Esther Hwang, M.D.
Rheumatology Physician · Portland, OR
Esther Hwang, M.D. is a rheumatology physician with a practice address in Portland, Oregon, and NPI 1215035670, issued on Sep 20, 2006. Check the license (Oregon MD24530, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Esther Hwang
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- MD24530 OR
MD226040 OR
MD00042736 WA
Self-reported in NPPES; status is on the state search - Practice location
- 3550 N Interstate Ave, Portland, OR 97227
- Phone
- (800) 813-2000
- Enumerated
- Sep 20, 2006
- Record last updated
- Mar 4, 2026
- Medicaid IDs
- 227429 OR
8377558 WA - Medicare enrollment
- Enrolled (PECOS I20040408000707); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 3550 N Interstate Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brianna Abbey, MA, LPC, CADC 1Professional Counselor1710133665
- Kaylene Adams, RPHPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1669922035
- John Alferes, M.D.Internal Medicine Physician1679680805
- James Allen, M.M.F.T.Addiction (Substance Use Disorder) Counselor1821192279
- Brad Anderson, M.D.Addiction Medicine (Family Medicine) Physician1245323724
- Brenda Annotti, F.N.P.Gerontology Registered Nurse1255335295
Verify Esther Hwang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD24530Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,597 Medicare Part D claims for 260 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Methotrexate353 claims
- Hydroxychloroquine Sulfate267 claims
- Prednisone208 claims
- Folic Acid131 claims
- Allopurinol85 claims
- Sulfasalazine73 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.
Bills Medicare through 2 group practices
- Kaiser Foundation Health Plan OF The NorthwestPortland, OR
- The Vancouver Clinic Inc PSVancouver, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rheumatology Physician providers in Oregon
There are 101 rheumatology physician records in Oregon.
Other rheumatology physician records in Oregon
- Mary Abraham, MDCorvallis, OR1073876199
- Alfredo Aguirre, M.D.Portland, OR1184019267
- Elizabeth Anderson, MDPortland, OR1639632581
- Kathryn Baker, DOPortland, OR1245327295
- Andre Barkhuizen, M.D.Portland, OR1982639480
- Jennifer Barton, M.D.Portland, OR1306015995
- Mohamad Bittar, M.D.Portland, OR1942615240
- Kent Blakely, MDHermiston, OR1134222458
- Rosario Bonafede, MDPortland, OR1730125667
- Simona Braun, MDEugene, OR1972677045
Common questions
What is Esther Hwang, M.D.'s NPI number?
Esther Hwang, M.D.'s National Provider Identifier (NPI) is 1215035670, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Esther Hwang, M.D. located?
The NPPES record lists a practice address at 3550 N Interstate Ave, Portland, OR, 97227. Phone: (800) 813-2000. Providers update this record themselves, so call before visiting.
How can I verify Esther Hwang, M.D.'s license?
NPPES lists Oregon license number MD24530, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Esther Hwang, M.D. prescribe under Medicare Part D?
In 2024, Esther Hwang, M.D. had 1,597 Medicare Part D claims for 260 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.