John Best
Neurology Physician · San Francisco, CA
John Best is a neurology physician with a practice address in San Francisco, California, and NPI 1871955476, issued on Mar 23, 2016. Check the license (California A168313, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Best
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- A168313 CA
Self-reported in NPPES; status is on the state search - Practice location
- 450 6TH Ave FL 3, San Francisco, CA 94118
- Phone
- (415) 833-4555
- Enumerated
- Mar 23, 2016
- Record last updated
- Aug 7, 2024
- Fax
- (415) 833-3625
- Medicare enrollment
- Enrolled (PECOS I20200701001261); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 450 6TH Ave FL 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wilbur Leong, PHARMDAmbulatory Care Pharmacist1962841114
Verify John Best in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A168313Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average neurology physician in 2024
1,070 Medicare Part D claims for 223 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Donepezil Hcl211 claims
- Carbidopa-Levodopa106 claims
- Escitalopram Oxalate78 claims
- Trazodone Hcl62 claims
- Levetiracetam47 claims
- Duloxetine Hcl37 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Best among 2,339 neurology physician records in California
John Best is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 78% of them.
- NPI issued2016 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2016 · median 2006 among the 1,628 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in San Francisco → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Chau Chien, MDSan Francisco, CA 941181578503462
- Joanna Hellmuth, MD, MHSSan Francisco, CA 941181497073001
- Pressley Chakales, MDSan Francisco, CA 941171093344988
- Mary Genevieve, M.D.San Francisco, CA 941171871598706
- Sheetal Hegde, MDSan Francisco, CA 941171689203010
- William Jagust, MDSan Francisco, CA 941171265765622
- Jaehyun Kim, M.D.San Francisco, CA 941171639602618
- Donald Kitt, M.D.San Francisco, CA 941171477641090
Common questions
What is John Best's NPI number?
John Best's National Provider Identifier (NPI) is 1871955476, issued on Mar 23, 2016. An NPI identifies a provider in billing; it is not a license.
Where is John Best located?
The NPPES record lists a practice address at 450 6TH Ave FL 3, San Francisco, CA, 94118. Phone: (415) 833-4555. Providers update this record themselves, so call before visiting.
How can I verify John Best's license?
NPPES lists California license number A168313, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Best prescribe under Medicare Part D?
In 2024, John Best had 1,070 Medicare Part D claims for 223 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.