Erin Mari Guzynski, RPH
Pharmacist · Helena, MT
Erin Mari Guzynski, RPH is a pharmacist with a practice address in Helena, Montana, and NPI 1760116842, issued on Jul 13, 2022. Check the license (Montana PHA-PHA-LIC-4541, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Erin Mari Guzynski
- Credential
- RPH
- Primary taxonomy
- Pharmacist 183500000X
- License numbers
- PHA-PHA-LIC-4541 MT
4541 MT
Self-reported in NPPES; status is on the state search - Practice location
- 1930 9TH Ave, Helena, MT 59601
- Phone
- (406) 500-2080
- Enumerated
- Jul 13, 2022
- Record last updated
- Jul 13, 2022
- Fax
- (406) 500-2080
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 1,087 in Montana → Look up another NPI →
Also registered at 1930 9TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rebekah Coonen, LCPC, LACProfessional Counselor1013543339
- Courtnay Crowell, M.D.Family Medicine Physician1871617332
- James Defoe, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1295398576
Verify Erin Mari Guzynski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license PHA-PHA-LIC-4541Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 100% of the cost of the top drugs
28 Medicare Part D claims for 24 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 93% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Shingrix15 claims
- Abrysvo11 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.
Erin Mari Guzynski among 1,087 pharmacist records in Montana
Erin Mari Guzynski, RPH is one of 1,087 pharmacist records with a practice address in Montana. 19% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 80% of them.
- NPI issued2022 · 80% of these records are older, 16% newer
- In a Medicare fileYes · 19% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2022 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
101 pharmacist records list a practice address in Helena
They are 101 of the 1,591 NPPES records with a practice address in Helena, and 1,087 pharmacist records in Montana.
All 1,087 in Montana → Every provider in Helena → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Starla Blank, PHARMDHelena, MT 596011992809552
- Roger Citron, R.PH.Helena, MT 596011366449589
- Mark Eichler, RPHHelena, MT 596011811984693
- Anthony Fabian, PHARMDHelena, MT 596011497733323
- Chad Fitzgerald, PHARM-DHelena, MT 596011386812287
- Travis Frydenlund, R.PH.Helena, MT 596011326228289
- Henry Griffith, PHARMD; RPHHelena, MT 596011205005451
- Brian Heeney, RPHHelena, MT 596011144499120
Common questions
What is Erin Mari Guzynski, RPH's NPI number?
Erin Mari Guzynski, RPH's National Provider Identifier (NPI) is 1760116842, issued on Jul 13, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Erin Mari Guzynski, RPH located?
The NPPES record lists a practice address at 1930 9TH Ave, Helena, MT, 59601. Phone: (406) 500-2080. Providers update this record themselves, so call before visiting.
How can I verify Erin Mari Guzynski, RPH's license?
NPPES lists Montana license number PHA-PHA-LIC-4541, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Erin Mari Guzynski, RPH prescribe under Medicare Part D?
In 2024, Erin Mari Guzynski, RPH had 28 Medicare Part D claims for 24 beneficiaries; the average among pharmacist prescribers was 119. 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.