Eui San Cha, M.D.
Hospitalist Physician · Orange, CA
Eui San Cha, M.D. is a hospitalist physician with a practice address in Orange, California, and NPI 1497047757, issued on May 5, 2011. Check the license (California A124833, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Eui San Cha
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A124833 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2501 E Chapman Ave Ste 300, Orange, CA 92869
- Phone
- (714) 771-8000
- Enumerated
- May 5, 2011
- Record last updated
- Oct 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140721000000); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Verify Eui San Cha in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124833Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% fewer Medicare Part D claims than the average hospitalist physician in 2024
445 Medicare Part D claims for 194 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass25 claims
- Cefdinir25 claims
- Prednisone22 claims
- Pantoprazole Sodium21 claims
- Azithromycin18 claims
- Hydrocodone-Acetaminophen18 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.
Industry payments in 2024: $137.65
5 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 7,324 providers of this specialty with any payment received $494.84 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
- Providence Medical FoundationOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eui San Cha among 3,099 hospitalist physician records in California
Eui San Cha, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 47% of them.
- NPI issued2011 · 47% of these records are older, 49% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2011 · median 2010 among the 2,505 with a school on file
- Record last updated2020 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Orange → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Anwar Abdelhadi, M.D.Orange, CA 928691093784191
- Jason Caberto, D.O.Orange, CA 928691144592924
- Roger Chang, M.D.Orange, CA 928691730158239
- James Roh, MDOrange, CA 928691033222500
- Frederick Chua, M.D.Orange, CA 928681477180701
- Varun Dang, MDOrange, CA 928681043888274
- Sean Dornbush, DOOrange, CA 928681538798236
- Paul EliasOrange, CA 928681730765157
Common questions
What is Eui San Cha, M.D.'s NPI number?
Eui San Cha, M.D.'s National Provider Identifier (NPI) is 1497047757, issued on May 5, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Eui San Cha, M.D. located?
The NPPES record lists a practice address at 2501 E Chapman Ave Ste 300, Orange, CA, 92869. Phone: (714) 771-8000. Providers update this record themselves, so call before visiting.
How can I verify Eui San Cha, M.D.'s license?
NPPES lists California license number A124833, 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 Eui San Cha, M.D. prescribe under Medicare Part D?
In 2024, Eui San Cha, M.D. had 445 Medicare Part D claims for 194 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
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.