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Potomac Family Allergy and Asthma, LLC

Allergy Physician in Rockville, MD · enumerated 2007 · authorized official Heidi Isenberg-Feig, Owner.

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

National Provider Identifier

1578601795

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Registry record

Entity type Organization (Type 2)
Legal business name Potomac Family Allergy and Asthma, LLC
Practice address 11119 Rockville Pike, Suite 502, Rockville, MD, 20852
Phone (301) 770-7007
Fax (301) 770-7107
Enumeration date Feb 1, 2007
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License D0056547 (MD) Primary

Authorized official

Name Heidi Isenberg-Feig
Title Owner
Phone (301) 770-7007

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.

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Frequently asked questions

Who is the authorized official for Potomac Family Allergy and Asthma, LLC?
NPPES lists Heidi Isenberg-Feig (Owner) as the authorized official for this organization.
What is the NPI number for Potomac Family Allergy and Asthma, LLC?
The NPI for Potomac Family Allergy and Asthma, LLC is 1578601795, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.