NPPES file of Aug 9, 2026

Teresa S. Chen, O.D.

Optometrist · Portland, OR

Teresa S. Chen, O.D. is an optometrist with a practice address in Portland, Oregon, and NPI 1124307871, issued on Aug 12, 2011. Check the license (Oregon 3588AT, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1124307871
Name
Teresa S. Chen
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License numbers
3588AT OR
14270 CA
OD60636151 WA
Self-reported in NPPES; status is on the state search
Practice location
19500 SE Stark St, Portland, OR 97233
Phone
(503) 669-3900
Enumerated
Aug 12, 2011
Record last updated
May 12, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20160318001430); accepts Medicare assignment
Medical or professional school
Pennsylvania College Of Optometry, 2011
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 19500 SE Stark St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Merrill Ahrens, MDInternal Medicine Physician1194839225
  2. Christopher Alaka, RPH, C.C.R.APharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1083982706
  3. Nicolle AsencioFamily Nurse Practitioner1225753692
  4. Richard Babal, MANAGEROptician1295824282
  5. Thomas Beaver, M.D.Internal Medicine Physician1215019112
  6. Jennifer Bishop, MDInternal Medicine Physician1548284557

Verify Teresa S. Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oregon board licenses this profession
    Search for license 3588AT
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Oregon license search

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48% fewer Medicare Part D claims than the average optometrist in 2024

144 Medicare Part D claims for 56 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Teresa Chen144
  2. Specialty average277

Most prescribed

  1. Latanoprost64 claims
  2. Cyclosporine17 claims
  3. Erythromycin15 claims
  4. Neomycin-Polymyxin-Dexameth12 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 one group practice

  1. Kaiser Foundation Health Plan OF The NorthwestPortland, OR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Teresa S. Chen among 944 optometrist records in Oregon

Teresa S. Chen, O.D. is one of 944 optometrist records with a practice address in Oregon. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 64% of them.

  • NPI issued2011 · 64% of these records are older, 34% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2011 · median 2010 among the 552 with a school on file
  • Record last updated2016 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in Oregon

There are 944 optometrist records in Oregon.

The 8 optometrist records with the nearest ZIP codes

  1. Amara Callahan, O.D.Portland, OR 972331437268141
  2. Phu Hoang, O.D.Portland, OR 972331326473505
  3. Vanessa HuaPortland, OR 972331386412989
  4. Abbie Jordan, O.D.Portland, OR 972331275616930
  5. Travis Lafayette, ODPortland, OR 972331871606293
  6. Tuan Nguyen, ODPortland, OR 972331194737916
  7. Jared Nuffer, O.D.Portland, OR 972331225147408
  8. Bruce Parker, O.D.Portland, OR 972331679586168

Common questions

What is Teresa S. Chen, O.D.'s NPI number?

Teresa S. Chen, O.D.'s National Provider Identifier (NPI) is 1124307871, issued on Aug 12, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Teresa S. Chen, O.D. located?

The NPPES record lists a practice address at 19500 SE Stark St, Portland, OR, 97233. Phone: (503) 669-3900. Providers update this record themselves, so call before visiting.

How can I verify Teresa S. Chen, O.D.'s license?

NPPES lists Oregon license number 3588AT, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.

How much does Teresa S. Chen, O.D. prescribe under Medicare Part D?

In 2024, Teresa S. Chen, O.D. had 144 Medicare Part D claims for 56 beneficiaries; the average among optometrist prescribers was 277. 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.