Clayton Lanham, MD
Family Medicine Physician · Lake Geneva, WI
Clayton Lanham, MD is a family medicine physician with a practice address in Lake Geneva, Wisconsin, and NPI 1831848951, issued on Mar 23, 2022. Check the license (Wisconsin 9901, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Clayton Lanham
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 9901 WI
Self-reported in NPPES; status is on the state search - Practice location
- 146 E Geneva SQ, Lake Geneva, WI 53147
- Phone
- (262) 249-4660
- Enumerated
- Mar 23, 2022
- Record last updated
- Sep 12, 2025
- Medicaid ID
- 100275199 WI
- Medicare enrollment
- Enrolled (PECOS I20250819001929); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 146 E Geneva SQ
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nancy Asencio, APNPNurse Practitioner1962410530
- Austin Bacchus, M.D.Family Medicine Physician1225258171
- Ellen Barnstable, MDDermatology Physician1053948562
- Justine Benin, D.O.Family Medicine Physician1942541362
- Shashi Bhushan, MDInternal Medicine Physician1689774101
Verify Clayton Lanham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 9901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family medicine physician in 2024
298 Medicare Part D claims for 83 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 29 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen19 claims
- Lisinopril13 claims
- Gabapentin11 claims
- Metformin Hcl Er11 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.
Bills Medicare through one group practice
- Aurora Medical Group, Inc.Lake Geneva, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clayton Lanham among 3,765 family medicine physician records in Wisconsin
Clayton Lanham, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 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 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2021 · median 2007 among the 2,347 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 family medicine physician records list a practice address in Lake Geneva
They are 23 of the 366 NPPES records with a practice address in Lake Geneva, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Lake Geneva → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Austin Bacchus, M.D.Lake Geneva, WI 531471225258171
- Justine Benin, D.O.Lake Geneva, WI 531471942541362
- Norbert Debiase, MDLake Geneva, WI 531471497959779
- Greg Gerber, MDLake Geneva, WI 531471831204916
- Volha Haliantava, M.D.Lake Geneva, WI 531471598008351
- Britton Kolar, MDLake Geneva, WI 531471114076486
- Andrew MeyerLake Geneva, WI 531471801069091
- Andrew Morton, MDLake Geneva, WI 531471619242005
Common questions
What is Clayton Lanham, MD's NPI number?
Clayton Lanham, MD's National Provider Identifier (NPI) is 1831848951, issued on Mar 23, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Clayton Lanham, MD located?
The NPPES record lists a practice address at 146 E Geneva SQ, Lake Geneva, WI, 53147. Phone: (262) 249-4660. Providers update this record themselves, so call before visiting.
How can I verify Clayton Lanham, MD's license?
NPPES lists Wisconsin license number 9901, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Clayton Lanham, MD prescribe under Medicare Part D?
In 2024, Clayton Lanham, MD had 298 Medicare Part D claims for 83 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.