Ryan Guinness, M.D.
NPI 1871987131 · Student in an Organized Health Care Education/Training Program · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Guinness, M.D. is a Student in an Organized Health Care Education/Training Program provider in San Francisco, CA (NPI 1871987131).
Provider details
- NPI number
- 1871987131
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 58 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 244 | 74 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 108 | 108 |
| Lisinopril | 97 | 38 |
| Amlodipine Besylate | 85 | 30 |
| Gabapentin | 78 | 21 |
| Metformin Hclbrand: Metformin Hcl Er | 71 | 22 |
| Trazodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-03-25
- Last updated
- 2021-12-17
Frequently asked questions
- What is Ryan Guinness's NPI number?
- Ryan Guinness's National Provider Identifier (NPI) is 1871987131, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Guinness's specialty?
- Ryan Guinness is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Ryan Guinness located?
- Ryan Guinness's practice location on file with NPPES is 2425 Geary Blvd # M160, San Francisco, CA 94115-3358.
- What is Ryan Guinness's phone number?
- The practice phone number listed in the NPPES registry for Ryan Guinness is (415) 833-9182.
- Does Ryan Guinness accept Medicare?
- Ryan Guinness is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Guinness's NPI active?
- Yes — Ryan Guinness's NPI (1871987131) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.