Ronald A. Popper, M.D. F.C.C.P.
Sleep Medicine (Internal Medicine) Physician · Thousand Oaks, CA
Ronald A. Popper, M.D. F.C.C.P. is a sleep medicine (internal medicine) physician with a practice address in Thousand Oaks, California, and NPI 1336162957, issued on Jul 25, 2006. Check the license (California A35734, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald A. Popper
- Credential
- M.D. F.C.C.P.
- Primary taxonomy
- Sleep Medicine (Internal Medicine) Physician 207RS0012X
- License number
- A35734 CA
Self-reported in NPPES; status is on the state search - Practice location
- 317 S Moorpark RD, Thousand Oaks, CA 91361
- Phone
- (805) 557-9930
- Enumerated
- Jul 25, 2006
- Record last updated
- Jul 17, 2023
- Fax
- (805) 557-9940
- Medicare enrollment
- Enrolled (PECOS I20101012001221); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1979
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sleep medicine (internal medicine) physician records → All 129 in California → Look up another NPI →
Also registered at 317 S Moorpark RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sidney Iriana, MDSleep Medicine (Internal Medicine) Physician1003435017
Verify Ronald A. Popper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A35734Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% more Medicare Part D claims than the average sleep medicine (internal medicine) physician in 2024
1,059 Medicare Part D claims for 164 beneficiaries, against an average of 585 among the 852 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 25 claims were for opioids.
Most prescribed
- Gabapentin315 claims
- Clonazepam119 claims
- Pramipexole Dihydrochloride88 claims
- Horizant39 claims
- Modafinil31 claims
- Fluticasone-Salmeterol29 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.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $10,700.19
42 payments; by number, the most common kind was food and beverage; the largest payer was Avadel Cns Pharmaceuticals, LLC. The 664 providers of this specialty with any payment received $3,724.37 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
- Southern California Pulmonary And Sleep Disorders Medical Center Inc.Thousand Oaks, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald A. Popper among 129 sleep medicine (internal medicine) physician records in California
Ronald A. Popper, M.D. F.C.C.P. is one of 129 sleep medicine (internal medicine) physician records with a practice address in California. 95% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 71% newer
- In a Medicare fileYes · 95% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated1979 · median 2006 among the 106 with a school on file
- Record last updated2023 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RS0012X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Internal Medicine) Physician providers in California
There are 129 sleep medicine (internal medicine) physician records in California.
All 129 in California → Every provider in Thousand Oaks → Sleep Medicine (Internal Medicine) Physician nationwide →
The 8 sleep medicine (internal medicine) physician records with the nearest ZIP codes
- Sidney Iriana, MDThousand Oaks, CA 913611003435017
- Serghei Burcovschii, MDTarzana, CA 913561629573563
- Mahtab Moshtagh Sisan, MDPorter Ranch, CA 913261982197901
- Illia KovalevSherman Oaks, CA 914031639438435
- Keren Fogelfeld, M.D.Encino, CA 914361215185038
- Susie Fong, M.D.Encino, CA 914361447549654
- Babak Hakimisefat, D.O.Burbank, CA 915051114189354
- Earl Young, M.D.Pasadena, CA 911061639151830
Common questions
What is Ronald A. Popper, M.D. F.C.C.P.'s NPI number?
Ronald A. Popper, M.D. F.C.C.P.'s National Provider Identifier (NPI) is 1336162957, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald A. Popper, M.D. F.C.C.P. located?
The NPPES record lists a practice address at 317 S Moorpark RD, Thousand Oaks, CA, 91361. Phone: (805) 557-9930. Providers update this record themselves, so call before visiting.
How can I verify Ronald A. Popper, M.D. F.C.C.P.'s license?
NPPES lists California license number A35734, 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 Ronald A. Popper, M.D. F.C.C.P. prescribe under Medicare Part D?
In 2024, Ronald A. Popper, M.D. F.C.C.P. had 1,059 Medicare Part D claims for 164 beneficiaries; the average among sleep medicine (internal medicine) physician prescribers was 585. Part D covers Medicare prescriptions only.
What is Ronald A. Popper, M.D. F.C.C.P.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.