NPI Portal NPI Lookup & Verification

Mark Greenwald, RPH

Mark Greenwald is a Pharmacist provider (Pharmacist) practicing in Winter Haven, FL, registered in the NPPES registry with NPI 1659929503 since 2019. The credential RPH stands for Registered Pharmacist. Practices at Walgreen Co (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1659929503
Entity type Individual (Type 1)
Name Mark Greenwald
Credential RPH
Sex Male
Practice address Winter Haven, FL, 33881
Phone 8632939133
Enumeration date 2019-09-03
Last updated in NPPES 2019-09-03

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
183500000X Pharmacist Primary PS22065 FL

RPH — Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

Copy-ready billing details
Provider: Mark Greenwald, RPH
NPI: 1659929503
Taxonomy: 183500000X (Pharmacist)
Address: Winter Haven, FL, 33881

Other providers at this practice address

NPI Name Type Specialty Location
1003821273 Walgreen Co Organization Pharmacy Winter Haven, FL
1376824235 Allison Lopez Individual Pharmacist Winter Haven, FL
1891078416 Yuqun Wu Individual Pharmacist Winter Haven, FL
1245579416 Danielle Showers Individual Pharmacist Winter Haven, FL
1790114080 Lauren Soles Individual Pharmacist Winter Haven, FL
1023615499 Morgan Schaeffer Individual Pharmacist Winter Haven, FL
1932097771 Suja Joseph Individual Pharmacist Winter Haven, FL

Verify this record

Cross-check NPI 1659929503 against the authoritative CMS record: view Mark Greenwald on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Mark Greenwald?
Mark Greenwald is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2019-09-03.