Dr Geoffrey P Colby, MD, PHD - Medicare Neurosurgery 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 18 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 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 NameDr Geoffrey P Colby
GenderMale
SpecialityNeurosurgery
Experience18 Years
Location300 Medical Plaza, Los Angeles, California
Accepts Medicare AssignmentsYes. 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: 12/11/2019
  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.
IdentifierTypeStateIssuer
1144373739NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207T00000XNeurological Surgery A149100 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ronald Reagan Ucla Medical CenterLos angeles, CAHospital
Santa Monica - Ucla Med Ctr & Orthopaedic HospitalSanta monica, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
The Regents Of The University Of California135524949143

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 NameUcla Radiology Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881670248
PECOS PAC ID: 8921902065
Enrollment ID: O20031120001026
Entity NameThe Regents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI 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 AddressPractice Location Address
Dr Geoffrey P Colby, MD, PHD
5767 W Century Blvd Ste 400,
Los Angeles, CA 90045-5631

Ph: () -
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
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Dr. John Yu, M.D.
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Phone: 310-423-7900    Fax: 310-423-0777

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.