Robert Ryan Torres Casten, M.D.
Family Medicine Physician · Temecula, CA
Robert Ryan Torres Casten, M.D. is a family medicine physician with a practice address in Temecula, California, and NPI 1063670958, issued on May 28, 2008. Check the license (California A120704, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert Ryan Torres Casten
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A120704 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27309 Madison Ave, Temecula, CA 92590
- Phone
- (866) 984-7483
- Enumerated
- May 28, 2008
- Record last updated
- Nov 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20131018000094); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 27309 Madison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Ryan Torres Casten in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120704Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average family medicine physician in 2024
838 Medicare Part D claims for 579 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 17 claims were for opioids.
Most prescribed
- Doxycycline Monohydrate151 claims
- Prednisone86 claims
- Amoxicillin-Clavulanate Potass73 claims
- Mupirocin51 claims
- Meloxicam44 claims
- Albuterol Sulfate Hfa39 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Ryan Torres Casten among 17,133 family medicine physician records in California
Robert Ryan Torres Casten, M.D. is one of 17,133 family medicine 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 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2004 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
80 family medicine physician records list a practice address in Temecula
They are 80 of the 4,057 NPPES records with a practice address in Temecula, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Temecula → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Cristina Bailey, M.D.Temecula, CA 925901598715823
- David Bucher, MDTemecula, CA 925901790735033
- Walter Combs, MDTemecula, CA 925901104876598
- Mary Gentile, DOTemecula, CA 925901861480998
- Gerardo Hizon, MD, FAAFP, CAQSMTemecula, CA 925901205898558
- Claudia Hsieh, D.O.Temecula, CA 925901255515979
- Tae-Woong Im, MDTemecula, CA 925901912956855
- Samuel Ko, MDTemecula, CA 925901457301855
Common questions
What is Robert Ryan Torres Casten, M.D.'s NPI number?
Robert Ryan Torres Casten, M.D.'s National Provider Identifier (NPI) is 1063670958, issued on May 28, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Robert Ryan Torres Casten, M.D. located?
The NPPES record lists a practice address at 27309 Madison Ave, Temecula, CA, 92590. Phone: (866) 984-7483. Providers update this record themselves, so call before visiting.
How can I verify Robert Ryan Torres Casten, M.D.'s license?
NPPES lists California license number A120704, 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 Robert Ryan Torres Casten, M.D. prescribe under Medicare Part D?
In 2024, Robert Ryan Torres Casten, M.D. had 838 Medicare Part D claims for 579 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.