Erin L. Williams-Leber, P A
Medical Physician Assistant · Butte, MT
Erin L. Williams-Leber, P A is a medical physician assistant with a practice address in Butte, Montana, and NPI 1548297880, issued on Jun 26, 2006. Check the license (Montana 319, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Erin L. Williams-Leber
- Credential
- P A
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 319 MT
Self-reported in NPPES; status is on the state search - Practice location
- 300 W Mercury St, Butte, MT 59701
- Phone
- (406) 723-1300
- Enumerated
- Jun 26, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (406) 723-1335
- Medicaid ID
- 4300517 MT
- Medicare enrollment
- Enrolled (PECOS I20080213000181); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 269 in Montana → Look up another NPI →
Also registered at 300 W Mercury St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Chamberlain, M.D.Internal Medicine Physician1861423071
- Florian Cortese, M.D.Internal Medicine Physician1609804228
- Dannielle Hall, PA-CPhysician Assistant1194129874
- Kenneth Hunt, M.D.Legal Medicine1265463475
- Jeanne Mehrens, P A CPhysician Assistant1285854034
- John Pullman, MDInternal Medicine Physician1518998426
Verify Erin L. Williams-Leber in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 319Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average medical physician assistant in 2024
247 Medicare Part D claims for 87 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims. 14 claims were for opioids.
Most prescribed
- Clonidine12 claims
- Methocarbamol12 claims
- Alprazolam11 claims
- Farxiga11 claims
- Mounjaro11 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: $710.13
44 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 16,165 providers of this specialty with any payment received $1,055.00 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
- Mercury Street Medical Group PLLCButte, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erin L. Williams-Leber among 269 medical physician assistant records in Montana
Erin L. Williams-Leber, P A is one of 269 medical physician assistant records with a practice address in Montana. 83% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 63% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1999 · median 2011 among the 193 with a school on file
- Record last updated2007 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in Montana
There are 269 medical physician assistant records in Montana.
All 269 in Montana → Every provider in Butte → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Carlye Bolstad, PA-CButte, MT 597011528362159
- Micaul McClafferty, PAButte, MT 597011477033793
- Braxton PorterButte, MT 597011902688138
- Taisha Sharon, PA-CButte, MT 597011770097289
- Shoni Costanti, PA-CBelgrade, MT 597141104251966
- Spencer Jacquot, PA-CBelgrade, MT 597141639774029
- Cassie Springer, PA-CBelgrade, MT 597141508199548
- Deborah Cades, PA-CBozeman, MT 597151306893102
Common questions
What is Erin L. Williams-Leber, P A's NPI number?
Erin L. Williams-Leber, P A's National Provider Identifier (NPI) is 1548297880, issued on Jun 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Erin L. Williams-Leber, P A located?
The NPPES record lists a practice address at 300 W Mercury St, Butte, MT, 59701. Phone: (406) 723-1300. Providers update this record themselves, so call before visiting.
How can I verify Erin L. Williams-Leber, P A's license?
NPPES lists Montana license number 319, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Erin L. Williams-Leber, P A prescribe under Medicare Part D?
In 2024, Erin L. Williams-Leber, P A had 247 Medicare Part D claims for 87 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.