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
8 nearest rheumatology physician records → All 101 in Oregon → Look up another NPI →
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).
Esther Hwang among 101 rheumatology physician records in Oregon
Esther Hwang, M.D. is one of 101 rheumatology physician records with a practice address in Oregon. 73% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 50% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2000 · median 2004 among the 65 with a school on file
- Record last updated2026 · 60% 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 Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Oregon
There are 101 rheumatology physician records in Oregon.
All 101 in Oregon → Every provider in Portland → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Darshika Goswami, M.D.Portland, OR 972271083025464
- Brian Greenberg, M.D.Portland, OR 972271609074723
- Lee Anna Jones, MDPortland, OR 972271063532422
- Joji Kappes, M.D.Portland, OR 972271386758035
- Christine McBurney, M.D.Portland, OR 972271326230889
- William Melcher, M.D.Portland, OR 972271609889070
- Jennifer SimpsonPortland, OR 972271255445425
- Kathryn Baker, DOPortland, OR 972251245327295
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.