Ronald Dean Sager, M.D.
Psychiatry Physician · Calabasas, CA
Ronald Dean Sager, M.D. is a psychiatry physician with a practice address in Calabasas, California, and NPI 1346324183, issued on Oct 25, 2006. Check the license (California C25663, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald Dean Sager
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- C25663 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4505 Las Virgenes RD., Calabasas, CA 91302
- Phone
- (818) 783-3835
- Enumerated
- Oct 25, 2006
- Record last updated
- Aug 22, 2024
- Fax
- (818) 880-0808
- Medicare enrollment
- Enrolled (PECOS I20120427000576); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Ronald Dean Sager in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C25663Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average psychiatry physician in 2024
108 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Vraylar18 claims
- Bupropion Xl12 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: $344.13
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,693 providers of this specialty with any payment received $4,954.93 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.
Ronald Dean Sager among 8,673 psychiatry physician records in California
Ronald Dean Sager, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1962 · median 2005 among the 3,295 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 psychiatry physician records list a practice address in Calabasas
They are 18 of the 786 NPPES records with a practice address in Calabasas, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Calabasas → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Aneeta Afzal, M.D.Calabasas, CA 913021396727335
- Rod Amiri, MDCalabasas, CA 913021083769293
- Robert Feeley, M.D.Calabasas, CA 913021518224328
- Roman Garcia, MD, PHDCalabasas, CA 913021033505169
- Tarik Hadzic, M.D., PH.D.Calabasas, CA 913021033559679
- Matthew Markis, D.O.Calabasas, CA 913021780944470
- Ronald Persaud, M.D.Calabasas, CA 913021073614913
- Rebecca Reyes, M.D.Calabasas, CA 913021316156607
Common questions
What is Ronald Dean Sager, M.D.'s NPI number?
Ronald Dean Sager, M.D.'s National Provider Identifier (NPI) is 1346324183, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Dean Sager, M.D. located?
The NPPES record lists a practice address at 4505 Las Virgenes RD., Calabasas, CA, 91302. Phone: (818) 783-3835. Providers update this record themselves, so call before visiting.
How can I verify Ronald Dean Sager, M.D.'s license?
NPPES lists California license number C25663, 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 Dean Sager, M.D. prescribe under Medicare Part D?
In 2024, Ronald Dean Sager, M.D. had 108 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.