DR. GEOFFREY P. COLBY M.D., PH.D.
NPI 1144373739
Neurological Surgery in Los Angeles, CA

Active since January 19, 2007PECOS EnrolledAccepts Medicare Assignment
72.19/100
CMS Quality Rating
300 MEDICAL PLAZA, LOS ANGELES, CA 90095(310) 825-5111(310) 825-7245 Get Directions Write a Review

NPPES record last updated: June 27, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 27, 2025, Jan 10, 2025, Dec 11, 2019 and 2 more (5 updates tracked since 2017).

About Dr. Geoffrey P. Colby M.d., Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GEOFFREY P. COLBY M.D., PH.D. (NPI 1144373739) is an individual neurological surgery provider in Los Angeles, California, licensed in California (A149100) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Columbia University College Of Physicians And Surgeons (2006).

NPPES Registry Identity

NPI1144373739
Entity TypeIndividualMale
Primary Taxonomy207T00000X
Provider Legal NameDR. GEOFFREY P. COLBYCredential: M.D., PH.D.
Location Address300 MEDICAL PLAZALos Angeles, CA 90095-0001
Mailing AddressPo Box 22224Belfast, ME 04915-4473 · (884) 027-2568 · Fax (888) 902-1099
Fax(310) 825-7245
Sole ProprietorYes
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 2006
Enumeration DateJanuary 19, 2007
Last NPPES UpdateJune 27, 20255 updates tracked since enumeration
NPPES CertifiedJune 27, 2025
NPI 1144373739 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
Licenses Licensed in CA · A149100 Licensed in AZ · 74356
Definition
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
300 MEDICAL PLAZA, Los Angeles, CA 90095

Secondary Practice Locations 3

Location 127235 Tourney Rd Ste 2500Valencia, CA 91355-5908 · Phone (310) 825-5111 · Fax (310) 825-7245
Location 2757 Westwood PlzLos Angeles, CA 90095-0001 · Phone (310) 301-6800 · Fax (310) 794-9035
Location 36567 E Carondelet Dr Ste 305Tucson, AZ 85710-6160 · Phone (520) 881-8400

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Geoffrey P. Colby M.d., Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9537310933
PECOS Enrollment IDI20170810001843, I20241230002301
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 13

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
115 services91 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
45 services35 patients
Ultrasonic guidance for blood vessel access 76937
Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.
34 services24 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
32 services32 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
30 services29 patients
Imaging of blood vessel 75898
Imaging of blood vessels, also known as vascular imaging, is a non-invasive procedure that allows doctors to view the condition of your blood vessels. It employs techniques like ultrasound, CT scan, or MRI to capture images, enabling the detection of blockages or abnormalities.
28 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90095 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

72.19/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality64.76
Promoting Interoperability100
Improvement Activities40
Cost36.63

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Psychiatry & Neurology (Neurology)
300 MEDICAL PLAZA, #B200
LOS ANGELES, CA 90095
Psychiatry & Neurology (Neurology)
300 MEDICAL PLAZA, #B200
LOS ANGELES, CA 90095
Psychiatry & Neurology (Neurology)
300 MEDICAL PLAZA, #B200
LOS ANGELES, CA 90095
Psychologist (Clinical)
300 MEDICAL PLAZA
LOS ANGELES, CA 90095
Psychiatry & Neurology (Neurology)
300 MEDICAL PLAZA, SUITE B200
LOS ANGELES, CA 90095
Psychiatry & Neurology (Neurology)
300 MEDICAL PLAZA, #B200
LOS ANGELES, CA 90095
Psychiatry & Neurology (Neurology)
300 MEDICAL PLAZA, #B200
LOS ANGELES, CA 90095
Psychiatry & Neurology (Neurology)
300 MEDICAL PLAZA, #B200
LOS ANGELES, CA 90095

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Geoffrey Colby's NPI number?

The NPI number for Geoffrey Colby is 1144373739. It was assigned to this individual provider in the NPPES registry on January 19, 2007.

Where is Geoffrey Colby located?

Geoffrey Colby practices at 300 Medical Plaza, Los Angeles, CA 90095. The listed phone number is (310) 825-5111.

What is Geoffrey Colby's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Geoffrey Colby enrolled in Medicare?

Yes. Geoffrey Colby is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Geoffrey Colby accept?

Health plans from Ambetter from Arizona Complete Health, Antidote Health Plan of Arizona, Inc., Blue Cross Blue Shield of Arizona, Imperial Insurance Companies, Inc. and Oscar Health Plan, Inc. list Geoffrey Colby as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Geoffrey Colby was last updated on June 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.