Kate Alexander Herron Slaymaker, DO
Family Medicine Physician · Chehalis, WA
Kate Alexander Herron Slaymaker, DO is a family medicine physician with a practice address in Chehalis, Washington, and NPI 1538622907, issued on Apr 11, 2019. Check the license (Washington OP61247770, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Kate Alexander Herron Slaymaker
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OP61247770 WA
Self-reported in NPPES; status is on the state search - Practice location
- 931 S Market Blvd, Chehalis, WA 98532
- Phone
- (360) 767-6300
- Enumerated
- Apr 11, 2019
- Record last updated
- Oct 19, 2022
- Fax
- (360) 767-6320
- Medicare enrollment
- Enrolled (PECOS I20220928000497); accepts Medicare assignment
- Medical or professional school
- Edward Via Col Of Osteo Medicine-Virginia Campus, 2019
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 931 S Market Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Francisco Chan, M.D.Family Medicine Physician1124217716
- Zachary Condon, MDStudent in an Organized Health Care Education/Training Program1790489490
- Daniela Dandridge, PHARM.D.Pharmacist1366707036
- Erica Dennehy, LCSWClinical Social Worker1326296096
Verify Kate Alexander Herron Slaymaker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP61247770Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average family medicine physician in 2024
1,949 Medicare Part D claims for 177 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium176 claims
- Amlodipine Besylate82 claims
- Lisinopril78 claims
- Levothyroxine Sodium74 claims
- Gabapentin70 claims
- Buprenorphine-Naloxone46 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: $52.93
2 payments; by number, the most common kind was food and beverage; the largest payer was Indivior Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Providence Health And Services WashingtonChehalis, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kate Alexander Herron Slaymaker among 5,534 family medicine physician records in Washington
Kate Alexander Herron Slaymaker, DO is one of 5,534 family medicine physician records with a practice address in Washington. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2019 · median 2009 among the 3,294 with a school on file
- Record last updated2022 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 family medicine physician records list a practice address in Chehalis
They are 31 of the 705 NPPES records with a practice address in Chehalis, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Chehalis → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jeanne Adams, MDChehalis, WA 985321831208057
- Francisco Chan, M.D.Chehalis, WA 985321124217716
- David Ellis, M.D.Chehalis, WA 985321184711426
- Simon Elloway, MDChehalis, WA 985321811057870
- Esther Kittle, MDChehalis, WA 985321205959459
- Sarah Landrum, M.D.Chehalis, WA 985321033317920
- Juan Lee, MDChehalis, WA 985321235469784
- Michael Lorich, DO, MPHChehalis, WA 985321881777340
Common questions
What is Kate Alexander Herron Slaymaker, DO's NPI number?
Kate Alexander Herron Slaymaker, DO's National Provider Identifier (NPI) is 1538622907, issued on Apr 11, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Kate Alexander Herron Slaymaker, DO located?
The NPPES record lists a practice address at 931 S Market Blvd, Chehalis, WA, 98532. Phone: (360) 767-6300. Providers update this record themselves, so call before visiting.
How can I verify Kate Alexander Herron Slaymaker, DO's license?
NPPES lists Washington license number OP61247770, 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 Kate Alexander Herron Slaymaker, DO prescribe under Medicare Part D?
In 2024, Kate Alexander Herron Slaymaker, DO had 1,949 Medicare Part D claims for 177 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.