Ashok Sunder Raj, M.D.
Nephrology Physician · Pasadena, CA
Ashok Sunder Raj, M.D. is a nephrology physician with a practice address in Pasadena, California, and NPI 1093744070, issued on Jul 1, 2006. Check the license (California A41453, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ashok Sunder Raj
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A41453 CA
Self-reported in NPPES; status is on the state search - Practice location
- 301 S Fair Oaks Ave Ste 405, Pasadena, CA 91105
- Phone
- (626) 794-7075
- Enumerated
- Jul 1, 2006
- Record last updated
- Mar 6, 2026
- Fax
- (626) 404-7545
- Medicaid ID
- 00A414530 CA
- Medicare enrollment
- Enrolled (PECOS I20040902000613); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 301 S Fair Oaks Ave Ste 405
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Justin Chen, MDNephrology Physician1447526066
- Dolores Figueroa, M.D.Internal Medicine Physician1033287701
- Jennifer Kahau-Segovia, FNPNurse Practitioner1629608906
- Ilian Marquez, M.D.Nephrology Physician1710019906
- Nalini Mattai, MDGeneral Practice Physician1982803052
- Elana Sheldon, MDInternal Medicine Physician1790708915
Verify Ashok Sunder Raj in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A41453Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average nephrology physician in 2024
1,012 Medicare Part D claims for 175 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Amlodipine Besylate147 claims
- Furosemide134 claims
- Potassium Chloride85 claims
- Calcitriol73 claims
- Carvedilol64 claims
- Hydralazine Hcl64 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.
The MIPS final score for 2023 (Medicare payment program): 35.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $44.04
2 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Arroyo Nephrology AssociatesPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
Other nephrology physician records in California
- Antoine Abcar, MDLos Angeles, CA1245301159
- Basmah Abdalla, M.D.Los Angeles, CA1629394002
- Omaran Abdeen, M.D.Mission Hills, CA1700878410
- Joseph Abdelmalek, M.DSan Diego, CA1740485531
- Lama Abdelnour, MDLos Angeles, CA1477817542
- Amir Abdi Pour, MDLoma Linda, CA1912187477
- Anas Abou-Ismail, MDPalm Springs, CA1598078784
- Graham Abra, M.D.Stanford, CA1760644678
- Sreedhar Adapa, M.D.Visalia, CA1881997872
- Gbemisola Adenuga, M.D.Los Angeles, CA1952464661
Common questions
What is Ashok Sunder Raj, M.D.'s NPI number?
Ashok Sunder Raj, M.D.'s National Provider Identifier (NPI) is 1093744070, issued on Jul 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ashok Sunder Raj, M.D. located?
The NPPES record lists a practice address at 301 S Fair Oaks Ave Ste 405, Pasadena, CA, 91105. Phone: (626) 794-7075. Providers update this record themselves, so call before visiting.
How can I verify Ashok Sunder Raj, M.D.'s license?
NPPES lists California license number A41453, 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 Ashok Sunder Raj, M.D. prescribe under Medicare Part D?
In 2024, Ashok Sunder Raj, M.D. had 1,012 Medicare Part D claims for 175 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Ashok Sunder Raj, M.D.'s MIPS final score?
The 2023 MIPS final score is 35.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.