Emy Caitlin Chen, MD
Rheumatology Physician · Arcadia, CA
Emy Caitlin Chen, MD is a rheumatology physician with a practice address in Arcadia, California, and NPI 1689741910, issued on Nov 30, 2006. Check the license (California A70838, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Emy Caitlin Chen
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A70838 CA
Self-reported in NPPES; status is on the state search - Practice location
- 488 E Santa Clara St, Arcadia, CA 91006
- Phone
- (626) 357-6808
- Enumerated
- Nov 30, 2006
- Record last updated
- Nov 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080606000655); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 488 E Santa Clara St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathy Lu, NPNurse Practitioner1366280471
- Samuel Mourani, M.D.Specialist1952303414
- Soon Min Tan, MDRheumatology Physician1861578569
- Kozur Vazagov, ODOptometrist1851476865
Verify Emy Caitlin Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A70838Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,867 Medicare Part D claims for 216 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 113 claims were for opioids.
Most prescribed
- Prednisone80 claims
- Hydroxychloroquine Sulfate78 claims
- Methotrexate60 claims
- Tizanidine Hcl53 claims
- Tramadol Hcl50 claims
- Meloxicam46 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): 76.4 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: $656.89
27 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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
- City OF Hope Medical FoundationDuarte, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emy Caitlin Chen among 926 rheumatology physician records in California
Emy Caitlin Chen, MD is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1998 · median 2003 among the 641 with a school on file
- Record last updated2020 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Arcadia → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Massoud Soleimani, MDArcadia, CA 910061831147156
- Soon Min Tan, MDArcadia, CA 910061861578569
- Stanley Alexander, MDArcadia, CA 910071497814685
- Talha Khawar, M.D.La Canada, CA 910111699089508
- Tracy Nguyen-Oghalai, MDLa Canada, CA 910111013078229
- Dan La, MDTujunga, CA 910421437178274
- David Brown, MDPasadena, CA 911051689710055
- Stratos Christianakis, M.D.Pasadena, CA 911051831114008
Common questions
What is Emy Caitlin Chen, MD's NPI number?
Emy Caitlin Chen, MD's National Provider Identifier (NPI) is 1689741910, issued on Nov 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Emy Caitlin Chen, MD located?
The NPPES record lists a practice address at 488 E Santa Clara St, Arcadia, CA, 91006. Phone: (626) 357-6808. Providers update this record themselves, so call before visiting.
How can I verify Emy Caitlin Chen, MD's license?
NPPES lists California license number A70838, 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 Emy Caitlin Chen, MD prescribe under Medicare Part D?
In 2024, Emy Caitlin Chen, MD had 1,867 Medicare Part D claims for 216 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Emy Caitlin Chen, MD's MIPS final score?
The 2023 MIPS final score is 76.4 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.