NPPES file of Aug 9, 2026

Nathaniel Wise Clark, DO

Emergency Medical Services (Emergency Medicine) Physician · Seattle, WA

Nathaniel Wise Clark, DO is an emergency medical services (emergency medicine) physician with a practice address in Seattle, Washington, and NPI 1144291360, issued on Jan 27, 2006. Check the license (Washington OP00002070, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1144291360
Name
Nathaniel Wise Clark
Credential
DO
Primary taxonomy
Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
License number
OP00002070 WA
Self-reported in NPPES; status is on the state search
Practice location
201 16TH Ave E, Seattle, WA 98112
Phone
(206) 326-3000
Enumerated
Jan 27, 2006
Record last updated
Mar 31, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(206) 326-2785
Medicare enrollment
Enrolled (PECOS I20070719000287); accepts Medicare assignment
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.
Download card Updates feed

Also registered at 201 16TH Ave E

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

  1. Farangis Abab, RNHome Health Registered Nurse1639473408
  2. Joonis Abdulkhader, M.D.Family Medicine Physician1518154335
  3. Bashir Abumenjel, REGISTERED NURSEHome Health Registered Nurse1275352510
  4. Stephanie Abutin, ,MS, CCC-SLPSpeech-Language Pathologist1902522444
  5. Christopher Adrig, PA-CPhysician Assistant1184606089
  6. Sanjay Agarwal, MD, FCCP, FAASMSleep Medicine (Internal Medicine) Physician1477523249

Verify Nathaniel Wise Clark in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license OP00002070
    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

46% fewer Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024

159 Medicare Part D claims for 133 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. 20 claims were for opioids.

  1. Nathaniel Clark159
  2. Specialty average292

Most prescribed

  1. Cefuroxime25 claims
  2. Prednisone17 claims
  3. Hydrocodone-Acetaminophen15 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: $1,400.00

2 payments; by number, the most common kind was consulting fee; the largest payer was Verathon Inc. The 489 providers of this specialty with any payment received $337.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nathaniel Clark$1,400.00
  2. Specialty average$337.59

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

Bills Medicare through one group practice

  1. Kaiser Foundation Health Plan OF WashingtonSeattle, WA

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

Nathaniel Wise Clark among 91 emergency medical services (emergency medicine) physician records in Washington

Nathaniel Wise Clark, DO is one of 91 emergency medical services (emergency medicine) physician records with a practice address in Washington. 64% 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 0% of them.

  • NPI issued2006 · 0% of these records are older, 35% newer
  • In a Medicare fileYes · 64% of these records are
  • In the CMS Doctors and Clinicians fileYes · 46% of these records are
  • Graduated2004 · median 1999 among the 42 with a school on file
  • Record last updated2021 · 74% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medical Services (Emergency Medicine) Physician providers in Washington

There are 91 emergency medical services (emergency medicine) physician records in Washington.

The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes

  1. Katherine Pryde, MDSeattle, WA 981121134150923
  2. Lisa Wilson, MDSeattle, WA 981121083877559
  3. Anthony Warfield, EMTSeattle, WA 981091740713627
  4. Arthur French, M.D.Seattle, WA 981081184843229
  5. David Brook, MDSeattle, WA 981071982770947
  6. John Hemmen, MDSeattle, WA 981071659329605
  7. Mark Scott, DOSeattle, WA 981071619925625
  8. Stephanie Cooper, MDSeattle, WA 981041962468934

Common questions

What is Nathaniel Wise Clark, DO's NPI number?

Nathaniel Wise Clark, DO's National Provider Identifier (NPI) is 1144291360, issued on Jan 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nathaniel Wise Clark, DO located?

The NPPES record lists a practice address at 201 16TH Ave E, Seattle, WA, 98112. Phone: (206) 326-3000. Providers update this record themselves, so call before visiting.

How can I verify Nathaniel Wise Clark, DO's license?

NPPES lists Washington license number OP00002070, 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.

How much does Nathaniel Wise Clark, DO prescribe under Medicare Part D?

In 2024, Nathaniel Wise Clark, DO had 159 Medicare Part D claims for 133 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. 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.