Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Megan Willemstein, PHARMD

Pharmacotherapy Pharmacist in Petoskey, MI · enumerated 2016 · practices at Meijer, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1003276544

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Registry record

Entity type Individual (Type 1)

Name Dr. Megan Willemstein

Credential PHARMD

Sex Female

Practice address 1201 Lears Rd, Petoskey, MI, 49770

Phone (231) 348-6364

Enumeration date Feb 25, 2016

Last updated in NPPES Feb 25, 2016

Taxonomy & licenses

1835P1200X Pharmacotherapy Pharmacist Pharmacy Service Providers · License 5302040545 (MI) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Megan Willemstein's NPI record?

Cross-check NPI 1003276544 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1003276544 active?

Yes, as of the latest NPPES snapshot, NPI 1003276544 is active (record last updated 2016-02-25).

Other providers at this practice address

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Meijer, Inc. Community/Retail Pharmacy · Petoskey, MI NPI 1336464312 Joshua Barraw Pharmacist · Petoskey, MI NPI 1376985119 Richard Kalkman Pharmacotherapy Pharmacist · Petoskey, MI NPI 1205247814 Rachel Allman Pharmacist · Petoskey, MI NPI 1285308700

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-25.