Ian Barton May, M.D.
Internal Medicine Physician · Spokane, WA
Ian Barton May, M.D. is an internal medicine physician with a practice address in Spokane, Washington, and NPI 1790129930, issued on Apr 18, 2013. Check the license (Washington MD60636329, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Ian Barton May
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD60636329 WA
Self-reported in NPPES; status is on the state search - Practice location
- 624 E Front Ave, Spokane, WA 99202
- Phone
- (509) 626-9900
- Enumerated
- Apr 18, 2013
- Record last updated
- Nov 26, 2025
- Fax
- (509) 227-7070
- Medicare enrollment
- Enrolled (PECOS I20160509002318); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 624 E Front Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ian Barton May in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60636329Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
18 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Providence Health And Services WashingtonSpokane, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Barton May among 3,079 internal medicine physician records in Washington
Ian Barton May, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 75% 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 71% of them.
- NPI issued2013 · 71% of these records are older, 27% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2013 · median 2006 among the 1,852 with a school on file
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
230 internal medicine physician records list a practice address in Spokane
They are 230 of the 14,049 NPPES records with a practice address in Spokane, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Spokane → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Judy Benson, M.D.Spokane, WA 992021922081884
- Todd Gottschalk, DOSpokane, WA 992021457456873
- Michael Hixon, M.D.Spokane, WA 992021396850756
- Raluca Ionescu, MDSpokane, WA 992021497721211
- D'Arcy Johnson, MDSpokane, WA 992021083608616
- Michael Kerkering, M.D.Spokane, WA 992021881602910
- Thomas Laselle, MDSpokane, WA 992021932191343
- Charles Laudenbach, MDSpokane, WA 992021255324638
Common questions
What is Ian Barton May, M.D.'s NPI number?
Ian Barton May, M.D.'s National Provider Identifier (NPI) is 1790129930, issued on Apr 18, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Ian Barton May, M.D. located?
The NPPES record lists a practice address at 624 E Front Ave, Spokane, WA, 99202. Phone: (509) 626-9900. Providers update this record themselves, so call before visiting.
How can I verify Ian Barton May, M.D.'s license?
NPPES lists Washington license number MD60636329, 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 Ian Barton May, M.D. prescribe under Medicare Part D?
In 2024, Ian Barton May, M.D. had 18 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.