Ryan Cook, MD
Family Medicine Physician · San Rafael, CA
Ryan Cook, MD is a family medicine physician with a practice address in San Rafael, California, and NPI 1588284756, issued on Apr 17, 2020. Check the license (California A187120, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ryan Cook
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A187120 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1650 Los Gamos Dr, San Rafael, CA 94903
- Phone
- (415) 444-2000
- Enumerated
- Apr 17, 2020
- Record last updated
- Jul 25, 2023
- Medicare enrollment
- Enrolled (PECOS I20231107003340); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1650 Los Gamos Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Georgia CroweOccupational Therapist1053231878
- Alexander Edwards, MS CCC SLPSpeech-Language Pathologist1740051069
Verify Ryan Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A187120Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average family medicine physician in 2024
4,852 Medicare Part D claims for 976 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 227 claims were for opioids.
Most prescribed
- Atorvastatin Calcium307 claims
- Levothyroxine Sodium179 claims
- Lisinopril169 claims
- Amlodipine Besylate156 claims
- Losartan Potassium151 claims
- Gabapentin125 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 Rafael, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Cook among 17,133 family medicine physician records in California
Ryan Cook, MD 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 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2019 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 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).
37 family medicine physician records list a practice address in San Rafael
They are 37 of the 3,159 NPPES records with a practice address in San Rafael, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Rafael → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Charles Calza, M.D.San Rafael, CA 949031629081161
- John Clothier, M.D.San Rafael, CA 949031750431250
- Marissa Fernandez Kiemele, MDSan Rafael, CA 949031144297516
- Orna Hananel, MDSan Rafael, CA 949031497839484
- Ann Hathaway, MDSan Rafael, CA 949031093893752
- Brian Hertz, MDSan Rafael, CA 949031831273812
- Meenal Lohtia, M.D.San Rafael, CA 949031205883121
- Sarah Mansell, MDSan Rafael, CA 949031548332364
Common questions
What is Ryan Cook, MD's NPI number?
Ryan Cook, MD's National Provider Identifier (NPI) is 1588284756, issued on Apr 17, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Cook, MD located?
The NPPES record lists a practice address at 1650 Los Gamos Dr, San Rafael, CA, 94903. Phone: (415) 444-2000. Providers update this record themselves, so call before visiting.
How can I verify Ryan Cook, MD's license?
NPPES lists California license number A187120, 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 Ryan Cook, MD prescribe under Medicare Part D?
In 2024, Ryan Cook, MD had 4,852 Medicare Part D claims for 976 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.