Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Anthony Porcarelli Markuson, MD

Family Medicine Physician in Homer, AK · enumerated 2018 · practices at Kachemak Bay Family Planning Clinic.

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

National Provider Identifier

1326538331

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Registry record

Entity type Individual (Type 1)

Name Anthony Porcarelli Markuson

Credential MD

Sex Male

Practice address 3959 Ben Walters Ln, Homer, AK, 99603

Phone (907) 235-3436

Enumeration date May 15, 2018

Last updated in NPPES Jan 27, 2026

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 189925 (AK) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1326538331 active?

Yes, as of the latest NPPES snapshot, NPI 1326538331 is active (record last updated 2026-01-27).

How do I verify Anthony Porcarelli Markuson's NPI record?

Cross-check NPI 1326538331 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Sonja Martin Young Advanced Practice Midwife · Homer, AK NPI 1437291788 Kachemak Bay Family Planning Clinic Non-Surgical Family Planning Clinic/Center · Homer, AK NPI 1477684561

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-27.