Frederick J. Karubian, MD
Nephrology Physician · Santa Monica, CA
Frederick J. Karubian, MD is a nephrology physician with a practice address in Santa Monica, California, and NPI 1275613655, issued on Oct 17, 2006. Check the license (California A42957, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frederick J. Karubian
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A42957 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2001 Santa Monica Blvd # 765-W, Santa Monica, CA 90404
- Phone
- (818) 817-9832
- Enumerated
- Oct 17, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (818) 817-9835
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Verify Frederick J. Karubian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A42957Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average nephrology physician in 2024
25 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 76% of 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.
Frederick J. Karubian among 1,468 nephrology physician records in California
Frederick J. Karubian, MD is one of 1,468 nephrology physician records with a practice address in California. 88% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2007 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Santa Monica → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Ramon Durazo, MDSanta Monica, CA 904041346701802
- Earl Gordon, M.D.Santa Monica, CA 904041053534925
- Morris Grabie, MDSanta Monica, CA 904041659399681
- Reza Khorsan, M.D.Santa Monica, CA 904041356536585
- Ying Hui Luu, M.D.Santa Monica, CA 904041922486893
- Connie Rhee, M.D.Santa Monica, CA 904041083835276
- Fawad Zafar-Khan, MDSanta Monica, CA 904041699827873
- Nasimeh Yazdani, M.D.Santa Monica, CA 904031154376580
Common questions
What is Frederick J. Karubian, MD's NPI number?
Frederick J. Karubian, MD's National Provider Identifier (NPI) is 1275613655, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederick J. Karubian, MD located?
The NPPES record lists a practice address at 2001 Santa Monica Blvd # 765-W, Santa Monica, CA, 90404. Phone: (818) 817-9832. Providers update this record themselves, so call before visiting.
How can I verify Frederick J. Karubian, MD's license?
NPPES lists California license number A42957, 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 Frederick J. Karubian, MD prescribe under Medicare Part D?
In 2024, Frederick J. Karubian, MD had 25 Medicare Part D claims; the average among nephrology physician prescribers was 1,465. 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.