Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Tracy Walczewski, PHARMD, RPH
Pharmacist in Acton, MA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1891386660
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Registry record
Entity type Individual (Type 1)
Name Tracy Walczewski
Credential PHARMD, RPH
Sex Female
Practice address 563 Massachusetts Ave, Acton, MA, 01720
Phone (978) 263-3091
Enumeration date Feb 3, 2021
Last updated in NPPES Feb 3, 2021
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 25493 | Other | MA | PHARMACIST LICENSE NUMBER (MA) |
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.
Frequently asked questions
What is the NPI number for Tracy Walczewski?
The National Provider Identifier (NPI) for Tracy Walczewski is 1891386660, a Type 1 (individual) record in the CMS NPPES registry.
Where does Tracy Walczewski practice?
The practice location on file with NPPES is in Acton, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Acton Pharmacy Inc Community/Retail Pharmacy · Acton, MA NPI 1023176476 Theodoros Toufas Pharmacist · Acton, MA NPI 1417390105 Acton Pharmacy Inc Long Term Care Pharmacy · Acton, MA NPI 1699316984 Saad Dinno Pharmacist · Acton, MA NPI 1447874383 Lynn Hearne Pharmacist · Acton, MA NPI 1952990939 Joanne Testa Williams Pharmacist · Acton, MA NPI 1497347249 Daniel Dinno Pharmacist · Acton, MA NPI 1841901519
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-03.