Ryan Cook, MD
NPI 1588284756 · Family Medicine Physician · San Rafael, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Cook, MD is a Family Medicine Physician provider in San Rafael, CA (NPI 1588284756).
Provider details
- NPI number
- 1588284756
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A187120 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% 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 · 100 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 307 | 148 |
| Levothyroxine Sodium | 179 | 75 |
| Lisinopril | 169 | 78 |
| Amlodipine Besylate | 156 | 73 |
| Losartan Potassium | 151 | 65 |
| Gabapentin | 125 | 47 |
| Albuterol Sulfate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-17
- Last updated
- 2023-07-25
- Certified
- 2023-07-25
Frequently asked questions
- What is Ryan Cook's NPI number?
- Ryan Cook's National Provider Identifier (NPI) is 1588284756, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Cook's specialty?
- Ryan Cook is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Cook located?
- Ryan Cook's practice location on file with NPPES is 1650 Los Gamos Dr, San Rafael, CA 94903-1850.
- What is Ryan Cook's phone number?
- The practice phone number listed in the NPPES registry for Ryan Cook is (415) 444-2000.
- Does Ryan Cook accept Medicare?
- Ryan Cook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Cook's NPI active?
- Yes — Ryan Cook's NPI (1588284756) is active in the NPPES registry as of the last update on 2023-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.