William C. Spanos, M.D.
Otolaryngology Physician · Sioux Falls, SD
William C. Spanos, M.D. is an otolaryngology physician with a practice address in Sioux Falls, South Dakota, and NPI 1184833584, issued on May 22, 2007. Check the license (South Dakota 7326, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- William C. Spanos
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License numbers
- 7326 SD
34781 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1310 W 22ND St, Sioux Falls, SD 57105
- Phone
- (605) 328-8200
- Enumerated
- May 22, 2007
- Record last updated
- Apr 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (605) 328-8201
- Medicare enrollment
- Enrolled (PECOS I20090121000644); accepts Medicare assignment
- Medical or professional school
- University Of Louisville School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 45 in South Dakota → Look up another NPI →
Also registered at 1310 W 22ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Beth Amdahl, PA-CPhysician Assistant1831183011
- William Avery, DOOtolaryngology Physician1144225392
- Richard Barth, M.D.Endocrinology, Diabetes & Metabolism Physician1659375038
- Shana Bauer-VaithAudiologist1043695679
- Stewart Bofenkamp, CCC-AAudiologist1861497000
Verify William C. Spanos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 7326Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average otolaryngology physician in 2024
342 Medicare Part D claims for 121 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 38 claims were for opioids.
Most prescribed
- Levothyroxine Sodium145 claims
- Amoxicillin31 claims
- Oxycodone Hcl29 claims
- Chlorhexidine Gluconate21 claims
- Calcitriol14 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: $773.05
9 payments; by number, the most common kind was food and beverage; the largest payer was Inari Medical, Inc. The 6,429 providers of this specialty with any payment received $1,922.50 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
- Avera MckennanSioux Falls, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William C. Spanos among 45 otolaryngology physician records in South Dakota
William C. Spanos, M.D. is one of 45 otolaryngology physician records with a practice address in South Dakota. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 58% of them.
- NPI issued2007 · 58% of these records are older, 31% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2001 · median 2001 among the 32 with a school on file
- Record last updated2015 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in South Dakota
There are 45 otolaryngology physician records in South Dakota.
All 45 in South Dakota → Every provider in Sioux Falls → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- William Avery, DOSioux Falls, SD 571051144225392
- Mark Desautel, MDSioux Falls, SD 571051255338174
- Regan Hammell, CNPSioux Falls, SD 571051629858469
- Mark Jameson, MD PHDSioux Falls, SD 571051073564993
- Ricky Jensen, MDSioux Falls, SD 571051780685651
- Sean JohnsonSioux Falls, SD 571051053754994
- Jaishree Lerew, D.O.Sioux Falls, SD 571051093209884
- Chengetai MahomvaSioux Falls, SD 571051841640778
Common questions
What is William C. Spanos, M.D.'s NPI number?
William C. Spanos, M.D.'s National Provider Identifier (NPI) is 1184833584, issued on May 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William C. Spanos, M.D. located?
The NPPES record lists a practice address at 1310 W 22ND St, Sioux Falls, SD, 57105. Phone: (605) 328-8200. Providers update this record themselves, so call before visiting.
How can I verify William C. Spanos, M.D.'s license?
NPPES lists South Dakota license number 7326, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William C. Spanos, M.D. prescribe under Medicare Part D?
In 2024, William C. Spanos, M.D. had 342 Medicare Part D claims for 121 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.