Ronald A. Kass, MD
Sleep Medicine (Internal Medicine) Physician · Stockton, CA
Ronald A. Kass, MD is a sleep medicine (internal medicine) physician with a practice address in Stockton, California, and NPI 1043215270, issued on Jun 15, 2005. Check the license (California C42006, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald A. Kass
- Credential
- MD
- Primary taxonomy
- Sleep Medicine (Internal Medicine) Physician 207RS0012X
- License number
- C42006 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1801 E March LN Ste C310, Stockton, CA 95210
- Phone
- (209) 465-5731
- Enumerated
- Jun 15, 2005
- Record last updated
- Dec 7, 2022
- Fax
- (209) 465-0230
- Medicaid ID
- 00C420060 CA
- Medicare enrollment
- Enrolled (PECOS I20040324000926); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1980
- 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 1801 E March LN Ste C310
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amit Kalra, DOSleep Medicine (Internal Medicine) Physician1174083547
- Jagjeet Kalra, MDSleep Medicine (Internal Medicine) Physician1619908944
Verify Ronald A. Kass in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C42006Check 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 sleep medicine (internal medicine) physician in 2024
455 Medicare Part D claims for 104 beneficiaries, against an average of 585 among the 852 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Pramipexole Dihydrochloride53 claims
- Dextroamphetamine-Amphetamine49 claims
- Fluticasone Propionate44 claims
- Clonazepam39 claims
- Trazodone Hcl35 claims
- Zolpidem Tartrate32 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 practice group's MIPS final score for 2023 (Medicare payment program): 81.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $987.52
31 payments; by number, the most common kind was food and beverage; the largest payer was Jazz Pharmaceuticals Inc. 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
- Pacific Sleep Disorders Center A California General PartnershipStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald A. Kass among 129 sleep medicine (internal medicine) physician records in California
Ronald A. Kass, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 95% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated1980 · median 2006 among the 106 with a school on file
- Record last updated2022 · 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 Stockton → Sleep Medicine (Internal Medicine) Physician nationwide →
The 8 sleep medicine (internal medicine) physician records with the nearest ZIP codes
- Jagjeet Kalra, MDStockton, CA 952101619908944
- Amit Kalra, DOStockton, CA 952101174083547
- Ajitpal Sethi, M.D.Stockton, CA 952091235322603
- Kiritkumar Patel, M.D.Modesto, CA 953501427247931
- Avantika RudrarajuModesto, CA 953501952742751
- Jennifer Acostamadiedo, MDSanta Cruz, CA 950651417479288
- Sirish Nakka, MDSanta Cruz, CA 950651619406725
- Poulomee Tripathi, MDSanta Cruz, CA 950651255071049
Common questions
What is Ronald A. Kass, MD's NPI number?
Ronald A. Kass, MD's National Provider Identifier (NPI) is 1043215270, issued on Jun 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ronald A. Kass, MD located?
The NPPES record lists a practice address at 1801 E March LN Ste C310, Stockton, CA, 95210. Phone: (209) 465-5731. Providers update this record themselves, so call before visiting.
How can I verify Ronald A. Kass, MD's license?
NPPES lists California license number C42006, 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. Kass, MD prescribe under Medicare Part D?
In 2024, Ronald A. Kass, MD had 455 Medicare Part D claims for 104 beneficiaries; the average among sleep medicine (internal medicine) physician prescribers was 585. Part D covers Medicare prescriptions only.
What is Ronald A. Kass, MD's MIPS final score?
The 2023 MIPS final score is 81.9 of 100, reported for the practice group. 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.