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Dr. Alden Posner Zwerling, M.D.

Family Medicine Physician in Denver, CO · enumerated 2006 · practices at Oak Street Health Physicians Group of Colorado, Pllc.

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

National Provider Identifier

1316987852

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Registry record

Entity type Individual (Type 1)
Name Dr. Alden Posner Zwerling
Credential M.D.
Sex Male
Practice address 2087 S Federal Blvd, Denver, CO, 80219
Phone (720) 463-6754
Fax (720) 640-3312
Enumeration date Jun 6, 2006
Last updated in NPPES Jan 6, 2025

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License ME90332 (FL) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License G48415 (CA) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License DR.0069761 (CO) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

What is the NPI number for Alden Zwerling?
The National Provider Identifier (NPI) for Alden Zwerling is 1316987852, a Type 1 (individual) record in the CMS NPPES registry.
Where does Alden Zwerling practice?
The practice location on file with NPPES is in Denver, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-06.