NPPES file of Aug 9, 2026

Nellie Chung, OD

Optometrist · Portland, OR

Nellie Chung, OD is an optometrist with a practice address in Portland, Oregon, and NPI 1588216519, issued on Jul 10, 2019. Check the license (Oregon ATI4496, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588216519
Name
Nellie Chung
Credential
OD
Primary taxonomy
Optometrist 152W00000X
License numbers
ATI4496 OR
OD60961378 WA
Self-reported in NPPES; status is on the state search
Practice location
1046 NW Johnson St, Portland, OR 97209
Phone
(503) 944-5567
Enumerated
Jul 10, 2019
Record last updated
May 7, 2023
Fax
(503) 944-5471
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Nellie Chung 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 ATI4496
    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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96% fewer Medicare Part D claims than the average optometrist in 2024

12 Medicare Part D claims, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 92% of claims.

  1. Nellie Chung12
  2. Specialty average277

Most prescribed

  1. Latanoprost11 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 MIPS final score for 2023 (Medicare payment program): 92.7 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.

  1. Qualityout of 100 · 30% of the final score99.2
  2. Costout of 100 · 30%76.4
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $273.36

6 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nellie Chung$273.36
  2. Specialty average$769.99

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Nellie Chung among 944 optometrist records in Oregon

Nellie Chung, OD 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 2019, is newer than 80% of them.

  • NPI issued2019 · 80% of these records are older, 17% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileNo · 58% of these records are
  • Record last updated2023 · 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. June Cheng, ODPortland, OR 972091356029029
  2. Heather Cook, ODPortland, OR 972091710969894
  3. Rory Cook, ODPortland, OR 972091790767879
  4. Johnny Duong, O.D.Portland, OR 972091811370968
  5. Jeremy Graziano, O.D.Portland, OR 972091467587584
  6. Ami Halvorson, O.D.Portland, OR 972091447457452
  7. Weon Jun, O.D.Portland, OR 972091811925134
  8. Helen Kim, O.D.Portland, OR 972091730343880

Common questions

What is Nellie Chung, OD's NPI number?

Nellie Chung, OD's National Provider Identifier (NPI) is 1588216519, issued on Jul 10, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Nellie Chung, OD located?

The NPPES record lists a practice address at 1046 NW Johnson St, Portland, OR, 97209. Phone: (503) 944-5567. Providers update this record themselves, so call before visiting.

How can I verify Nellie Chung, OD's license?

NPPES lists Oregon license number ATI4496, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.

How much does Nellie Chung, OD prescribe under Medicare Part D?

In 2024, Nellie Chung, OD had 12 Medicare Part D claims; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

What is Nellie Chung, OD's MIPS final score?

The 2023 MIPS final score is 92.7 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), 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.