Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Patty Greene, PHARMD
Pharmacist in Largo, MD · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861535643
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Registry record
Entity type Individual (Type 1)
Name Mrs. Patty Greene
Credential PHARMD
Sex Female
Practice address 1221 Mercantile Ln, Largo, MD, 20774
Phone (301) 618-5691
Fax (301) 618-5716
Enumeration date Feb 14, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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.
Frequently asked questions
Is NPI 1861535643 active?
Yes, as of the latest NPPES snapshot, NPI 1861535643 is active (record last updated 2007-07-08).
How do I verify Patty Greene's NPI record?
Cross-check NPI 1861535643 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Stephen Ilario Orthopaedic Surgery Physician · Largo, MD NPI 1164425419 Dwayne Thompson Emergency Medicine Physician · Largo, MD NPI 1386630614 Elizabeth Biru Internal Medicine Physician · Largo, MD NPI 1457342230 Felicia Elvis Physician Assistant · Largo, MD NPI 1033100391 Weijia Xia Yan Anesthesiology Physician · Upper Marlboro, MD NPI 1114901477 Michelle Mead Emergency Medicine Physician · Upper Marlboro, MD NPI 1689650780 Madhu Priya Khanna Urology Physician · Largo, MD NPI 1154309813 Kristina Eley Medical Physician Assistant · Largo, MD NPI 1306804927
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.