Caroline Arnold, MD
Emergency Medicine Physician · Walla Walla, WA
Caroline Arnold, MD is an emergency medicine physician with a practice address in Walla Walla, Washington, and NPI 1811492739, issued on Mar 25, 2018. Check the license (Washington MD61145396, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Caroline Arnold
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- MD61145396 WA
54507 KY
Self-reported in NPPES; status is on the state search - Practice location
- 401 W Poplar St, Walla Walla, WA 99362
- Phone
- (509) 897-3320
- Enumerated
- Mar 25, 2018
- Entity
- Type 1 · individual
Also registered at 401 W Poplar St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohammed Omar Ahmed, M.DStudent in an Organized Health Care Education/Training Program1659756443
- Jose AlanisEmergency Medicine Physician1720461502
- Christopher Aldrich, M.D.Anesthesiology Physician1891084562
- Tami Arias, RNDiabetes Educator Registered Nurse1760959514
- Alexandra Baker, DNPNurse Practitioner1306473202
- Bret Barnes, PHARMD., RPH.Pharmacist1609128875
Verify Caroline Arnold in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61145396Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3% fewer Medicare Part D claims than the average emergency medicine physician in 2024
346 Medicare Part D claims for 215 beneficiaries, against an average of 355 among the 49,029 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 46 claims were for opioids.
Most prescribed
- Oxycodone Hcl39 claims
- Cefdinir29 claims
- Azithromycin27 claims
- Ondansetron Odt26 claims
- Amoxicillin-Clavulanate Potass25 claims
- Cephalexin21 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.
One hospital or facility affiliation
- Providence Health And Services - WashingtonWalla Walla, WA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
21 emergency medicine physician records list a Walla Walla practice address
They are 21 of the 1,276 NPPES records with a Walla Walla practice address, and 1,396 emergency medicine physician records in Washington.
All 21 in Walla Walla → All 1,396 in Washington → Every provider in Walla Walla →
Other emergency medicine physician records in Washington
- Jeffrey AbrahamsGig Harbor, WA1306802558
- Amer Abu-KwaikYakima, WA1982308672
- Henry Ackerman, MDEverett, WA1649965682
- Colm Acuff, DOEnumclaw, WA1487605671
- Jan Adams, MDPort Angeles, WA1548221096
- Adeyinka Adedipe, M.D.Seattle, WA1942272984
- Robert Adelman, MDEdmonds, WA1376585414
- Angus Agnew, M.D.Tacoma, WA1497140206
- Meghan Ahearn, M.D.Port Angeles, WA1568754943
- Alec Ajhar, DOTacoma, WA1659930733
Common questions
What is Caroline Arnold, MD's NPI number?
Caroline Arnold, MD's National Provider Identifier (NPI) is 1811492739, issued on Mar 25, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Caroline Arnold, MD located?
The NPPES record lists a practice address at 401 W Poplar St, Walla Walla, WA, 99362. Phone: (509) 897-3320. Providers update this record themselves, so call before visiting.
How can I verify Caroline Arnold, MD's license?
NPPES lists Washington license number MD61145396, 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 Caroline Arnold, MD prescribe under Medicare Part D?
In 2024, Caroline Arnold, MD had 346 Medicare Part D claims for 215 beneficiaries; the average among emergency medicine physician prescribers was 355. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.