Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Holly Herzfeld, LLC

Organization Mental Health Counselor · NPI 1558270215

Holly Herzfeld, LLC provides Mental Health Counselor services in Portland, Maine. Registered with an NPI since 2026.

In the registry since
2026
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

57 Exchange St Ste 203
Portland, ME 04101-5000
Phone: (202) 834-0688
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X

Record details

NPI number1558270215
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Holly Herzfeld — Owner · (202) 834-0688
NPI enumeratedSeptember 7, 2026
Last updated in NPPESSeptember 7, 2026
Certification dateSeptember 7, 2026
Mailing address150 Eastern Promenade, Portland, ME 04101-4423

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