Dr Geoffrey P Colby, MD, PHD in Los Angeles, CA

Dr Geoffrey P Colby, MD, PHD is a medicare enrolled "Neurological Surgery" physician in Los Angeles, California. He went to Columbia University College Of Physicians And Surgeons and graduated in 2006 and has 19 years of diverse experience with area of expertise as Neurosurgery. He is a member of the group practice The Regents Of The University Of California, Tucson Physician Group Holdings Llc and his current practice location is 300 Medical Plaza, Los Angeles, California. You can reach out to his office (for appointments etc.) via phone at (310) 825-5111.

Dr Geoffrey P Colby is licensed to practice in California (license number A149100) 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 1144373739.

Contact Information

	Dr Geoffrey P Colby, MD, PHD
	300 Medical Plaza, Los Angeles, CA 90095-0001
	(310) 825-5111
	(310) 825-7245

Map and Direction

Physician's Profile

Full Name	Dr Geoffrey P Colby
Gender	Male
Speciality	Neurosurgery
Experience	19 Years
Location	300 Medical Plaza, Los Angeles, 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 Geoffrey P Colby attended and graduated from Columbia University College Of Physicians And Surgeons in 2006

NPI Data:

NPI Number: 1144373739
Provider Enumeration Date: 01/19/2007
Last Update Date: 06/27/2025

Medicare PECOS Information:

PECOS PAC ID: 9537310933
Enrollment ID: I20170810001843

Medical Identifiers

Medical identifiers for Dr Geoffrey P Colby such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1144373739	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207T00000X	Neurological Surgery	74356 (Arizona)	Secondary
207T00000X	Neurological Surgery	A149100 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Ronald Reagan Ucla Medical Center	Los angeles, CA	Hospital
St Joseph's Hospital	Tucson, AZ	Hospital
Santa Monica - Ucla Med Ctr & Orthopaedic Hospital	Santa monica, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
The Regents Of The University Of California	1355249491	44
Tucson Physician Group Holdings Llc	0547560070	187

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 Geoffrey P Colby allows following entities to bill medicare on his behalf.

Entity Name	Ucla Radiology Medical Group
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1881670248 PECOS PAC ID: 8921902065 Enrollment ID: O20031120001026

Entity Name	The Regents Of The University Of California
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1538125844 PECOS PAC ID: 1355249491 Enrollment ID: O20031226000291

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 Geoffrey P Colby 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 Geoffrey P Colby, MD, PHD Po Box 22224, Belfast, ME 04915-4473 Ph: (884) 027-2568	Dr Geoffrey P Colby, MD, PHD 300 Medical Plaza, Los Angeles, CA 90095-0001 Ph: (310) 825-5111

Reviews and Comments

Neurological Surgery Doctors in Los Angeles, CA

Dr. Eisha Anne Christian, MD Neurological Surgery Medicare: Medicare Enrolled Practice Location: 1200 N State St, Suite 3300, Los Angeles, CA 90089 Phone: 323-226-7421 Fax: 323-226-7833
Ben Strickland, MD Neurological Surgery Medicare: Accepting Medicare Assignments Practice Location: 1200 N State Street, Suite 3300, Los Angeles, CA 90033 Phone: 803-312-4871 Fax: 323-226-7421
Dr. Tiffany Grace Perry, M.D. Neurological Surgery Medicare: Accepting Medicare Assignments Practice Location: 127 S San Vicente Blvd Ste A6600, Los Angeles, CA 90048 Phone: 310-423-7900 Fax: 310-423-9124
Jonathan Sisti, MD Neurological Surgery Medicare: May Accept Medicare Assignments Practice Location: 1520 San Pablo St Ste 3800, Los Angeles, CA 90033 Phone: 323-442-5720
Dr. Julian Antony Mattiello, M.D., PH.D. Neurological Surgery Medicare: Not Enrolled in Medicare Practice Location: 8635 W 3rd St, Suite 1080 West, Los Angeles, CA 90048 Phone: 310-423-9900
Dr. Vivek Mehta, MD Neurological Surgery Medicare: Accepting Medicare Assignments Practice Location: 1200 N State St, Suite 3300, Los Angeles, CA 90033 Phone: 323-226-7421
Dr. John Yu, M.D. Neurological Surgery Medicare: Accepting Medicare Assignments Practice Location: 8700 Beverly Blvd., Los Angeles, CA 90048 Phone: 310-423-7900 Fax: 310-423-0777

Dr Geoffrey P Colby, MD, PHD - Medicare Neurosurgery in Los Angeles, CA