Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Maki Ishii Tsou, D.M.D.
Periodontics in Bryn Mawr, PA · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1740448869
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Maki Ishii Tsou
Credential D.M.D.
Sex Female
Practice address 919 Conestoga Rd, Building 2, Suite 209, Bryn Mawr, PA, 19010
Phone (484) 380-2143
Fax (484) 380-2149
Enumeration date May 27, 2008
Last updated in NPPES Mar 16, 2017
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD 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 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 Maki Tsou?
Maki Tsou is registered in NPPES with the primary taxonomy of Periodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → John Mulholland Dermatology Physician · Bryn Mawr, PA NPI 1912901802 Victoria Cirillo-Hyland Dermatopathology Physician · Bryn Mawr, PA NPI 1356349377 Lara Logan Physical Therapy Assistant · Bryn Mawr, PA NPI 1346241171 Stuart Lessin Procedural Dermatology Physician · Bryn Mawr, PA NPI 1144294497 Bryn Mawr Skin & Cancer LLP Specialist · Rosemont, PA NPI 1346205242 Tracy Horter Physical Therapy LLC Physical Therapy Clinic/Center · Rosemont, PA NPI 1275599409 David Ellis Urology Physician · Rosemont, PA NPI 1306896279 Bryn Mawr Urology Urology Physician · Rosemont, PA NPI 1003860966
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-16.