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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JOHN NICHOLAS GRIMES MD
NPI 1558943233
Radiology - Diagnostic Radiology in Stanford, CA

Active since April 22, 2021PECOS Enrolled
300 PASTEUR DR, STANFORD, CA 94305(650) 723-4000 Get Directions Write a Review

NPPES record last updated: August 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 13, 2026, Mar 7, 2023, Apr 22, 2021 (3 updates tracked since 2021).

About John Nicholas Grimes Md NPPES

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

JOHN NICHOLAS GRIMES MD (NPI 1558943233) is an individual diagnostic radiology provider in Stanford, California, licensed in California (A180964) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, maintains a secondary practice location in Stanford, and is a graduate of Vanderbilt University School Of Medicine (2021).

NPPES Registry Identity

NPI1558943233
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameJOHN NICHOLAS GRIMESCredential: MD
Location Address300 PASTEUR DRStanford, CA 94305-2200
Mailing Address300 Pasteur DrStanford, CA 94305-2200 · (650) 723-4000
Phone(650) 723-4000
Sole ProprietorNo
Medical School CMSVanderbilt University School Of MedicineGraduated 2021
Enumeration DateApril 22, 2021
Last NPPES UpdateAugust 13, 20263 updates tracked since enumeration
NPPES CertifiedAugust 13, 2026
✔ NPI 1558943233 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License✔ Licensed in CA · A180964
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
300 PASTEUR DR, Stanford, CA 94305
Open in Google Maps ↗

Secondary Practice Location 1

Location 1300 Pasteur Dr # H1330Stanford, CA 94305-2200 · Phone (650) 723-7816

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John Nicholas Grimes Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6709357742
PECOS Enrollment IDI20260610000905
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94305 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
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
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.

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.

PRISTA CHARUWORN MD
Internal Medicine (Gastroenterology)
300 PASTEUR DR, ALWAY BUILD M211, MC 5187
STANFORD, CA 94305
Santa Clara County (650) 723-6661
ANDREW CHARLES PICEL M.D
Radiology (Vascular & Interventional Radiology)
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
MATTHEW A WRIGHT M.D. PH.D.
Psychiatry & Neurology (Psychiatry)
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
DR. QUAZI ZUBAIR AL-TARIQ M.D.
Radiology (Diagnostic Radiology)
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
ANGIE DEE MURKINS NP
Nurse Practitioner
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
DR. JAMSHID GHAJAR MD PHD
Neurological Surgery
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
SARA BAKHTARY M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
300 PASTEUR DR, LANE 235
STANFORD, CA 94305
Santa Clara County (650) 723-5252
YU KUANG LAI MD
Internal Medicine (Critical Care Medicine)
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000

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 John Grimes's NPI number?

The NPI number for John Grimes is 1558943233. It was assigned to this individual provider in the NPPES registry on April 22, 2021.

Where is John Grimes located?

John Grimes practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.

What is John Grimes's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is John Grimes enrolled in Medicare?

Yes. John Grimes is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for John Grimes was last updated on August 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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.