NPPES file of Aug 9, 2026

David Timothy Maxwell, MD

Emergency Medicine Physician · Walla Walla, WA

David Timothy Maxwell, MD is an emergency medicine physician with a practice address in Walla Walla, Washington, and NPI 1427261882, issued on May 8, 2007. Check the license 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
1427261882
Name
David Timothy Maxwell
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A97575 CA
Self-reported in NPPES; status is on the state search
Practice location
401 W Poplar St, Walla Walla, WA 99362
Phone
(509) 522-5802
Enumerated
May 8, 2007
Record last updated
Oct 25, 2023
Fax
(509) 522-5541
Medicare enrollment
Enrolled (PECOS I20080722000300); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 2005
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 401 W Poplar St

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

  1. Mohammed Omar Ahmed, M.DInternal Medicine Physician1659756443
  2. Jose AlanisEmergency Medicine Physician1720461502
  3. Christopher Aldrich, M.D.Anesthesiology Physician1891084562
  4. Tami Arias, RNDiabetes Educator Registered Nurse1760959514
  5. Caroline Arnold, MDEmergency Medicine Physician1811492739
  6. Alexandra Baker, DNPNurse Practitioner1306473202

Verify David Timothy Maxwell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical CommissionCheck 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.

2.3 times the Medicare Part D claims of the average emergency medicine physician in 2024

516 Medicare Part D claims for 328 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 123 claims were for opioids.

  1. David Maxwell516
  2. Specialty average226

Most prescribed

  1. Hydrocodone-Acetaminophen56 claims
  2. Cephalexin50 claims
  3. Ondansetron Odt41 claims
  4. Oxycodone Hcl41 claims
  5. Prednisone38 claims
  6. Cefdinir27 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.

Bills Medicare through one group practice

  1. Providence Health And Services - WashingtonWalla Walla, WA

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

David Timothy Maxwell among 1,459 emergency medicine physician records in Washington

David Timothy Maxwell, MD is one of 1,459 emergency medicine physician records with a practice address in Washington. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.

  • NPI issued2007 · 45% of these records are older, 44% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2005 · median 2010 among the 851 with a school on file
  • Record last updated2023 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

21 emergency medicine physician records list a practice address in Walla Walla

They are 21 of the 1,276 NPPES records with a practice address in Walla Walla, and 1,459 emergency medicine physician records in Washington.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Joilo Barbosa, M.D.Walla Walla, WA 993621235243155
  2. Robert Billingsley, MDWalla Walla, WA 993621487668893
  3. Philip Green, MDWalla Walla, WA 993621104867373
  4. Christopher Jenkins, DOWalla Walla, WA 993621962495994
  5. Robert Johnson, MD00041003Walla Walla, WA 993621730262726
  6. Aaron Jones, MDWalla Walla, WA 993621265446678
  7. Michael McMurtry, D.O.Walla Walla, WA 993621750367579
  8. Elizabeth McMurtry, D.O.Walla Walla, WA 993621568431567

Common questions

What is David Timothy Maxwell, MD's NPI number?

David Timothy Maxwell, MD's National Provider Identifier (NPI) is 1427261882, issued on May 8, 2007. An NPI identifies a provider in billing; it is not a license.

Where is David Timothy Maxwell, MD located?

The NPPES record lists a practice address at 401 W Poplar St, Walla Walla, WA, 99362. Phone: (509) 522-5802. Providers update this record themselves, so call before visiting.

How can I verify David Timothy Maxwell, MD's license?

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 David Timothy Maxwell, MD prescribe under Medicare Part D?

In 2024, David Timothy Maxwell, MD had 516 Medicare Part D claims for 328 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.