Om P. Chaurasia, MD
Gastroenterology Physician · Mission Viejo, CA
Om P. Chaurasia, MD is a gastroenterology physician with a practice address in Mission Viejo, California, and NPI 1528136702, issued on Dec 4, 2006. Check the license (California A50815, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Om P. Chaurasia
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A50815 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26421 Crown Valley Pkwy, Mission Viejo, CA 92691
- Phone
- (949) 365-8836
- Enumerated
- Dec 4, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 365-8837
- Medicare enrollment
- Enrolled (PECOS I20101221001197); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Verify Om P. Chaurasia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A50815Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average gastroenterology physician in 2024
751 Medicare Part D claims for 345 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Omeprazole354 claims
- Sod Sulf-Potass Sulf-Mag Sulf157 claims
- Mesalamine41 claims
- Sutab22 claims
- Pantoprazole Sodium21 claims
- Gavilyte-G20 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $810.17
36 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- OM P. Chaurasia, MD, Inc.Mission Viejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Om P. Chaurasia among 2,140 gastroenterology physician records in California
Om P. Chaurasia, MD is one of 2,140 gastroenterology 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1983 · median 2002 among the 1,538 with a school on file
- Record last updated2007 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Mission Viejo → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ronald Adamany, M.D.Mission Viejo, CA 926911992780688
- Wanjun Bae, M.D.Mission Viejo, CA 926911457433906
- Edward Block, M.D.Mission Viejo, CA 926911811973860
- Elmer Chang, M.D.Mission Viejo, CA 926911912083353
- Jack Feng, M.D.Mission Viejo, CA 926911710964481
- Shahram Javaheri, M.D.Mission Viejo, CA 926911497861439
- Jae Lee, M.D.Mission Viejo, CA 926911194702563
- Nader Mirhoseni, M.D.Mission Viejo, CA 926911588645964
Common questions
What is Om P. Chaurasia, MD's NPI number?
Om P. Chaurasia, MD's National Provider Identifier (NPI) is 1528136702, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Om P. Chaurasia, MD located?
The NPPES record lists a practice address at 26421 Crown Valley Pkwy, Mission Viejo, CA, 92691. Phone: (949) 365-8836. Providers update this record themselves, so call before visiting.
How can I verify Om P. Chaurasia, MD's license?
NPPES lists California license number A50815, 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 Om P. Chaurasia, MD prescribe under Medicare Part D?
In 2024, Om P. Chaurasia, MD had 751 Medicare Part D claims for 345 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Om P. Chaurasia, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.