Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Miss Lois Ann Hartnack, MA, LAC, ATR-BC
Counselor in Montclair, NJ · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1407176431
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Registry record
Entity type Individual (Type 1)
Name Miss Lois Ann Hartnack
Credential MA, LAC, ATR-BC
Sex Female
Practice address 100 Valley Rd, Suite 12, Montclair, NJ, 07042
Phone (732) 259-5641
Fax (732) 906-0349
Enumeration date Jun 1, 2010
Last updated in NPPES Jun 1, 2010
Taxonomy & licenses
LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture.
About the LAC 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 Lois Hartnack?
Lois Hartnack is registered in NPPES with the primary taxonomy of Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-01.