Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

J. Andrew Hallberg, MD, LLC

Organization Specialist · NPI 1487770228

J. Andrew Hallberg, MD, LLC is a Specialist in Mystic, Connecticut. Licensed in Connecticut. Registered with an NPI since 2007.

Licensed in
CT
In the registry since
2007
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

56 Whitehall Ave Ste A
Mystic, CT 06355-1967
Phone: (860) 536-0773
Fax: (860) 536-1068
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 029044 (CT)

Record details

NPI number1487770228
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official John Hallberg — Owner · (860) 536-0773
NPI enumeratedMarch 22, 2007
Last updated in NPPESAugust 22, 2020
Mailing address56 Whitehall Ave, Suite A, Mystic, CT 06355-1967

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