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Active NPI 1477929461 Individual Practitioner Male Practitioner

Mark Wesley Bustillo Co

Nurse Practitioner • Sylmar, CA

Professional Overview & Biography Verified Profile Summary

Mark Wesley Co is a registered healthcare professional specializing in Nurse Practitioner in Sylmar, CA. Practice services are available at 14445 OLIVE VIEW DR under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

14445 Olive View Dr

Sylmar, CA 913421438

Telephone 7472103000
Associated Practice Facility / Clinic
🏢 Insight Health Corp Facility NPI 1225003072

Specialty Benchmarks & Practice Insights

Comparative analytics for Nurse Practitioner in Sylmar, CA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 8.4 Yrs
State Avg: 11.7 Yrs
Regional Practice Density
32 Specialists

Practicing in Sylmar, CA (8378 Statewide)

Telehealth Adoption Rate
3.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-04-16
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

State License CA 95013538

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Registered Nurse - Psychiatric/Mental Health

NUCC Taxonomy Code: 163WP0808X

State License CA 697369

Definition to come...

Nurse Practitioner - Family

NUCC Taxonomy Code: 363LF0000X

State License CA 95013538

Definition to come...

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
Dennis Poon

Nurse Practitioner - Family

NPI 1003439365
Dr. Dahlia Amitai , PharmD

Pharmacist - Ambulatory Care

NPI 1023635919

Doctor of Pharmacy (Pharm.D.)

Dr. Carlos Rodriguez-Aponte , MD

Anesthesiology - Pediatric Anesthesiology

NPI 1033647557

Doctor of Medicine (M.D.)

Xuan Sin , OTR, L

Occupational Therapist

NPI 1033778493

Occupational Therapist Registered, L

Garrett Steadman , PMHNP-BC

Nurse Practitioner - Psychiatric/Mental Health

NPI 1043047244

Psychiatric-Mental Health Nurse Practitioner (Board Certified)

Dr. Karbi Choudhury , MD

Student in an Organized Health Care Education/Training Program

NPI 1043153067

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

12 Historical Events
📍
Updated Practice Location April 16, 2026

Registered at 14445 OLIVE VIEW DR, SYLMAR, CA 913421438 (Tel: 7472103000)

📍
Updated Business Mailing Address April 16, 2026

Registered at 14445 OLIVE VIEW DR, SYLMAR, CA 913421438 (Tel: 7472103000)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 16, 2026

Registered Nurse (License #697369 in CA)

📍
Updated Practice Location October 05, 2022

Registered at 20151 NORDHOFF ST, CHATSWORTH, CA 913116215 (Tel: 8184073200)

📍
Updated Business Mailing Address October 05, 2022

Registered at 20151 NORDHOFF ST, CHATSWORTH, CA 913116215

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 05, 2022

Nurse Practitioner (License #95013538 in CA)

NPI Profile Active August 13, 2015

NPI status registered as active in NPPES database

📍
Updated Practice Location August 13, 2015

Registered at 20854 LANARK ST, WINNETKA, CA 913062033 (Tel: 8149837800)

📍
Updated Business Mailing Address August 13, 2015

Registered at 20854 LANARK ST, WINNETKA, CA 913062033

👤
Provider Name / Credentials Updated August 13, 2015

Recorded as MARK WESLEY CO

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 13, 2015

Registered Nurse (License #697369 in CA)

🟢
Initial NPI Registration & Enumeration August 13, 2015

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1477929461
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 13, 2015
Last Update: April 16, 2026
Sole Proprietor: Yes

Mailing Address

14445 Olive View Dr

Sylmar, CA 913421438

Phone: 7472103000

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.