Nelson Hwynn, DO
Neurology Physician · La Jolla, CA
Nelson Hwynn, DO is a neurology physician with a practice address in La Jolla, California, and NPI 1699814632, issued on Feb 6, 2007. Check the license (California 20A10667, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nelson Hwynn
- Credential
- DO
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 20A10667 CA
12-2006 NM
Self-reported in NPPES; status is on the state search - Practice location
- 10666 N Torrey Pines RD, La Jolla, CA 92037
- Phone
- (858) 554-8895
- Enumerated
- Feb 6, 2007
- Record last updated
- Nov 8, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100914000185); accepts Medicare assignment
- 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 10666 N Torrey Pines RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nelson Hwynn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A10667Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average neurology physician in 2024
2,183 Medicare Part D claims for 362 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Carbidopa-Levodopa315 claims
- Gabapentin224 claims
- Rytary195 claims
- Donepezil Hcl175 claims
- Clonazepam123 claims
- Primidone87 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.
Industry payments in 2024: $6,854.56
251 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Scripps HealthLa Jolla, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nelson Hwynn among 2,339 neurology physician records in California
Nelson Hwynn, DO 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 48% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2003 · median 2006 among the 1,628 with a school on file
- Record last updated2019 · 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).
42 neurology physician records list a practice address in La Jolla
They are 42 of the 3,648 NPPES records with a practice address in La Jolla, and 2,339 neurology physician records in California.
All 2,339 in California → Every provider in La Jolla → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Justin Dominick, MDLa Jolla, CA 920371669497038
- Emily Engel, M.D.La Jolla, CA 920371093787038
- Adam Fleisher, M.D.La Jolla, CA 920371265490957
- Douglas Galasko, MDLa Jolla, CA 920371336197730
- Melissa Houser, M.D.La Jolla, CA 920371356329536
- Christy Jackson, M.D.La Jolla, CA 920371619992286
- Mary Kalafut, M.D.La Jolla, CA 920371720048663
- Fatta Nahab, MDLa Jolla, CA 920371942291729
Common questions
What is Nelson Hwynn, DO's NPI number?
Nelson Hwynn, DO's National Provider Identifier (NPI) is 1699814632, issued on Feb 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Nelson Hwynn, DO located?
The NPPES record lists a practice address at 10666 N Torrey Pines RD, La Jolla, CA, 92037. Phone: (858) 554-8895. Providers update this record themselves, so call before visiting.
How can I verify Nelson Hwynn, DO's license?
NPPES lists California license number 20A10667, 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 Nelson Hwynn, DO prescribe under Medicare Part D?
In 2024, Nelson Hwynn, DO had 2,183 Medicare Part D claims for 362 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.