Ryan Richard Guinness, M.D.
Student in an Organized Health Care Education/Training Program · San Francisco, CA
Ryan Richard Guinness, M.D. is a student in an organized health care education/training program with a practice address in San Francisco, California, and NPI 1871987131, issued on Mar 25, 2015. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ryan Richard Guinness
- Credential
- M.D.
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 2425 Geary Blvd # M160, San Francisco, CA 94115
- Phone
- (415) 833-9182
- Enumerated
- Mar 25, 2015
- Record last updated
- Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170816002355); accepts Medicare assignment
- Medical or professional school
- Geisel School Of Medicine At Dartmouth, 2015
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 40,652 in California → Look up another NPI →
Also registered at 2425 Geary Blvd # M160
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Benjamin Bristow, MD, MPH, DTM&HHospitalist Physician1710296371
- Sunaina DowrayStudent in an Organized Health Care Education/Training Program1578980652
- Blake Henderson, M.D.Student in an Organized Health Care Education/Training Program1992064893
- Ami KapadiaStudent in an Organized Health Care Education/Training Program1992091979
- Rosemary Ku, M.D.Internal Medicine Physician1710250121
- Phuong-Quang Lam, MDInternal Medicine Physician1871096669
Verify Ryan Richard Guinness in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13.6 times the Medicare Part D claims of the average student in an organized health care education/training program in 2024
2,513 Medicare Part D claims for 517 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 23 claims were for opioids.
Most prescribed
- Atorvastatin Calcium244 claims
- Paxlovid108 claims
- Lisinopril97 claims
- Amlodipine Besylate85 claims
- Gabapentin78 claims
- Metformin Hcl Er71 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
- Permanente Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Richard Guinness among 40,652 student in an organized health care education/training program records in California
Ryan Richard Guinness, M.D. is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 11% of them.
- NPI issued2015 · 11% of these records are older, 87% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 6% of these records are
- Graduated2015 · median 2017 among the 2,409 with a school on file
- Record last updated2021 · 26% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3,035 student in an organized health care education/training program records list a practice address in San Francisco
They are 3,035 of the 38,143 NPPES records with a practice address in San Francisco, and 40,652 student in an organized health care education/training program records in California.
All 40,652 in California → Every provider in San Francisco → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- Lisa Chui, M.D.San Francisco, CA 941151689992927
- Niloofar Fadaki, M.D.San Francisco, CA 941151922275783
- Choon Hwa Goh, M.D, MPHSan Francisco, CA 941151922238864
- Pristine Lee, M.DSan Francisco, CA 941151134328198
- Julia Macisaac, MDSan Francisco, CA 941151427238146
- Rebecca O'Neill, M.D.San Francisco, CA 941151356676886
- Erin PollardSan Francisco, CA 941151326271719
- Giuliette RechtSan Francisco, CA 941151861708455
Common questions
What is Ryan Richard Guinness, M.D.'s NPI number?
Ryan Richard Guinness, M.D.'s National Provider Identifier (NPI) is 1871987131, issued on Mar 25, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Richard Guinness, M.D. located?
The NPPES record lists a practice address at 2425 Geary Blvd # M160, San Francisco, CA, 94115. Phone: (415) 833-9182. Providers update this record themselves, so call before visiting.
How can I verify Ryan Richard Guinness, M.D.'s license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ryan Richard Guinness, M.D. prescribe under Medicare Part D?
In 2024, Ryan Richard Guinness, M.D. had 2,513 Medicare Part D claims for 517 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.