William Michael Crosby, M.D.
Anesthesiology Physician · Lander, WY
William Michael Crosby, M.D. is an anesthesiology physician with a practice address in Lander, Wyoming, and NPI 1710978499, issued on Nov 2, 2005. Check the license (Wyoming 4201A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- William Michael Crosby
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 4201A WY
Self-reported in NPPES; status is on the state search - Practice location
- 535 E Main St Ste B, Lander, WY 82520
- Phone
- (307) 206-1224
- Enumerated
- Nov 2, 2005
- Record last updated
- Nov 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (307) 206-1214
- Medicaid ID
- 120134400 WY
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 83 in Wyoming → Look up another NPI →
Also registered at 535 E Main St Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Kidner, DNP, FNP-BC, FAANPNurse Practitioner1710928528
- Claude Minor, M.D.Surgery Physician1477589018
Verify William Michael Crosby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 4201ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $20.33
1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 17,774 providers of this specialty with any payment received $669.59 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.
William Michael Crosby among 83 anesthesiology physician records in Wyoming
William Michael Crosby, M.D. is one of 83 anesthesiology physician records with a practice address in Wyoming. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2020 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in Wyoming
There are 83 anesthesiology physician records in Wyoming.
All 83 in Wyoming → Every provider in Lander → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Emily Horne, MDLander, WY 825201679682595
- David Barahal, M.D.Casper, WY 826011093803918
- David Baxter, MDCasper, WY 826011861450801
- John Billings, MDCasper, WY 826011508936360
- Luke Bracke, M.D.Casper, WY 826011386899680
- Ryan Burton, MDCasper, WY 826011275646093
- Jeffery Christensen, D.O.Casper, WY 826011376860916
- Jeffrey Fowler, MDCasper, WY 826011831241983
Common questions
What is William Michael Crosby, M.D.'s NPI number?
William Michael Crosby, M.D.'s National Provider Identifier (NPI) is 1710978499, issued on Nov 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Michael Crosby, M.D. located?
The NPPES record lists a practice address at 535 E Main St Ste B, Lander, WY, 82520. Phone: (307) 206-1224. Providers update this record themselves, so call before visiting.
How can I verify William Michael Crosby, M.D.'s license?
NPPES lists Wyoming license number 4201A, as entered by the provider. Search the Wyoming Board of Medicine at https://wyomedboard.wyo.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.