James L. Napier, MD
Neurology Physician · Green Bay, WI
James L. Napier, MD is a neurology physician with a practice address in Green Bay, Wisconsin, and NPI 1043327489, issued on Aug 23, 2006. Check the license (Wisconsin 44857, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- James L. Napier
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 44857 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2845 Greenbrier RD, Green Bay, WI 54308
- Phone
- (920) 288-8100
- Enumerated
- Aug 23, 2006
- Record last updated
- Oct 9, 2023
- Fax
- (920) 288-8152
- Medicaid ID
- 34239300 WI
- Medicare enrollment
- Enrolled (PECOS I20040601000476); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1978
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 399 in Wisconsin → Look up another NPI →
Also registered at 2845 Greenbrier RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald Beno, MDPediatrics Physician1669481388
- Sara Beno-Chambers, APNPNurse Practitioner1598774200
- Terry Betts, PTAPhysical Therapy Assistant1306025085
- Michael Brockman, MDObstetrics & Gynecology Physician1023027703
- Cynthia Brown-Sullivan, MDObstetrics & Gynecology Physician1932118601
- Susan Campbell, RNRegistered Nurse1932118080
Verify James L. Napier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 44857Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.2 times the Medicare Part D claims of the average neurology physician in 2024
5,694 Medicare Part D claims for 642 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Levetiracetam500 claims
- Carbidopa-Levodopa329 claims
- Gabapentin262 claims
- Duloxetine Hcl248 claims
- Donepezil Hcl226 claims
- Baclofen216 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: $118.06
1 payment: food and beverage; the largest payer was Alexion Pharmaceuticals, 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 2 group practices
- Aurora Medical Group, Inc.Milwaukee, WI
- Baycare Aurora LLCGreen Bay, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James L. Napier among 399 neurology physician records in Wisconsin
James L. Napier, MD is one of 399 neurology physician records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 53% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1978 · median 2005 among the 274 with a school on file
- Record last updated2023 · 51% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Wisconsin
There are 399 neurology physician records in Wisconsin.
All 399 in Wisconsin → Every provider in Green Bay → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Merle Teetzen, MDGreen Bay, WI 543081962519066
- Aaron Bubolz, D.O.Green Bay, WI 543111831486828
- Rebecca Fenelon, MDGreen Bay, WI 543111851928444
- Sany Khabbaz, MDGreen Bay, WI 543111538227848
- Yousaf Ajam, MDGreen Bay, WI 543011841713088
- Aubree Bruhnding, DOGreen Bay, WI 543011093169773
- Celeste Case, MDGreen Bay, WI 543011639194301
- David Heverly, MDGreen Bay, WI 543011649205170
Common questions
What is James L. Napier, MD's NPI number?
James L. Napier, MD's National Provider Identifier (NPI) is 1043327489, issued on Aug 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James L. Napier, MD located?
The NPPES record lists a practice address at 2845 Greenbrier RD, Green Bay, WI, 54308. Phone: (920) 288-8100. Providers update this record themselves, so call before visiting.
How can I verify James L. Napier, MD's license?
NPPES lists Wisconsin license number 44857, 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 James L. Napier, MD prescribe under Medicare Part D?
In 2024, James L. Napier, MD had 5,694 Medicare Part D claims for 642 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.