NPPES file of Aug 9, 2026

Darren S. Greenhalgh, DDS

General Practice Dentistry · Mill Creek, WA

Darren S. Greenhalgh, DDS is a general practice dentistry with a practice address in Mill Creek, Washington, and NPI 1891868451, issued on Nov 15, 2006. Check the license (Washington DE00008787, 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
1891868451
Name
Darren S. Greenhalgh
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
DE00008787 WA
Self-reported in NPPES; status is on the state search
Practice location
15130 Main St, Mill Creek, WA 98012
Phone
(425) 357-6400
Enumerated
Nov 15, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(425) 357-6068
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 Darren S. Greenhalgh 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 DE00008787
    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

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59% fewer Medicare Part D claims than the average general practice dentistry in 2024

34 Medicare Part D claims for 24 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Darren Greenhalgh34
  2. Specialty average83

Most prescribed

  1. Penicillin V Potassium15 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.

Industry payments in 2024: $111.96

4 payments; by number, the most common kind was food and beverage; the largest payer was Align Technology, Inc. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Darren Greenhalgh$111.96
  2. Specialty average$597.01

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

Darren S. Greenhalgh among 3,196 general practice dentistry records in Washington

Darren S. Greenhalgh, 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 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 59% 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 updated2007 · 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).

24 general practice dentistry records list a practice address in Mill Creek

They are 24 of the 554 NPPES records with a practice address in Mill Creek, and 3,196 general practice dentistry records in Washington.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Arash Aflatooni, DDSMill Creek, WA 980121770570681
  2. Linda Cirtaut, D.D.S., P.S.Mill Creek, WA 980121245309855
  3. Dwight Cottrill, D.D.S.Mill Creek, WA 980121164453650
  4. Cason Culberson, DDSMill Creek, WA 980121679796056
  5. William Feldner, D.D.S.Mill Creek, WA 980121851454672
  6. Roger Flake, DDSMill Creek, WA 980121720104698
  7. Gary Heyamoto, DDSBothell, WA 980121871509794
  8. Steve Hwang, D.D.S.Bothell, WA 980121063593606

Common questions

What is Darren S. Greenhalgh, DDS's NPI number?

Darren S. Greenhalgh, DDS's National Provider Identifier (NPI) is 1891868451, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Darren S. Greenhalgh, DDS located?

The NPPES record lists a practice address at 15130 Main St, Mill Creek, WA, 98012. Phone: (425) 357-6400. Providers update this record themselves, so call before visiting.

How can I verify Darren S. Greenhalgh, DDS's license?

NPPES lists Washington license number DE00008787, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does Darren S. Greenhalgh, DDS prescribe under Medicare Part D?

In 2024, Darren S. Greenhalgh, DDS had 34 Medicare Part D claims for 24 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.