WILLIAM JOHNSTON M.D.
NPI 1417366584
Emergency Medicine in Palo Alto, CA

Active since August 03, 2014PECOS EnrolledAccepts Medicare Assignment
94.62/100
CMS Quality Rating
3801 MIRANDA AVE, PALO ALTO, CA 94304(650) 493-5000 Get Directions Write a Review

NPPES record last updated: August 12, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 12, 2021, Mar 17, 2018, Dec 14, 2017 (3 updates tracked since 2017).

About William Johnston M.d. NPPES

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

WILLIAM JOHNSTON M.D. (NPI 1417366584) is an individual emergency medicine provider in Palo Alto, California, licensed in California (A138944) and active in the NPI registry since August 2014. He is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1417366584
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameWILLIAM JOHNSTONCredential: M.D.
Location Address3801 MIRANDA AVEPalo Alto, CA 94304-1207
Mailing Address2015 Ray DrBurlingame, CA 94010-4655
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateAugust 3, 2014
Last NPPES UpdateAugust 12, 20213 updates tracked since enumeration
NPPES CertifiedAugust 12, 2021
NPI 1417366584 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License Licensed in CA · A138944
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
3801 MIRANDA AVE, Palo Alto, CA 94304

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

William Johnston M.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 ID9537457445
PECOS Enrollment IDI20161010000813
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 2

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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
23 services22 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94304 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
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
Most-billed visit code 99214
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.

94.62/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality76.67
Improvement Activities40
Cost97.14

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.

Pharmacist
3801 MIRANDA AVE
PALO ALTO, CA 94304
Psychologist (Clinical)
3801 MIRANDA AVE
PALO ALTO, CA 94304
Pharmacist
3801 MIRANDA AVE
PALO ALTO, CA 94304
Registered Nurse
3801 MIRANDA AVE
PALO ALTO, CA 94304
Internal Medicine
3801 MIRANDA AVE, VA PALO ALTO HEALTH CARE SYSTEM (111STC)
PALO ALTO, CA 94304
Obstetrics & Gynecology
3801 MIRANDA AVE, #112
PALO ALTO, CA 94304
Occupational Therapist
3801 MIRANDA AVE, PMRS (117)
PALO ALTO, CA 94304
Social Worker (Clinical)
3801 MIRANDA AVE, VAPAHCS SOCIAL WORK SERVICE, 122 PA
PALO ALTO, CA 94304

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 William Johnston's NPI number?

The NPI number for William Johnston is 1417366584. It was assigned to this individual provider in the NPPES registry on August 3, 2014.

Where is William Johnston located?

William Johnston practices at 3801 Miranda Ave, Palo Alto, CA 94304. The listed phone number is (650) 493-5000.

What is William Johnston's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is William Johnston enrolled in Medicare?

Yes. William Johnston 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.

When was this NPI record last updated?

The NPPES record for William Johnston was last updated on August 12, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.