William Slagle, MD
Emergency Medicine Physician · Tacoma, WA
William Slagle, MD is an emergency medicine physician with a practice address in Tacoma, Washington, and NPI 1043716418, issued on Apr 3, 2018. Check the license (Washington MD61126162, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- William Slagle
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD61126162 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2420 S State St, Tacoma, WA 98405
- Phone
- (510) 867-2515
- Enumerated
- Apr 3, 2018
- Record last updated
- Jan 21, 2026
- Fax
- (510) 867-2515
- Medicare enrollment
- Enrolled (PECOS I20230802001903); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,459 in Washington → Look up another NPI →
Also registered at 2420 S State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jessica Kelly, ARNPFamily Nurse Practitioner1144897596
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- Andrew Osborne, PACPhysician Assistant1659004034
Verify William Slagle in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61126162Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average emergency medicine physician in 2024
366 Medicare Part D claims for 233 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. 45 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen38 claims
- Amoxicillin-Clavulanate Potass28 claims
- Ondansetron Odt27 claims
- Cephalexin24 claims
- Doxycycline Hyclate21 claims
- Methocarbamol19 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 89.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Cep America LLCEdmonds, WA
- Kaiser Foundation Health Plan OF WashingtonTacoma, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Slagle among 1,459 emergency medicine physician records in Washington
William Slagle, 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 2018, is newer than 85% of them.
- NPI issued2018 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2018 · median 2010 among the 851 with a school on file
- Record last updated2026 · 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).
167 emergency medicine physician records list a practice address in Tacoma
They are 167 of the 13,715 NPPES records with a practice address in Tacoma, and 1,459 emergency medicine physician records in Washington.
All 1,459 in Washington → Every provider in Tacoma → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Keith Batts, MDTacoma, WA 984051245209949
- Adam Fox, DOTacoma, WA 984051477592616
- James Fulcher, MDTacoma, WA 984051205875754
- Mark Harris, MDTacoma, WA 984051699714295
- Benjamin Harrison, MDTacoma, WA 984051346210895
- Christopher Henry, MDTacoma, WA 984051326087925
- Giao Kaplan, MDTacoma, WA 984051588603153
- Jorge Llera, MDTacoma, WA 984051669428108
Common questions
What is William Slagle, MD's NPI number?
William Slagle, MD's National Provider Identifier (NPI) is 1043716418, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.
Where is William Slagle, MD located?
The NPPES record lists a practice address at 2420 S State St, Tacoma, WA, 98405. Phone: (510) 867-2515. Providers update this record themselves, so call before visiting.
How can I verify William Slagle, MD's license?
NPPES lists Washington license number MD61126162, 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 William Slagle, MD prescribe under Medicare Part D?
In 2024, William Slagle, MD had 366 Medicare Part D claims for 233 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is William Slagle, MD's MIPS final score?
The 2023 MIPS final score is 89.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.