Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary Grace Renfrow, DNP, CRNP
Nurse Practitioner in Towson, MD · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1801372800
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Registry record
Entity type Individual (Type 1)
Name Dr. Mary Grace Renfrow
Credential DNP, CRNP
Sex Female
Practice address 7505 Osler Dr Ste 502, Towson, MD, 21204
Phone (410) 296-4210
Fax (443) 276-5865
Enumeration date Jul 13, 2018
Last updated in NPPES Jul 13, 2018
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R206254 (MD) Primary
DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses.
About the DNP 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
What specialty is Mary Renfrow?
Mary Renfrow is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Arsheya Patel Gastroenterology Physician · Towson, MD NPI 1720583107 Marguerite Adams Physician Assistant · Towson, MD NPI 1164139796 University of Maryland St. Joseph Medical Group, LLC General Practice Physician · Towson, MD NPI 1083461693 Chesapeake Digestive Associates, PC Gastroenterology Physician · Towson, MD NPI 1538998547 Patrick Mulherin Family Nurse Practitioner · Towson, MD NPI 1972434652
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-13.