Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mendelis Mental Health Center LLC

Psychiatry Physician in Waldorf, MD · enumerated 2006 · authorized official Peter Mendelis, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1053408377

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Registry record

Entity type Organization (Type 2)

Legal business name Mendelis Mental Health Center LLC

Practice address 11315 Pembrooke Sq Ste 112, Waldorf, MD, 20603

Phone (301) 638-5001

Fax (301) 638-5003

Enumeration date Oct 6, 2006

Last updated in NPPES Nov 15, 2011

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 12909 (MD) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License D0025586 (MD) Primary

Authorized official

Name Peter Mendelis

Title Owner

Phone (301) 638-5001

Other identifiers

Identifier	Type	State	Issuer
546610500	Medicaid	MD	-
950006501	Medicaid	MD	-

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.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-11-15. Verify at npiregistry.cms.hhs.gov.

Where is Mendelis Mental Health Center LLC located?

The practice location on file with NPPES is in Waldorf, MD.

Providers at this address

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Dainty Jackson Family Medicine Physician · Waldorf, MD NPI 1194765834

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-15.