Chuan-Jay Chen, MD
Emergency Medicine Physician · Saint Helena, CA
Chuan-Jay Chen, MD is an emergency medicine physician with a practice address in Saint Helena, California, and NPI 1205366457, issued on Jun 19, 2017. Check the license (California 171993, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chuan-Jay Chen
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 171993 CA
272210 MA
Self-reported in NPPES; status is on the state search - Practice location
- 10 Woodland RD, Saint Helena, CA 94574
- Phone
- (707) 963-6425
- Enumerated
- Jun 19, 2017
- Entity
- Type 1 · individual
Also registered at 10 Woodland RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nora Allen, RN, CNSAcute Care Clinical Nurse Specialist1710481932
- Stephen Banks, MDRadiation Oncology Physician1770680852
- Wendy Battistini, PTPhysical Therapist1215888276
- Julie Butulia, RDRegistered Dietitian1679376891
- Danny Cao, PHARMACISTPharmacist1447069570
- David Carelock, CRNACertified Registered Nurse Anesthetist1790773596
Verify Chuan-Jay Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 171993Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
38% more Medicare Part D claims than the average emergency medicine physician in 2024
490 Medicare Part D claims for 278 beneficiaries, against an average of 355 among the 49,029 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Cefdinir41 claims
- Ondansetron Odt30 claims
- Cefadroxil24 claims
- Prednisone23 claims
- Oxycodone Hcl22 claims
- Amoxicillin-Clavulanate Potass18 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 practice group's Medicare quality score for 2023: 86.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,116.00
1 payment, mostly consulting fee; the largest payer was Exo Imaging, Inc.. The 12,165 providers of this specialty with any payment received $1,340.71 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.
One hospital or facility affiliation
- Mills-Peninsula Emergency Medical Associates, IncBurlingame, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
6 emergency medicine physician records list a Saint Helena practice address
They are 6 of the 232 NPPES records with a Saint Helena practice address, and 7,133 emergency medicine physician records in California.
All 6 in Saint Helena → All 7,133 in California → Every provider in Saint Helena →
Other emergency medicine physician records in California
- Cooper Aakhus, MDStanford, CA1194351007
- Pyra Aarden, MDMartinez, CA1417058199
- Neal Aaron, D.O.Encinitas, CA1114283520
- Eric AaserudeWalnut Creek, CA1811491194
- Nader Abas, MDBarstow, CA1346288305
- Michael Abbo, MDNovato, CA1205819042
- Daniel Abbott, MDFullerton, CA1518907864
- Paul-Andre Abboud, M.D.Oakland, CA1710065503
- Mostafa Abdel-Hamid, MDStanford, CA1457918740
- Ashraf Abdel-KerimChino, CA1396961538
Common questions
What is Chuan-Jay Chen, MD's NPI number?
Chuan-Jay Chen, MD's National Provider Identifier (NPI) is 1205366457, issued on Jun 19, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Chuan-Jay Chen, MD located?
The NPPES record lists a practice address at 10 Woodland RD, Saint Helena, CA, 94574. Phone: (707) 963-6425. Providers update this record themselves, so call before visiting.
How can I verify Chuan-Jay Chen, MD's license?
NPPES lists California license number 171993, 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 Chuan-Jay Chen, MD prescribe under Medicare Part D?
In 2024, Chuan-Jay Chen, MD had 490 Medicare Part D claims for 278 beneficiaries; the average among emergency medicine physician prescribers was 355. Part D covers Medicare prescriptions only.
What is Chuan-Jay Chen, MD's Medicare quality score?
The 2023 MIPS final score is 86.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.