Lon C. Madsen, DO
Family Medicine Physician · Spokane, WA
Lon C. Madsen, DO is a family medicine physician with a practice address in Spokane, Washington, and NPI 1558433052, issued on Nov 14, 2006. Check the license (Washington OP00001511, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Lon C. Madsen
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- OP00001511 WA
008315 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 9708 N Nevada St Ste 203, Spokane, WA 99218
- Phone
- (509) 863-9240
- Enumerated
- Nov 14, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (509) 574-5863
- Medicaid ID
- 008538 AZ
- Medicare enrollment
- Enrolled (PECOS I20040521001170); accepts Medicare assignment
- Medical or professional school
- College Of Osteo Med Of The Pacific At Pomona, 1993
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Verify Lon C. Madsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP00001511Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average family medicine physician in 2024
2,528 Medicare Part D claims for 196 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 97 claims were for opioids.
Most prescribed
- Levothyroxine Sodium150 claims
- Atorvastatin Calcium135 claims
- Losartan Potassium123 claims
- Metformin Hcl88 claims
- Rosuvastatin Calcium80 claims
- Metoprolol Succinate79 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.
Lon C. Madsen among 5,534 family medicine physician records in Washington
Lon C. Madsen, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1993 · median 2009 among the 3,294 with a school on file
- Record last updated2023 · 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).
283 family medicine physician records list a practice address in Spokane
They are 283 of the 14,049 NPPES records with a practice address in Spokane, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Spokane → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kristina Anderson, M.D.Spokane, WA 992181184733636
- James Chavez Muramatsu, DOSpokane, WA 992181518946144
- Donald Condon, M.D.Spokane, WA 992181134128697
- Robert Corbett, M.D.Spokane, WA 992181578565586
- Mark Didier, MDSpokane, WA 992181255333647
- Kristen Flemmer, MDSpokane, WA 992181972522019
- Kelly Grieves, MDSpokane, WA 992181013969401
- Mark Hart, D.O.Spokane, WA 992181013919927
Common questions
What is Lon C. Madsen, DO's NPI number?
Lon C. Madsen, DO's National Provider Identifier (NPI) is 1558433052, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lon C. Madsen, DO located?
The NPPES record lists a practice address at 9708 N Nevada St Ste 203, Spokane, WA, 99218. Phone: (509) 863-9240. Providers update this record themselves, so call before visiting.
How can I verify Lon C. Madsen, DO's license?
NPPES lists Washington license number OP00001511, 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 Lon C. Madsen, DO prescribe under Medicare Part D?
In 2024, Lon C. Madsen, DO had 2,528 Medicare Part D claims for 196 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.