William Tschannen, PA-C
Physician Assistant · Saint Louis, MO
William Tschannen, PA-C is a physician assistant with a practice address in Saint Louis, Missouri, and NPI 1427651967, issued on Nov 18, 2020. Check the license (Missouri 2021009626, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Tschannen
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2021009626 MO
Self-reported in NPPES; status is on the state search - Practice location
- 3009 N Ballas RD Ste 390C, Saint Louis, MO 63131
- Phone
- (314) 996-5900
- Enumerated
- Nov 18, 2020
- Entity
- Type 1 · individual
Also registered at 3009 N Ballas RD Ste 390C
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel Duncan, MDInternal Medicine Physician1639601628
- Matthew Gerling, DOInternal Medicine Physician1407387376
- Mai Hunt, M.D.Internal Medicine Physician1861464158
- Kimberly McClure, MDFamily Medicine Physician1942730320
- Barry Mossman, M.D.Internal Medicine Physician1053516294
- Lindsey O'Bryant, AGNP-CNurse Practitioner1831591403
Verify William Tschannen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2021009626Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3.0 times the Medicare Part D claims of the average physician assistant in 2024
2,482 Medicare Part D claims for 216 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 23 claims were for opioids.
Most prescribed
- Atorvastatin Calcium99 claims
- Levothyroxine Sodium95 claims
- Amlodipine Besylate82 claims
- Lisinopril82 claims
- Methylprednisolone81 claims
- Gabapentin75 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: $385.51
21 payments, mostly food and beverage; the largest payer was Abbvie Inc. The 64,719 providers of this specialty with any payment received $841.65 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 2 group practices
- General John J Pershing Memorial Hospital AssociationBrookfield, MO
- Physician Groups LCO Fallon, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
498 physician assistant records list a practice address in Saint Louis
They are 498 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,790 physician assistant records in Missouri.
All 498 in Saint Louis → All 1,790 in Missouri → Every provider in Saint Louis →
Other physician assistant records in Missouri
- Makenzie Abbott, PA-CJefferson City, MO1003436585
- Muhannad Abdin, PA-CJoplin, MO1528859808
- Dana Abdullahi, PA-CKansas City, MO1285199729
- Kelbie Abercrombie, PA-CSpringfield, MO1124323001
- Melissa Abramovitz, PASpringfield, MO1255638003
- Haile AbrhaKansas City, MO1730853367
- Nada Abusalim, PA-CColumbia, MO1194434084
- Sierra AckerSaint Louis, MO1942142468
- Elaina Adams, PA-C LAT ATCColumbia, MO1134836406
- James Adams, PAJoplin, MO1831126788
Common questions
What is William Tschannen, PA-C's NPI number?
William Tschannen, PA-C's National Provider Identifier (NPI) is 1427651967, issued on Nov 18, 2020. An NPI identifies a provider in billing; it is not a license.
Where is William Tschannen, PA-C located?
The NPPES record lists a practice address at 3009 N Ballas RD Ste 390C, Saint Louis, MO, 63131. Phone: (314) 996-5900. Providers update this record themselves, so call before visiting.
How can I verify William Tschannen, PA-C's license?
NPPES lists Missouri license number 2021009626, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does William Tschannen, PA-C prescribe under Medicare Part D?
In 2024, William Tschannen, PA-C had 2,482 Medicare Part D claims for 216 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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) 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 27, 2026.