John Matthew Ringman, MD
Neurology Physician · Los Angeles, CA
John Matthew Ringman, MD is a neurology physician with a practice address in Los Angeles, California, and NPI 1265451173, issued on Jul 19, 2006. Check the license (California G83793, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Matthew Ringman
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- G83793 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1520 San Pablo Street, Los Angeles, CA 90033
- Phone
- (323) 457-5710
- Enumerated
- Jul 19, 2006
- Record last updated
- Dec 3, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20031211001196); 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 1520 San Pablo Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Thomas Hicklin, MDPsychiatry Physician1548284383
Verify John Matthew Ringman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G83793Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average neurology physician in 2024
788 Medicare Part D claims for 117 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Donepezil Hcl166 claims
- Escitalopram Oxalate122 claims
- Memantine Hcl Er111 claims
- Memantine Hcl93 claims
- Quetiapine Fumarate73 claims
- Trazodone Hcl53 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: $123.68
1 payment: food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. 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
- Usc Care Medical Group IncLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Matthew Ringman among 2,339 neurology physician records in California
John Matthew Ringman, 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1993 · median 2006 among the 1,628 with a school on file
- Record last updated2020 · 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 Los Angeles → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Margaret Burnett, M.D.Los Angeles, CA 900331679500904
- Helena Chui, M.D.Los Angeles, CA 900331629001086
- Francisco Gonzalez-Scarano, MDLos Angeles, CA 900331063446722
- Jennifer Hui, M.D.Los Angeles, CA 900331730123837
- Norman Kachuck, M.D.Los Angeles, CA 900331811938525
- Mark Lew, M.D.Los Angeles, CA 900331578507505
- Patrick Lyden, M.D.Los Angeles, CA 900331215962113
- Giselle Petzinger, M.D.Los Angeles, CA 900331003857715
Common questions
What is John Matthew Ringman, MD's NPI number?
John Matthew Ringman, MD's National Provider Identifier (NPI) is 1265451173, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Matthew Ringman, MD located?
The NPPES record lists a practice address at 1520 San Pablo Street, Los Angeles, CA, 90033. Phone: (323) 457-5710. Providers update this record themselves, so call before visiting.
How can I verify John Matthew Ringman, MD's license?
NPPES lists California license number G83793, 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 Matthew Ringman, MD prescribe under Medicare Part D?
In 2024, John Matthew Ringman, MD had 788 Medicare Part D claims for 117 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.