NPPES file of Aug 9, 2026

John Charles Greenert, M.D., M.P.H.

Neurology Physician · Seattle, WA

John Charles Greenert, M.D., M.P.H. is a neurology physician with a practice address in Seattle, Washington, and NPI 1043625551, issued on Jun 23, 2014. Check the license (Washington MD61345144, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1043625551
Name
John Charles Greenert
Credential
M.D., M.P.H.
Primary taxonomy
Neurology Physician 2084N0400X
License numbers
MD61345144 WA
10809968-1205 UT
Self-reported in NPPES; status is on the state search
Practice location
1100 9TH Ave, Seattle, WA 98101
Phone
(206) 341-0860
Enumerated
Jun 23, 2014
Record last updated
Oct 18, 2022
Fax
(206) 341-1401
Medicare enrollment
Enrolled (PECOS I20220907002594); accepts Medicare assignment
Medical or professional school
University Of Oklahoma College Of Medicine, 2014
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 1100 9TH Ave

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

  1. Barry Aaronson, MDHospitalist Physician1952418345
  2. David Aboulafia, MDHematology & Oncology Physician1043269392
  3. Deborah Abrams, M.D.Hematology & Oncology Physician1902974835
  4. Alvin Aceron, ARNPAdult Health Nurse Practitioner1639488562
  5. Ream AdeebAdult Health Nurse Practitioner1760868855
  6. Steven Adler, MDDiagnostic Ultrasound Physician1639108046

Verify John Charles Greenert in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD61345144
    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
Open 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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One hospital affiliation

  1. Virginia Mason Medical CenterSeattle, WA · Acute Care Hospitals5 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

John Charles Greenert among 489 neurology physician records in Washington

John Charles Greenert, M.D., M.P.H. is one of 489 neurology physician records with a practice address in Washington. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 71% of them.

  • NPI issued2014 · 71% of these records are older, 25% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2014 · median 2007 among the 351 with a school on file
  • Record last updated2022 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in Washington

There are 489 neurology physician records in Washington.

The 8 neurology physician records with the nearest ZIP codes

  1. Anik Amin, M.D.Seattle, WA 981011497040703
  2. Emma Burbank, M.D.Seattle, WA 981011457562621
  3. Dhaval Desai, M.D.Seattle, WA 981011760800932
  4. Mariko Kita, MDSeattle, WA 981011326061748
  5. Lucas McCarthy, MDSeattle, WA 981011053624502
  6. Michael Mercurio, MDSeattle, WA 981011316202005
  7. Allen Nielsen, MDSeattle, WA 981011780721068
  8. John Roberts, MDSeattle, WA 981011396858551

Common questions

What is John Charles Greenert, M.D., M.P.H.'s NPI number?

John Charles Greenert, M.D., M.P.H.'s National Provider Identifier (NPI) is 1043625551, issued on Jun 23, 2014. An NPI identifies a provider in billing; it is not a license.

Where is John Charles Greenert, M.D., M.P.H. located?

The NPPES record lists a practice address at 1100 9TH Ave, Seattle, WA, 98101. Phone: (206) 341-0860. Providers update this record themselves, so call before visiting.

How can I verify John Charles Greenert, M.D., M.P.H.'s license?

NPPES lists Washington license number MD61345144, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.