medicare on his behalf.

Entity Name	Regents Univ Of California Ucsf
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1124439807 PECOS PAC ID: 6305160300 Enrollment ID: O20150122001375

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. Alexander William Threlfall 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
Alexander William Threlfall, MD 250 Bon Air Rd, Greenbrae, CA 94904-1702 Ph: (415) 925-7618	Alexander William Threlfall, MD 250 Bon Air Rd, Greenbrae, CA 94904-1702 Ph: (415) 925-7618

Reviews and Comments

Psychiatry & Neurology Doctors in Greenbrae, CA

Dr. Stephen C Allison, M.D. Psychiatry & Neurology Medicare: Medicare Enrolled Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904 Phone: 415-925-7663 Fax: 415-925-7665
Dr. Ilkcan Cokgor, M.D. Psychiatry & Neurology Medicare: Accepting Medicare Assignments Practice Location: 1350 S Eliseo Dr, #220, Greenbrae, CA 94904 Phone: 415-925-3590 Fax: 415-925-8851
Dr. Sridhar Prathikanti, M.D. Psychiatry & Neurology Medicare: Medicare Enrolled Practice Location: 250 Bon Air Rd, Pes, Greenbrae, CA 94904 Phone: 415-473-6666
Dr. Heather Dawne Carlberg, M.D. Psychiatry & Neurology Medicare: May Accept Medicare Assignments Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904 Phone: 415-342-7939 Fax: 925-513-4376
Dr. Igor Weisz, M.D. Psychiatry & Neurology Medicare: Not Enrolled in Medicare Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904 Phone: 415-499-6835 Fax: 415-507-4113
Gurmehr Kaur, MD Psychiatry & Neurology Medicare: May Accept Medicare Assignments Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904 Phone: 415-925-7663
Jasper Werby, Psychiatry & Neurology Medicare: Accepting Medicare Assignments Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904 Phone: 415-499-6666

Alexander William Threlfall, MD - Medicare Psychiatry in Greenbrae, CA