Joseph W. Hassler, CRNA
Certified Registered Nurse Anesthetist · Washington, MO
Joseph W. Hassler, CRNA is a certified registered nurse anesthetist with a practice address in Washington, Missouri, and NPI 1881932960, issued on Jan 23, 2013. Check the license (Missouri 2013001823, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joseph W. Hassler
- Credential
- CRNA
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License number
- 2013001823 MO
Self-reported in NPPES; status is on the state search - Practice location
- 901 E 5TH St, Washington, MO 63090
- Phone
- (636) 239-8000
- Enumerated
- Jan 23, 2013
- Record last updated
- Nov 5, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130812000019); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 2,069 in Missouri → Look up another NPI →
Also registered at 901 E 5TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Suraj Kumar Alakkassery Kumaran, MDInternal Medicine Physician1568698306
- Lydia Archuleta, M.D.Internal Medicine Physician1205282639
- Fiona Aronberg, ACNPAcute Care Nurse Practitioner1396903506
- Sarah Becker, COTAOccupational Therapy Assistant1457563082
- Melissa Bedel, NPAcute Care Nurse Practitioner1326755505
- Rajasekhar Bhoda, M.DHospitalist Physician1144485798
Verify Joseph W. Hassler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2013001823Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Western Anesthesiology Associates IncWashington, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph W. Hassler among 2,069 certified registered nurse anesthetist records in Missouri
Joseph W. Hassler, CRNA is one of 2,069 certified registered nurse anesthetist records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 57% of them.
- NPI issued2013 · 57% of these records are older, 40% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2007 · median 2013 among the 1,508 with a school on file
- Record last updated2021 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 certified registered nurse anesthetist records list a practice address in Washington
They are 10 of the 533 NPPES records with a practice address in Washington, and 2,069 certified registered nurse anesthetist records in Missouri.
All 2,069 in Missouri → Every provider in Washington → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Katie Frillman, CRNAWashington, MO 630901497923874
- Christopher Galvin, DNP, CRNAWashington, MO 630901538843560
- Marilou Grainger, CRNAWashington, MO 630901376514414
- Virginia Hall, CRNAWashington, MO 630901881665925
- Leslie Jacobs, CRNAWashington, MO 630901952504292
- Terri Morgan, CRNAWashington, MO 630901720059587
- Virgina Painter, CRNAWashington, MO 630901780655415
- Thomas Piontek, CRNAWashington, MO 630901407837735
Common questions
What is Joseph W. Hassler, CRNA's NPI number?
Joseph W. Hassler, CRNA's National Provider Identifier (NPI) is 1881932960, issued on Jan 23, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Joseph W. Hassler, CRNA located?
The NPPES record lists a practice address at 901 E 5TH St, Washington, MO, 63090. Phone: (636) 239-8000. Providers update this record themselves, so call before visiting.
How can I verify Joseph W. Hassler, CRNA's license?
NPPES lists Missouri license number 2013001823, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity 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.