Ritesh Parajuli, MD
Hematology & Oncology Physician · Orange, CA
Ritesh Parajuli, MD is a hematology & oncology physician with a practice address in Orange, California, and NPI 1710189543, issued on Jun 4, 2007. Check the license (California A142584, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ritesh Parajuli
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- A142584 CA
125051913 IL
Self-reported in NPPES; status is on the state search - Practice location
- 101 The City Dr S Bldg 23, Orange, CA 92868
- Phone
- (714) 456-8000
- Enumerated
- Jun 4, 2007
- Record last updated
- Jun 20, 2023
- Medicare enrollment
- Enrolled (PECOS I20160614001594); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 101 The City Dr S Bldg 23
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Annamarie Bedia, NPNurse Practitioner1780875005
- Elizabeth Brem, MDHematology & Oncology Physician1578883781
- Zahra Sadat Hamedi, MDHematology & Oncology Physician1053974451
- Krishna Hanubal, MDRadiation Oncology Physician1568154458
- Garrett Harada, MDRadiation Oncology Physician1831726330
- Jeremy Harris, MDRadiation Oncology Physician1922427053
Verify Ritesh Parajuli in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A142584Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
570 Medicare Part D claims for 107 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims. 11 claims were for opioids.
Most prescribed
- Anastrozole181 claims
- Exemestane44 claims
- Verzenio40 claims
- Alendronate Sodium35 claims
- Tamoxifen Citrate30 claims
- Ondansetron Hcl25 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): 100 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: $34,021.12
27 payments; by number, the most common kind was travel and lodging; the largest payer was Merck Sharp & Dohme LLC. The 8,560 providers of this specialty with any payment received $7,481.41 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
- UC RegentsOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ritesh Parajuli among 1,583 hematology & oncology physician records in California
Ritesh Parajuli, MD is one of 1,583 hematology & oncology physician records with a practice address in California. 83% 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 46% of them.
- NPI issued2007 · 46% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2012 · median 2003 among the 1,124 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Orange → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Timothy Byun, MDOrange, CA 928681871545012
- Warren Chow, MDOrange, CA 928681093822017
- Paul Coluzzi, M.D.Orange, CA 928681972563906
- Mihaela Cristea, MDOrange, CA 928681417050998
- Sam Huang, M.D.Orange, CA 928681841248812
- Tiberio Lindgren, MDOrange, CA 928681275585424
- John Link, MDOrange, CA 928681245281211
- Steven Lipkin, MDOrange, CA 928681134153547
Common questions
What is Ritesh Parajuli, MD's NPI number?
Ritesh Parajuli, MD's National Provider Identifier (NPI) is 1710189543, issued on Jun 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ritesh Parajuli, MD located?
The NPPES record lists a practice address at 101 The City Dr S Bldg 23, Orange, CA, 92868. Phone: (714) 456-8000. Providers update this record themselves, so call before visiting.
How can I verify Ritesh Parajuli, MD's license?
NPPES lists California license number A142584, 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 Ritesh Parajuli, MD prescribe under Medicare Part D?
In 2024, Ritesh Parajuli, MD had 570 Medicare Part D claims for 107 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Ritesh Parajuli, MD's MIPS final score?
The 2023 MIPS final score is 100 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.