Erika L. Duffy, NP
Primary Care Nurse Practitioner · Billings, MT
Erika L. Duffy, NP is a primary care nurse practitioner with a practice address in Billings, Montana, and NPI 1700194453, issued on Sep 15, 2010. Check the license (Montana 100692, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Erika L. Duffy
- Credential
- NP
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License numbers
- 100692 MT
33043 MT
Self-reported in NPPES; status is on the state search - Practice location
- 1233 N 30TH St, Billings, MT 59101
- Phone
- (406) 237-4116
- Enumerated
- Sep 15, 2010
- Record last updated
- Jul 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 37 in Montana → Look up another NPI →
Also registered at 1233 N 30TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dean Angell, RNFlight Registered Nurse1265718183
- Charles Aragon, M.D.Anesthesiology Physician1093782591
Verify Erika L. Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 100692Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
22 Medicare Part D claims, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D.
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: $185.54
9 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Erika L. Duffy among 37 primary care nurse practitioner records in Montana
Erika L. Duffy, NP 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 2010, is newer than 11% of them.
- NPI issued2010 · 11% of these records are older, 86% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 54% of these records are
- Record last updated2021 · 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.
All 37 in Montana → Every provider in Billings → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Tracey Miller, APRNBillings, MT 591021942210208
- Drewry Hanes, FNPLivingston, MT 590471851696769
- Sara Hurley, FNP-BCHarlowton, MT 590361326805425
- Dylan Wiebe, FNPHardin, MT 590341295435840
- Brandi Knierim, DNP, FNP-CGlasgow, MT 592301265078455
- Kate MarshMiles City, MT 593011922519131
- Kjersti Downing, DNP, FNP-CColstrip, MT 593231417667288
- Kayla Boltz, FNPGreat Falls, MT 594041407672512
Common questions
What is Erika L. Duffy, NP's NPI number?
Erika L. Duffy, NP's National Provider Identifier (NPI) is 1700194453, issued on Sep 15, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Erika L. Duffy, NP located?
The NPPES record lists a practice address at 1233 N 30TH St, Billings, MT, 59101. Phone: (406) 237-4116. Providers update this record themselves, so call before visiting.
How can I verify Erika L. Duffy, NP's license?
NPPES lists Montana license number 100692, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Erika L. Duffy, NP prescribe under Medicare Part D?
In 2024, Erika L. Duffy, NP had 22 Medicare Part D claims; 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.