Frank Stephen Ranuska, M.D.
Psychiatry Physician · San Rafael, CA
Frank Stephen Ranuska, M.D. is a psychiatry physician with a practice address in San Rafael, California, and NPI 1093910051, issued on Jun 19, 2007. Check the license (California G40501, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frank Stephen Ranuska
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G40501 CA
Self-reported in NPPES; status is on the state search - Practice location
- 49 Glenaire Dr, San Rafael, CA 94901
- Phone
- (415) 378-7644
- Enumerated
- Jun 19, 2007
- Record last updated
- Feb 28, 2024
- Fax
- (415) 457-8618
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Frank Stephen Ranuska in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G40501Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average psychiatry physician in 2024
147 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Clonazepam24 claims
- Duloxetine Hcl23 claims
- Doxycycline Hyclate13 claims
- Alprazolam11 claims
- Buprenorphine-Naloxone11 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.
Frank Stephen Ranuska among 8,673 psychiatry physician records in California
Frank Stephen Ranuska, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 psychiatry physician records list a practice address in San Rafael
They are 33 of the 3,159 NPPES records with a practice address in San Rafael, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in San Rafael → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Steven Balt, MDSan Rafael, CA 949011235308297
- Jason Bermak, M.D., PH.D.San Rafael, CA 949011093844128
- Robin Bitner, M.D.San Rafael, CA 949011558490326
- Carson Brown, M.D.San Rafael, CA 949011770804114
- Michael Ciranni, M.D., PH.D.San Rafael, CA 949011760680722
- Lawrence Lanes, MDSan Rafael, CA 949011306944475
- Carlos Lopez, MDSan Rafael, CA 949011114935574
- Nikhil Majumdar, M.D.San Rafael, CA 949011982818480
Common questions
What is Frank Stephen Ranuska, M.D.'s NPI number?
Frank Stephen Ranuska, M.D.'s National Provider Identifier (NPI) is 1093910051, issued on Jun 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Frank Stephen Ranuska, M.D. located?
The NPPES record lists a practice address at 49 Glenaire Dr, San Rafael, CA, 94901. Phone: (415) 378-7644. Providers update this record themselves, so call before visiting.
How can I verify Frank Stephen Ranuska, M.D.'s license?
NPPES lists California license number G40501, 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 Stephen Ranuska, M.D. prescribe under Medicare Part D?
In 2024, Frank Stephen Ranuska, M.D. had 147 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.