Frank Ruiz, MD
Emergency Medicine Physician · Redwood City, CA
Frank Ruiz, MD is an emergency medicine physician with a practice address in Redwood City, California, and NPI 1285708503, issued on Nov 20, 2006. Check the license (California G57310, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frank Ruiz
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G57310 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1150 Veterans Blvd, Redwood City, CA 94063
- Phone
- (650) 299-2000
- Enumerated
- Nov 20, 2006
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00G573100 CA
- Medicare enrollment
- Enrolled (PECOS I20101208001304); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1984
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1150 Veterans Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Everett Austin, MDNeurology Physician1083792642
- Lauren Bacon, DPTPhysical Therapist1295167583
Verify Frank Ruiz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G57310Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average emergency medicine physician in 2024
294 Medicare Part D claims for 190 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 26 claims were for opioids.
Most prescribed
- Ciprofloxacin Hcl17 claims
- Prednisone17 claims
- Cefpodoxime Proxetil16 claims
- Oxycodone Hcl16 claims
- Cefadroxil13 claims
- Ondansetron Odt13 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 IncRedwood City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Frank Ruiz among 7,751 emergency medicine physician records in California
Frank Ruiz, MD is one of 7,751 emergency 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1984 · median 2011 among the 4,560 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Redwood City → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- James Ahn, MDRedwood City, CA 940631528146180
- Sunil Bhopale, MDRedwood City, CA 940631760561807
- George Bulloch, MDRedwood City, CA 940631134207723
- Gustavo Diaz, MDRedwood City, CA 940631538122635
- Walter Eades, MDRedwood City, CA 940631467530006
- Micheal Heinrich, M.D.Redwood City, CA 940631427150531
- Adam Landsdorf, MDRedwood City, CA 940631134207798
- Gregg Letsinger, MDRedwood City, CA 940631962580555
Common questions
What is Frank Ruiz, MD's NPI number?
Frank Ruiz, MD's National Provider Identifier (NPI) is 1285708503, issued on Nov 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frank Ruiz, MD located?
The NPPES record lists a practice address at 1150 Veterans Blvd, Redwood City, CA, 94063. Phone: (650) 299-2000. Providers update this record themselves, so call before visiting.
How can I verify Frank Ruiz, MD's license?
NPPES lists California license number G57310, 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 Frank Ruiz, MD prescribe under Medicare Part D?
In 2024, Frank Ruiz, MD had 294 Medicare Part D claims for 190 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.