NPPES file of Aug 9, 2026

Maria McNeil Williams, APRN

Primary Care Nurse Practitioner · Polson, MT

Maria McNeil Williams, APRN is a primary care nurse practitioner with a practice address in Polson, Montana, and NPI 1134501117, issued on Jun 25, 2015. Check the license (Montana 100769, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134501117
Name
Maria McNeil Williams
Credential
APRN
Primary taxonomy
Primary Care Nurse Practitioner 363LP2300X
License numbers
100769 MT
NUR-RN-LIC-36703 MT
Self-reported in NPPES; status is on the state search
Practice location
50125 US Highway 93, Polson, MT 59860
Phone
(406) 885-8385
Enumerated
Jun 25, 2015
Record last updated
Jan 5, 2026
Fax
(205) 273-2430
Medicare enrollment
Enrolled (PECOS I20150904002509); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Maria McNeil Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Montana board licenses this profession
    Search for license 100769
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Montana license search

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59% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024

606 Medicare Part D claims for 23 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 45 claims were for opioids.

  1. Maria Williams606
  2. Specialty average1,492

Most prescribed

  1. Buprenorphine-Naloxone84 claims
  2. Zubsolv35 claims
  3. Adderall Xr33 claims
  4. Gabapentin32 claims
  5. Dextroamphetamine-Amphetamine27 claims
  6. Pregabalin24 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: $29.48

2 payments; by number, the most common kind was food and beverage; the largest payer was Corium, LLC. The 4,321 providers of this specialty with any payment received $625.13 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Maria Williams$29.48
  2. Specialty average$625.13

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

  1. Sunburst Health LLCKalispell, MT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Maria McNeil Williams among 37 primary care nurse practitioner records in Montana

Maria McNeil Williams, APRN is one of 37 primary care nurse practitioner records with a practice address in Montana. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 22% of them.

  • NPI issued2015 · 22% of these records are older, 76% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 54% of these records are
  • Graduated2013 · median 2021 among the 20 with a school on file
  • Record last updated2026 · 24% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Primary Care Nurse Practitioner providers in Montana

There are 37 primary care nurse practitioner records in Montana.

The 8 primary care nurse practitioner records with the nearest ZIP codes

  1. Stacey Riffe, CPNP-PC, FNP-CFrenchtown, MT 598341477546760
  2. Mechell RossiDarby, MT 598291801605415
  3. Patricia Kelly, NPArlee, MT 598211215015409
  4. Rachael Alsbury, FNP-CKalispell, MT 599011265916589
  5. Devin Robins, AGPCNP-CBigfork, MT 599111154119436
  6. Martha Laskos, APRNMissoula, MT 598081942787379
  7. Mary McIntyre, FNP-BCMissoula, MT 598081578246161
  8. Peggy Scharberg Chaffin, APRNMissoula, MT 598041174234769

Common questions

What is Maria McNeil Williams, APRN's NPI number?

Maria McNeil Williams, APRN's National Provider Identifier (NPI) is 1134501117, issued on Jun 25, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Maria McNeil Williams, APRN located?

The NPPES record lists a practice address at 50125 US Highway 93, Polson, MT, 59860. Phone: (406) 885-8385. Providers update this record themselves, so call before visiting.

How can I verify Maria McNeil Williams, APRN's license?

NPPES lists Montana license number 100769, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.

How much does Maria McNeil Williams, APRN prescribe under Medicare Part D?

In 2024, Maria McNeil Williams, APRN had 606 Medicare Part D claims for 23 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. 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.