Thomas A. Nelson, MD
Neurology Physician · San Francisco, CA
Thomas A. Nelson, MD is a neurology physician with a practice address in San Francisco, California, and NPI 1376072157, issued on Jun 6, 2017. Check the license (California A159491, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas A. Nelson
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- A159491 CA
286782 MA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave FL 8, San Francisco, CA 94143
- Phone
- (415) 353-7500
- Enumerated
- Jun 6, 2017
- Record last updated
- Mar 20, 2025
- Medicare enrollment
- Enrolled (PECOS I20241003001237); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 400 Parnassus Ave FL 8
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas A. Nelson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A159491Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average neurology physician in 2024
26 Medicare Part D claims for 15 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
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
- Ucsf Medical Group Business ServicesBurlingame, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas A. Nelson among 2,339 neurology physician records in California
Thomas A. Nelson, MD 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 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2017 · median 2006 among the 1,628 with a school on file
- Record last updated2025 · 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
- Adam Boxer, M.D.San Francisco, CA 941431841231800
- Dorothee Chabas Chanezon, M.D.San Francisco, CA 941431902832645
- Anthony Chen, MDSan Francisco, CA 941431609834472
- Jacob Elkins, M.D.San Francisco, CA 941431336180298
- Adam Gazzaley, MD PH DSan Francisco, CA 941431932142205
- John Hixson, MDSan Francisco, CA 941431336130475
- Catherine Hoerth, M.D.San Francisco, CA 941431063449866
- Viktoriya Irodenko, M.D.San Francisco, CA 941431023044997
Common questions
What is Thomas A. Nelson, MD's NPI number?
Thomas A. Nelson, MD's National Provider Identifier (NPI) is 1376072157, issued on Jun 6, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Thomas A. Nelson, MD located?
The NPPES record lists a practice address at 400 Parnassus Ave FL 8, San Francisco, CA, 94143. Phone: (415) 353-7500. Providers update this record themselves, so call before visiting.
How can I verify Thomas A. Nelson, MD's license?
NPPES lists California license number A159491, 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 Thomas A. Nelson, MD prescribe under Medicare Part D?
In 2024, Thomas A. Nelson, MD had 26 Medicare Part D claims for 15 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.