Opal Ann Mack, PHARMD
Pharmacist · Casper, WY
Opal Ann Mack, PHARMD is a pharmacist with a practice address in Casper, Wyoming, and NPI 1336580091, issued on Jul 10, 2013. Check the license (Wyoming 3650, as entered in NPPES) with the Wyoming board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Opal Ann Mack
- Credential
- PHARMD
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 3650 WY
Self-reported in NPPES; status is on the state search - Practice location
- 300 SE Wyoming Blvd, Casper, WY 82609
- Phone
- (307) 577-7062
- Enumerated
- Jul 10, 2013
- Record last updated
- Mar 28, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 607 in Wyoming → Look up another NPI →
Also registered at 300 SE Wyoming Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jessie Ritter, PHARMDPharmacist1790186997
- Heather Struempf, PHARMDPharmacist1386055291
Verify Opal Ann Mack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wyoming board licenses this profession
Search for license 3650Check 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, 97% of the cost of the top drugs
103 Medicare Part D claims for 92 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% 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.
- Abrysvo45 claims
- Shingrix41 claims
- Boostrix Tdap13 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.
Opal Ann Mack among 607 pharmacist records in Wyoming
Opal Ann Mack, PHARMD is one of 607 pharmacist records with a practice address in Wyoming. 28% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 47% of them.
- NPI issued2013 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 28% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2019 · 76% 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 Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
95 pharmacist records list a practice address in Casper
They are 95 of the 1,924 NPPES records with a practice address in Casper, and 607 pharmacist records in Wyoming.
All 607 in Wyoming → Every provider in Casper → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Stephanie Barsness, PHARMD, RPHCasper, WY 826091154601375
- Karyn Crouse, RPHCasper, WY 826091275512428
- Travis FallgrenCasper, WY 826091548540859
- Elizabeth Gutierrez, PHARM DCasper, WY 826091992005557
- Vicki Hughes, PHARM DCasper, WY 826091073720686
- Richard Johnson, RPHCasper, WY 826091487790382
- James McGirr, RPHCasper, WY 826091407841844
- Bessie McGirr, RPHCasper, WY 826091184758906
Common questions
What is Opal Ann Mack, PHARMD's NPI number?
Opal Ann Mack, PHARMD's National Provider Identifier (NPI) is 1336580091, issued on Jul 10, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Opal Ann Mack, PHARMD located?
The NPPES record lists a practice address at 300 SE Wyoming Blvd, Casper, WY, 82609. Phone: (307) 577-7062. Providers update this record themselves, so call before visiting.
How can I verify Opal Ann Mack, PHARMD's license?
NPPES lists Wyoming license number 3650, as entered by the provider. Search the Wyoming board that licenses this profession; the NPPES record confirms identity only.
How much does Opal Ann Mack, PHARMD prescribe under Medicare Part D?
In 2024, Opal Ann Mack, PHARMD had 103 Medicare Part D claims for 92 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.