NPPES file of Aug 9, 2026

Carl Ostergren, DDS

General Practice Dentistry · Seattle, WA

Carl Ostergren, DDS is a general practice dentistry with a practice address in Seattle, Washington, and NPI 1417300187, issued on Jul 19, 2016. Check the license (Washington DE60665085, as entered in NPPES) with the Washington 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
1417300187
Name
Carl Ostergren
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
DE60665085 WA
Self-reported in NPPES; status is on the state search
Practice location
8511 Greenwood Ave N, Seattle, WA 98103
Phone
(206) 782-8223
Enumerated
Jul 19, 2016
Record last updated
Jul 19, 2016 (not updated in 10 years: call before relying on the address or phone)
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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Also registered at 8511 Greenwood Ave N

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

  1. Jonathan An, D.D.SDentist1285017574
  2. Lalita Angkanawaraphan, DDS, MSDGeneral Practice Dentistry1841727104
  3. Thinh Ho, DDSGeneral Practice Dentistry1659544476
  4. Jeffrey Knudson, D.D.SGeneral Practice Dentistry1316250608
  5. Jordan Wiley, DDSGeneral Practice Dentistry1942841341

Verify Carl Ostergren in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this profession
    Search for license DE60665085
    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 Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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36% fewer Medicare Part D claims than the average general practice dentistry in 2024

53 Medicare Part D claims for 35 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. 13 claims were for opioids.

  1. Carl Ostergren53
  2. Specialty average83

Most prescribed

  1. Amoxicillin28 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.

Carl Ostergren among 3,196 general practice dentistry records in Washington

Carl Ostergren, DDS is one of 3,196 general practice dentistry records with a practice address in Washington. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 80% of them.

  • NPI issued2016 · 80% of these records are older, 19% newer
  • In a Medicare fileYes · 57% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2016 · 72% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Dentistry providers in Washington

There are 3,196 general practice dentistry records in Washington.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Kevin Biederman, D.D.S.Seattle, WA 981031336205640
  2. Li-Jen Chang, D.D.S.Seattle, WA 981031073607107
  3. Linda Fukuda, DDSSeattle, WA 981031427163179
  4. Mavash Khajavi-Harvey, DMDSeattle, WA 981031891866398
  5. Sunny Kim, D.D.S.Seattle, WA 981031114070810
  6. Samantha Lee-Chiu, DDSSeattle, WA 981031982765590
  7. Donald Lewis, D.D.S.Seattle, WA 981031649299413
  8. Connie Manuel, D.D.S.Seattle, WA 981031033262803

Common questions

What is Carl Ostergren, DDS's NPI number?

Carl Ostergren, DDS's National Provider Identifier (NPI) is 1417300187, issued on Jul 19, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Carl Ostergren, DDS located?

The NPPES record lists a practice address at 8511 Greenwood Ave N, Seattle, WA, 98103. Phone: (206) 782-8223. Providers update this record themselves, so call before visiting.

How can I verify Carl Ostergren, DDS's license?

NPPES lists Washington license number DE60665085, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does Carl Ostergren, DDS prescribe under Medicare Part D?

In 2024, Carl Ostergren, DDS had 53 Medicare Part D claims for 35 beneficiaries; the average among general practice dentistry prescribers was 83. 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.