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

O & O Alpan, LLC

Organization Allergy & Immunology Physician · NPI 1194870311

O & O Alpan, LLC is an Allergy & Immunology Physician in Bethesda, Maryland. Licensed in Maryland. Registered with an NPI since 2007.

Licensed in
MD
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

5511 Oakmont Ave
Bethesda, MD 20817-3527
Phone: (240) 643-6002
Fax: (301) 530-7424
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence D0052272 (MD)

Record details

NPI number1194870311
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Oral Alpan — Manager · (240) 643-6002
NPI enumeratedJanuary 25, 2007
Last updated in NPPESAugust 22, 2020
Mailing address5511 Oakmont Ave, Bethesda, MD 20817-3527

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