Mary Ellen Williams, NP-C
Nurse Practitioner · Casper, WY
Mary Ellen Williams, NP-C is a nurse practitioner with a practice address in Casper, Wyoming, and NPI 1972803013, issued on Oct 22, 2010. Check the license (Wyoming 8993-1079, as entered in NPPES) with the Wyoming board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mary Ellen Williams
- Credential
- NP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 8993-1079 WY
Self-reported in NPPES; status is on the state search - Practice location
- 1416 E A St, Casper, WY 82601
- Phone
- (307) 577-8600
- Enumerated
- Oct 22, 2010
- Record last updated
- Nov 15, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (307) 577-8605
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 112 in Wyoming → Look up another NPI →
Also registered at 1416 E A St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Ellen Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wyoming board licenses this profession
Search for license 8993-1079Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mary Ellen Williams among 112 nurse practitioner records in Wyoming
Mary Ellen Williams, NP-C is one of 112 nurse practitioner records with a practice address in Wyoming. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2010, is newer than 31% of them.
- NPI issued2010 · 31% of these records are older, 66% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2010 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 nurse practitioner records list a practice address in Casper
They are 26 of the 1,924 NPPES records with a practice address in Casper, and 112 nurse practitioner records in Wyoming. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 112 in Wyoming → Every provider in Casper → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Cassie Amadio, NP-CCasper, WY 826011477894756
- Cathy Berens, MSNAPRNCasper, WY 826011164533717
- Kristin Britt, DNP, FNP-CCasper, WY 826011205504891
- Nancy Brown, FNP-CCasper, WY 826011023016094
- Kerry Fischer, NPCasper, WY 826011437522125
- Janine Glover, NP-CCasper, WY 826011861704702
- Amy Gruwell, FNPCasper, WY 826011699761585
- Megan MakelkyCasper, WY 826011114568292
Common questions
What is Mary Ellen Williams, NP-C's NPI number?
Mary Ellen Williams, NP-C's National Provider Identifier (NPI) is 1972803013, issued on Oct 22, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ellen Williams, NP-C located?
The NPPES record lists a practice address at 1416 E A St, Casper, WY, 82601. Phone: (307) 577-8600. Providers update this record themselves, so call before visiting.
How can I verify Mary Ellen Williams, NP-C's license?
NPPES lists Wyoming license number 8993-1079, as entered by the provider. Search the Wyoming board that licenses this profession; the NPPES record confirms identity 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. 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.