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

Jonathan C Fellers MD PA LLC

Organization Addiction (Substance Use Disorder) Counselor · NPI 1457823817

Jonathan C Fellers MD PA LLC is an Addiction (Substance Use Disorder) Counselor in Portland, Maine. Registered with an NPI since 2018.

In the registry since
2018
Specialties on file
8
What do these letters mean?
PA — Professional association
A form of business registration, not a clinical qualification.
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1 City Ctr Ste 8130
Portland, ME 04101-6420
Phone: (207) 221-0635
Fax: (207) 221-0634
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Multi-Specialty Clinic/Center (primary) Taxonomy 261QM1300X
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X
Mental Health Counselor Taxonomy 101YM0800X
Independent Medical Examiner Physician Taxonomy 202C00000X
Addiction Medicine (Preventive Medicine) Physician Taxonomy 2083A0300X
Psychiatry Physician Taxonomy 2084P0800X
Addiction Psychiatry Physician Taxonomy 2084P0802X
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X

Record details

NPI number1457823817
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Jonathan Fellers — Owner · (207) 221-0635
Other names Cortex Behavioral Health
NPI enumeratedDecember 26, 2018
Last updated in NPPESAugust 22, 2025
Certification dateAugust 22, 2025
Mailing address1 City Ctr Ste 8130, Portland, ME 04101-6420

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