Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1063865996 Individual Practitioner Male Practitioner

Robert Harlan Day , NP

Nurse Practitioner • Stanford, CA

Professional Overview & Biography Verified Profile Summary

Robert Day, NP is a registered healthcare professional specializing in Nurse Practitioner in Stanford, CA. Practice services are available at 300 PASTEUR DR under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

300 Pasteur Dr

Stanford, CA 943052200

Telephone 6507234000
Associated Practice Facility / Clinic
🏢 Stanford Hospital And Clinic Facility NPI 1285683292

Specialty Benchmarks & Practice Insights

Comparative analytics for Nurse Practitioner in Stanford, CA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 11.3 Yrs
State Avg: 11.7 Yrs
Regional Practice Density
579 Specialists

Practicing in Stanford, CA (8378 Statewide)

Telehealth Adoption Rate
46.1% 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: 2025-02-11
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

State License CA 95023125

(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.

Practice Associates & Co-Workers

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

40 Associated Practitioners
Dr. Andrew Picel , MD

Radiology - Vascular & Interventional Radiology

NPI 1003012444

Doctor of Medicine (M.D.)

Dr. Matthew Wright , MD PHD

Psychiatry & Neurology - Psychiatry

NPI 1003041559

MDPHD

Dr. Quazi Al-Tariq , MD

Radiology - Diagnostic Radiology

NPI 1003059395

Doctor of Medicine (M.D.)

Angie Murkins , NP

Nurse Practitioner

NPI 1003061508

Nurse Practitioner

Dr. Jamshid Ghajar , MD PHD

Neurological Surgery

NPI 1003094384

MDPHD

Dr. Yu Kuang Lai , MD

Internal Medicine - Critical Care Medicine

NPI 1003127846

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

18 Historical Events
📍
Updated Practice Location February 11, 2025

Registered at 300 PASTEUR DR, STANFORD, CA 943052200 (Tel: 6507234000)

📍
Updated Business Mailing Address February 11, 2025

Registered at 300 PASTEUR DR, STANFORD, CA 943052200

👤
Provider Name / Credentials Updated February 11, 2025

Recorded as ROBERT DAY, NP

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) February 11, 2025

Nurse Practitioner (License #95023125 in CA)

NPI Profile Active March 17, 2017

NPI status registered as active in NPPES database

📍
Updated Practice Location March 17, 2017

Registered at 2 PENNS WAY, SUITE 412, NEW CASTLE, DE 19720 (Tel: 3026522455)

📍
Updated Business Mailing Address March 17, 2017

Registered at 1802 W 4TH STREET, WILMINGTON, DE 19805 (Tel: 3026522455)

👤
Provider Name / Credentials Updated March 17, 2017

Recorded as ROBERT DAY, APRN

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 17, 2017

Nurse Practitioner (License #LG-0000949 in DE)

📍
Updated Practice Location March 10, 2017

Registered at 1600 ROCKLAND RD, WILMINGTON, DE 198033607 (Tel: 3026514200)

📍
Updated Business Mailing Address March 10, 2017

Registered at P.O. BOX 191, ROCKLAND, DE 197230191 (Tel: 3026514000)

👤
Provider Name / Credentials Updated March 10, 2017

Recorded as ROBERT DAY, APRN

NPI Profile Active July 26, 2016

NPI status registered as active in NPPES database

📍
Updated Practice Location July 26, 2016

Registered at 1802 W 4TH ST, WILMINGTON, DE 198053420 (Tel: 3026555822)

📍
Updated Business Mailing Address July 26, 2016

Registered at 2 PENNS WAY, SUITE 412, NEW CASTLE, DE 197202407 (Tel: 3026522455)

👤
Provider Name / Credentials Updated July 26, 2016

Recorded as ROBERT DAY, FNP-C

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 26, 2016

Nurse Practitioner (License #LG-0000949 in DE)

🟢
Initial NPI Registration & Enumeration July 15, 2016

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1063865996
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 15, 2016
Last Update: February 11, 2025
Sole Proprietor: No

Mailing Address

300 Pasteur Dr

Stanford, CA 943052200

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.