Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Arnold Jay Sindler, DDS
Periodontics in Westminster, MD · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1386761005
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Registry record
Entity type Individual (Type 1)
Name Dr. Arnold Jay Sindler
Credential DDS
Sex Male
Practice address 407 Malcolm Dr, Westminster, MD, 21157
Phone (410) 857-5700
Fax (410) 876-0261
Enumeration date Mar 26, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS 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 Arnold Sindler?
Arnold Sindler 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 → Arnold J Sindler, DDS PA Periodontics · Westminster, MD NPI 1790802411 Jeanette Mitchell Psychiatric/Mental Health Nurse Practitioner · Westminster, MD NPI 1659597185 Addiction Medication Clinic LLC Nurse Practitioner · Westminster, MD NPI 1184208688 Addiction Medication Clinic LLC Mental Health Clinic/Center (Including Community Mental Health Center) · Westminster, MD NPI 1386215705 Anne Maria Ruinge Psychiatric/Mental Health Nurse Practitioner · Westminster, MD NPI 1467122358
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.