Dr. Ashok Sunder Raj, MD
- Medicare services, 2024
- 1,365
- Medicare patients, 2024
- 349
- Part D claims, 2024
- 1,012
- MIPS score, 2024
- 75
- Hospital affiliations
- 2
- Practice address
- 1111 S Arroyo Parkway #150, Pasadena, CA 91105
- Practice phone
- Call (626) 441-9500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arroyo Dialysis
Dialysis Center - Independent · Pasadena, California
Find Dr. Sunder Raj's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ashok Sunder Raj is a nephrologist in Pasadena, California
Dr. Sunder Raj practices at Arroyo Dialysis in Pasadena, California.
Dr. Sunder Raj's NPI, 1093744070, was assigned on July 1, 2006. Dr. Sunder Raj graduated from St. John's Medical College in 1975. Dr. Sunder Raj holds California license A41453.
- NPI
- 1093744070NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052220118
- NPI enumeration date
- July 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 441-9500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ashok Sunder Raj practices at Arroyo Dialysis in Pasadena, California
Dr. Sunder Raj's primary practice is Arroyo Dialysis, at 1111 S Arroyo Parkway #150, Pasadena, CA 91105 in Los Angeles County. The practice phone is (626) 441-9500.
- Arroyo Dialysis1111 S Arroyo Parkway #150, Pasadena, CA 91105 · Los Angeles CountyPhone(626) 441-9500
Source: Dmand AI Affiliation Data
Dr. Ashok Sunder Raj is affiliated with 6 sites of care and 1 medical group
Dr. Sunder Raj's primary practice is Arroyo Dialysis in Pasadena, California. Dr. Sunder Raj is also affiliated with Huntington Hospital. The medical group on file is Arroyo Nephrology Associates. Dmand AI also links Dr. Sunder Raj to 1 more hospital, 2 dialysis centers and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ashok Sunder Raj's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sunder Raj practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arroyo Dialysis | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ashok Sunder Raj is one of 1,401 nephrologists in California
Nephrology is Dr. Sunder Raj's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Sunder Raj is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Sunder Raj's licenses on file in 2 states: California and Wisconsin.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Wisconsin license
Clinical focus
Dmand AI lists acute kidney failure, chronic kidney disease and fluid and electrolyte imbalances among the conditions Dr. Sunder Raj treats.
Nephrologists near Dr. Sunder Raj
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ashok Sunder Raj billed Medicare for 1,365 services in 2024
CMS data shows 1,365 Medicare services from Dr. Sunder Raj across 8 procedure codes in 2024, for 349 Medicare patients. Medicare paid $145,457 for them.
Dr. Sunder Raj's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2072024: 1,1604%
- Tests and treatments
- 2023: 2322024: 20512%
Where Dr. Sunder Raj's Medicare services took place, 2024
- In an office58643%
- In a facility77957%
Dr. Sunder Raj compared with the California median for nephrologists, 2024
- Dr. Sunder Raj
- California median
- Medicare services
- 1,365vs 1,08426% above
- Medicare patients
- 349vs 30714% above
- Part D claims
- 806vs 95516% below
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Sunder Raj's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sunder Raj and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ashok Sunder Raj treated 349 Medicare patients in 2024, average age 77
CMS counts 349 Medicare patients who saw Dr. Sunder Raj in 2024. The largest group is 75 to 84, with 136 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 42% are also on Medicaid. Their average risk score is 4.04, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Sunder Raj's median patient age at 73, with 43% women.
Dr. Sunder Raj's Medicare patients by age, 2024
Dr. Sunder Raj's Medicare patients by sex, 2024
- Women16447%
- Men18553%
Chronic conditions among Dr. Sunder Raj's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes64%
- Arthritis60%
- Ischemic heart disease60%
- Heart failure52%
- Atrial fibrillation36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sunder Raj's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women43%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ashok Sunder Raj wrote 1,012 Medicare Part D claims in 2024
In 2024, Dr. Sunder Raj wrote 1,012 Medicare Part D claims for 175 patients. 92% of them were for generic drugs. CMS names the drug for 806 of them, across 18 drugs with 11 or more claims each, at $31,717 in total drug cost. In 2023, CMS named 684 claims across 12 drugs.
Dr. Sunder Raj's Part D claims by kind of drug, 2024
- Generic927 claims92%
- Brand-name85 claims8%
Dr. Sunder Raj's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Sunder Raj's Part D claims, 2024
- Antibiotics2%16 of 1,012 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6842024: 80618%
Drugs named by CMS: 18 in 2024, 12 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ashok Sunder Raj scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Sunder Raj for performance year 2024, reported individually. Dr. Sunder Raj accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ashok Sunder Raj received $230 in industry payments from 2017 to 2025
CMS Open Payments shows 8 general payments to Dr. Sunder Raj from 4 drug and device companies from 2017 to 2025. Education make up the largest share, 59% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $136.
General payments to Dr. Sunder Raj by program year, 2017 to 2025
General payments to Dr. Sunder Raj by kind, 2017 to 2025
- Education$13659%
- Food and beverage$9541%
Companies that paid Dr. Sunder Raj the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ashok Sunder Raj graduated from St. John's Medical College
Dr. Sunder Raj graduated from St. John's Medical College in 1975.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Ashok Sunder Raj accepts plans from 13 insurance carriers
Dr. Sunder Raj is in network with 13 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +5 more carriersWith a free account
Plan types Dr. Sunder Raj accepts, by number of carriers
- Medicare9
- PPO8
- HMO6
- EPO5
- POS5
Source: Dmand AI Insurance Network Data
Sources for Dr. Ashok Sunder Raj's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ashok Sunder Raj
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ashok Sunder Raj's NPI number?
Dr. Ashok Sunder Raj's NPI number is 1093744070. It was assigned on July 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ashok Sunder Raj?
Dr. Ashok Sunder Raj is a nephrologist in Pasadena, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Ashok Sunder Raj practice?
Dr. Sunder Raj practices at 1111 S Arroyo Parkway #150, Pasadena, CA 91105. Dr. Sunder Raj's primary practice is Arroyo Dialysis in Pasadena, California. Dmand AI also links Dr. Sunder Raj to 1 hospital, 2 dialysis centers and 1 group practice or clinic.
What is Dr. Ashok Sunder Raj's office phone number?
The practice phone on file for Dr. Sunder Raj is (626) 441-9500.
What is Dr. Ashok Sunder Raj's medical license number?
Dr. Sunder Raj holds California license A41453, one of the licenses on file in 2 states.
Which states has Dr. Ashok Sunder Raj been licensed in?
Dmand AI has state licenses on file for Dr. Sunder Raj in California (1984 to 2026) and Wisconsin (1984 to 1985).
Which hospitals is Dr. Ashok Sunder Raj affiliated with?
Dr. Sunder Raj is affiliated with Huntington Hospital. Dmand AI links Dr. Sunder Raj to 1 more hospital.
What medical group is Dr. Ashok Sunder Raj part of?
Dr. Sunder Raj is linked to Arroyo Nephrology Associates.
Does Dr. Ashok Sunder Raj accept Medicare?
Yes. CMS data shows Dr. Sunder Raj billed Medicare for 1,365 services in 2024, and Dr. Sunder Raj accepts Medicare assignment.
What is Dr. Ashok Sunder Raj's MIPS score?
Dr. Sunder Raj's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Ashok Sunder Raj see?
CMS counts 349 Medicare patients who saw Dr. Sunder Raj in 2024, with an average age of 77.
Is Dr. Ashok Sunder Raj board certified?
Yes. Dr. Sunder Raj is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Ashok Sunder Raj bill to Medicare?
In 2024, Dr. Sunder Raj's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99213) and dialysis (90960).
Where did Dr. Ashok Sunder Raj go to medical school?
Dr. Sunder Raj graduated from St. John's Medical College in 1975.
What drugs does Dr. Ashok Sunder Raj prescribe most?
In 2024 Medicare Part D data, Dr. Sunder Raj's most prescribed drugs by claims were Amlodipine Besylate, Furosemide and Potassium Chloride.
Has Dr. Ashok Sunder Raj received payments from drug or device companies?
CMS Open Payments shows $230 in general payments to Dr. Sunder Raj from 4 companies from 2017 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Ashok Sunder Raj been practicing?
Dr. Sunder Raj graduated from medical school in 1975, 51 years ago.
What insurance does Dr. Ashok Sunder Raj accept?
Dr. Sunder Raj is in network with 13 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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