William Johnston, MD - Medicare Emergency Medicine in Palo Alto, CA

William Johnston, MD is a medicare enrolled "Emergency Medicine" physician in Palo Alto, California. He graduated from medical school in 2013 and has 11 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Cep America - California and his current practice location is 3801 Miranda Ave, Palo Alto, California. You can reach out to his office (for appointments etc.) via phone at (650) 493-5000.

William Johnston is licensed to practice in California (license number A138944) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1417366584.

Contact Information

William Johnston, MD
3801 Miranda Ave,
Palo Alto, CA 94304-1207
(650) 493-5000
Not Available

Map and Direction




Physician's Profile

Full NameWilliam Johnston
GenderMale
SpecialityEmergency Medicine
Experience11 Years
Location3801 Miranda Ave, Palo Alto, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • William Johnston graduated from medical school in 2013
  NPI Data:
  • NPI Number: 1417366584
  • Provider Enumeration Date: 08/03/2014
  • Last Update Date: 08/12/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 9537457445
  • Enrollment ID: I20161010000813

Medical Identifiers

Medical identifiers for William Johnston such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1417366584NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A138944 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
San Mateo Medical CenterSan mateo, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Cep America - California6103739131954

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. William Johnston allows following entities to bill medicare on his behalf.
Entity NameCep America - California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023063542
PECOS PAC ID: 6103739131
Enrollment ID: O20031106000520

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. William Johnston is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
William Johnston, MD
2015 Ray Dr,
Burlingame, CA 94010-4655

Ph: () -
William Johnston, MD
3801 Miranda Ave,
Palo Alto, CA 94304-1207

Ph: (650) 493-5000

Reviews and Comments


Emergency Medicine Doctors in Palo Alto, CA

John Tate Higgins, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 900 Welch Rd Ste 350, Palo Alto, CA 94304
Phone: 650-723-6576    
Tonia R Fox, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 3801 Miranda Ave, Mail Code 111er, Palo Alto, CA 94304
Phone: 650-493-5000    
Erin Joyce Liang, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 300 Pasteur Dr, Palo Alto, CA 94304
Phone: 650-723-5111    
Dr. Robert Lee Norris Jr., M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 701 Welch Rd, Suite C, Palo Alto, CA 94304
Phone: 650-725-9445    Fax: 650-723-0121
Leigh Durlacher, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 795 El Camino Real, Palo Alto, CA 94301
Phone: 650-853-2958    
Dr. Kelly Patrick Murphy, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 701 Welch Rd, Suite C, Palo Alto, CA 94304
Phone: 650-723-7337    
Nathan Hornbostel, EMT
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 3929 Nelson Dr, Palo Alto, CA 94306
Phone: 315-746-1474    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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