Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Heather Block, LAC, MAC

Acupuncturist in Washington, DC · enumerated 2010.

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

National Provider Identifier

1659689057

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Registry record

Entity type Individual (Type 1)

Name Heather Block

Credential LAC, MAC

Sex Female

Practice address Washington, DC, 20003

Phone (202) 531-3193

Enumeration date Sep 20, 2010

Last updated in NPPES Sep 15, 2014

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License U01842 (MD) Secondary

171100000X Acupuncturist Other Service Providers · License AC500135 (DC) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Heather Block practice?

The practice location on file with NPPES is in Washington, DC. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Heather Block?

The National Provider Identifier (NPI) for Heather Block is 1659689057, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-15.