Liam Gerhardt Clark, MD
Neurology Physician · Cheyenne, WY
Liam Gerhardt Clark, MD is a neurology physician with a practice address in Cheyenne, Wyoming, and NPI 1871090837, issued on Apr 6, 2018. Check the license (Wyoming 15685A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Liam Gerhardt Clark
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 15685A WY
11441506-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 2301 House Ave Ste 201, Cheyenne, WY 82001
- Phone
- (307) 638-7757
- Enumerated
- Apr 6, 2018
- Record last updated
- Jan 20, 2026
- Medicare enrollment
- Enrolled (PECOS I20230804002535); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 15 in Wyoming → Look up another NPI →
Also registered at 2301 House Ave Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alissa AylwardPhysician Assistant1598241911
- Tracie Caller, M.D.Neurology Physician1164645206
- William Denk, MDPain Medicine (Anesthesiology) Physician1407340771
- Rage Geringer, MDPulmonary Disease Physician1447757349
- Elizabeth Nooney, FNPFamily Nurse Practitioner1699323535
- Augusto Quilon, MDRheumatology Physician1437362266
Verify Liam Gerhardt Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 15685ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average neurology physician in 2024
1,102 Medicare Part D claims for 181 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Gabapentin81 claims
- Lamotrigine52 claims
- Fluoxetine Hcl51 claims
- Memantine Hcl43 claims
- Carbidopa-Levodopa37 claims
- Duloxetine Hcl37 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: $155.72
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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
- Cheyenne Regional Physicians Group LLCCheyenne, WY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Liam Gerhardt Clark among 15 neurology physician records in Wyoming
Liam Gerhardt Clark, MD is one of 15 neurology physician records with a practice address in Wyoming. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 87% of them.
- NPI issued2018 · 87% of these records are older, 7% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Record last updated2026 · 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 2084N0400X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Wyoming
There are 15 neurology physician records in Wyoming.
All 15 in Wyoming → Every provider in Cheyenne → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Tracie Caller, M.D.Cheyenne, WY 820011164645206
- Onjin Kim, M.D.Cheyenne, WY 820011942542014
- Celina Tolge, M.D.Cheyenne, WY 820011134124134
- Mary Kerber, MDCheyenne, WY 820091790768760
- Reed Shafer, MDCheyenne, WY 820091316920549
- Allen Gee, MD, PHDCody, WY 824141083793863
- Peter Crane, MDLander, WY 825201750472403
- Michael Swenson, M.D.Lander, WY 825201407109762
Common questions
What is Liam Gerhardt Clark, MD's NPI number?
Liam Gerhardt Clark, MD's National Provider Identifier (NPI) is 1871090837, issued on Apr 6, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Liam Gerhardt Clark, MD located?
The NPPES record lists a practice address at 2301 House Ave Ste 201, Cheyenne, WY, 82001. Phone: (307) 638-7757. Providers update this record themselves, so call before visiting.
How can I verify Liam Gerhardt Clark, MD's license?
NPPES lists Wyoming license number 15685A, 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.
How much does Liam Gerhardt Clark, MD prescribe under Medicare Part D?
In 2024, Liam Gerhardt Clark, MD had 1,102 Medicare Part D claims for 181 beneficiaries; the average among neurology physician prescribers was 1,370. 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.