Dr. Rishu Marwaha, MD
- Medicare services, 2024
- 828
- Medicare patients, 2024
- 244
- Part D claims, 2024
- 8,585
- MIPS score, 2024
- 78
- Hospital affiliations
- 1
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Marwaha's professional email, personal email and mobile number
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Dr. Rishu Marwaha is an internist in Fontana, California
Dr. Marwaha practices at Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
Dr. Marwaha's NPI, 1457490294, was assigned on February 6, 2007. Dr. Marwaha holds California license A91336.
- NPI
- 1457490294NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032213012
- NPI enumeration date
- February 6, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rishu Marwaha practices at Fontana Medical Center in Fontana, California
Dr. Marwaha's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Source: Dmand AI Affiliation Data
Dr. Rishu Marwaha is affiliated with 4 sites of care and 3 medical groups
Dr. Marwaha's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Marwaha to 3 more group practices and clinics and 2 medical groups, 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. Rishu Marwaha's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marwaha practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rishu Marwaha is one of 16,751 internists in California
Internal medicine is Dr. Marwaha's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Marwaha is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Marwaha
Counts of internists 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. Rishu Marwaha billed Medicare for 828 services in 2024
CMS data shows 828 Medicare services from Dr. Marwaha across 9 procedure codes in 2024, for 244 Medicare patients. Medicare paid $78,506 for them. Every service was in an office.
Dr. Marwaha's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6192024: 6292%
- Other services
- 2023: 1552024: 1447%
- Tests and treatments
- 2023: 382024: 358%
- Lab and pathology
- 2023: 162024: 2025%
Dr. Marwaha compared with the California median for internists, 2024
- Dr. Marwaha
- California median
- Medicare services
- 828vs 3612.3 times
- Medicare patients
- 244vs 15162% above
- Part D claims
- 7,960vs 42118.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Marwaha'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Rishu Marwaha treated 244 Medicare patients in 2024, average age 77
CMS counts 244 Medicare patients who saw Dr. Marwaha in 2024. The largest group is 75 to 84, with 105 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.49, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marwaha's median patient age at 60, with 67% women.
Dr. Marwaha's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marwaha's Medicare patients by sex, 2024
- Women17873%
- Men6627%
Chronic conditions among Dr. Marwaha's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Diabetes56%
- Arthritis50%
- Ischemic heart disease29%
- Osteoporosis28%
- Anxiety23%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marwaha's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Rishu Marwaha wrote 8,585 Medicare Part D claims in 2024
In 2024, Dr. Marwaha wrote 8,585 Medicare Part D claims for 569 patients. 87% of them were for generic drugs. CMS names the drug for 7,960 of them, across 136 drugs with 11 or more claims each, at $629,994 in total drug cost. In 2023, CMS named 7,879 claims across 135 drugs.
Dr. Marwaha's Part D claims by kind of drug, 2024
- Generic7,499 claims87%
- Brand-name1,039 claims12%
- Other47 claims1%
Dr. Marwaha'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. Marwaha's Part D claims, 2024
- Opioids1%120 of 8,585 claims
- Antibiotics2%186 of 8,585 claims
- Antipsychotics, patients 65 and over0%23 of 8,585 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: 7,8792024: 7,9601%
Drugs named by CMS: 136 in 2024, 135 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. Rishu Marwaha scored 78 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 78 out of 100 for Dr. Marwaha for performance year 2024, reported as part of a group. Dr. Marwaha accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Marwaha as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Marwaha's MIPS scores, performance year 2024
- 78of 100Final score
- 40.9of 100Quality
- 75of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
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. Rishu Marwaha received $5,301 in industry payments from 2016 to 2025
CMS Open Payments shows 266 general payments to Dr. Marwaha from 38 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $559.
General payments to Dr. Marwaha by program year, 2016 to 2025
Companies that paid Dr. Marwaha the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Rishu Marwaha'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) |
| 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. Rishu Marwaha
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. Rishu Marwaha's NPI number?
Dr. Rishu Marwaha's NPI number is 1457490294. It was assigned on February 6, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Rishu Marwaha?
Dr. Rishu Marwaha is an internist in Fontana, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Rishu Marwaha practice?
Dr. Marwaha practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Marwaha's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. Dmand AI also links Dr. Marwaha to 3 group practices and clinics and 2 medical groups.
What is Dr. Rishu Marwaha's office phone number?
The practice phone on file for Dr. Marwaha is (909) 427-5000.
What is Dr. Rishu Marwaha's medical license number?
Dr. Marwaha holds California license A91336.
Which hospitals is Dr. Rishu Marwaha affiliated with?
Dr. Marwaha practices at Fontana Medical Center in Fontana, California.
What medical group is Dr. Rishu Marwaha part of?
Dr. Marwaha is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Marwaha to 2 more medical groups.
Does Dr. Rishu Marwaha accept Medicare?
Yes. CMS data shows Dr. Marwaha billed Medicare for 828 services in 2024, and Dr. Marwaha accepts Medicare assignment.
Does Dr. Rishu Marwaha offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Marwaha as offering telehealth services.
What is Dr. Rishu Marwaha's MIPS score?
Dr. Marwaha's MIPS final score for performance year 2024 is 78 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Rishu Marwaha see?
CMS counts 244 Medicare patients who saw Dr. Marwaha in 2024, with an average age of 77.
What services does Dr. Rishu Marwaha bill to Medicare?
In 2024, Dr. Marwaha's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
What drugs does Dr. Rishu Marwaha prescribe most?
In 2024 Medicare Part D data, Dr. Marwaha's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Losartan Potassium.
Has Dr. Rishu Marwaha received payments from drug or device companies?
CMS Open Payments shows $5,301 in general payments to Dr. Marwaha from 38 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Rishu Marwaha been practicing?
Dr. Marwaha graduated from medical school in 2001, 25 years ago.
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