Ruby Chien, MD
Internal Medicine Physician · Orange, CA
Ruby Chien, MD is an internal medicine physician with a practice address in Orange, California, and NPI 1417650227, issued on Mar 22, 2023. Check the license (California A201192, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ruby Chien
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A201192 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 The City Dr S Ste 400, Orange, CA 92868
- Phone
- (714) 456-5691
- Enumerated
- Mar 22, 2023
- Record last updated
- Mar 23, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 101 The City Dr S Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joshua AbataStudent in an Organized Health Care Education/Training Program1437899697
- Mark Abdelnour, MDStudent in an Organized Health Care Education/Training Program1194527812
- Shant AbrhamianStudent in an Organized Health Care Education/Training Program1033911219
- Salam AllahwerdyStudent in an Organized Health Care Education/Training Program1124767470
- Lily Allison, MDStudent in an Organized Health Care Education/Training Program1063272441
- Charissa Alo, MDStudent in an Organized Health Care Education/Training Program1801699335
Verify Ruby Chien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A201192Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
66 Medicare Part D claims for 27 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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: $17.28
1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Ruby Chien among 17,696 internal medicine physician records in California
Ruby Chien, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 98% of them.
- NPI issued2023 · 98% of these records are older, under 1% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
187 internal medicine physician records list a practice address in Orange
They are 187 of the 13,245 NPPES records with a practice address in Orange, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Orange → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jane Abdelhadi, M.D.Orange, CA 928681124097100
- Edwin Alexander, M.D.Orange, CA 928681659315752
- Romilla Batra, MDOrange, CA 928681871545038
- Ronald Daoud, M.D.Orange, CA 928681093732992
- Nadia Elihu, M.D.Orange, CA 928681659340156
- Roy Herndon, M.D.Orange, CA 928681417928383
- Deepti Pandita, MDOrange, CA 928681255358727
- Maryam Rahimi, MDOrange, CA 928681043268949
Common questions
What is Ruby Chien, MD's NPI number?
Ruby Chien, MD's National Provider Identifier (NPI) is 1417650227, issued on Mar 22, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Ruby Chien, MD located?
The NPPES record lists a practice address at 101 The City Dr S Ste 400, Orange, CA, 92868. Phone: (714) 456-5691. Providers update this record themselves, so call before visiting.
How can I verify Ruby Chien, MD's license?
NPPES lists California license number A201192, 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 Ruby Chien, MD prescribe under Medicare Part D?
In 2024, Ruby Chien, MD had 66 Medicare Part D claims for 27 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.