Dean Loller Rider, MD
Gastroenterology Physician · San Francisco, CA
Dean Loller Rider, MD is a gastroenterology physician with a practice address in San Francisco, California, and NPI 1487759296, issued on Sep 14, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dean Loller Rider
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G401240 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3580 California Street, San Francisco, CA 94118
- Phone
- (415) 658-7497
- Enumerated
- Sep 14, 2006
- Record last updated
- Jun 14, 2023
- Fax
- (415) 929-1307
- Medicare enrollment
- Enrolled (PECOS I20110228000782); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Verify Dean Loller Rider in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average gastroenterology physician in 2024
178 Medicare Part D claims for 38 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf21 claims
- Celecoxib12 claims
- Amlodipine Besylate11 claims
- Linzess11 claims
- Omeprazole11 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: $58.28
3 payments; by number, the most common kind was food and beverage; the largest payer was Qol Medical, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Dean Loller Rider among 2,140 gastroenterology physician records in California
Dean Loller Rider, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1979 · median 2002 among the 1,538 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in San Francisco → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Wing Kam, M.D., PH.D.San Francisco, CA 941181003964826
- Brock Macdonald, M.D.San Francisco, CA 941171689901506
- James Ostroff, MDSan Francisco, CA 941171477505881
- Harvey Watts, M.D.San Francisco, CA 941171184640872
- Zealous Wiley, MDOakland, CA 941161740232610
- Waseem Ahmad, M.D.San Francisco, CA 941151649633991
- Charlotte Ching, MDSan Francisco, CA 941151407475312
- Annsa Huang, MDSan Francisco, CA 941211861881658
Common questions
What is Dean Loller Rider, MD's NPI number?
Dean Loller Rider, MD's National Provider Identifier (NPI) is 1487759296, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dean Loller Rider, MD located?
The NPPES record lists a practice address at 3580 California Street, San Francisco, CA, 94118. Phone: (415) 658-7497. Providers update this record themselves, so call before visiting.
How can I verify Dean Loller Rider, MD's license?
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 Dean Loller Rider, MD prescribe under Medicare Part D?
In 2024, Dean Loller Rider, MD had 178 Medicare Part D claims for 38 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.