Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mahnaz Mellati, M.D.

Endocrinology, Diabetes & Metabolism Physician in Seattle, WA · enumerated 2011.

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

National Provider Identifier

1326331513

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Registry record

Entity type Individual (Type 1)

Name Mahnaz Mellati

Credential M.D.

Sex Female

Practice address 1101 Madison St Ste 1270, Seattle, WA, 98104

Phone (206) 796-3636

Fax (334) 714-7958

Enumeration date May 19, 2011

Last updated in NPPES Oct 9, 2024

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License MD 60443675 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1326331513	Medicaid	WA	-

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

Where does Mahnaz Mellati practice?

The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mahnaz Mellati?

The National Provider Identifier (NPI) for Mahnaz Mellati is 1326331513, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Ashley Fuller Obstetrics & Gynecology Physician · Seattle, WA NPI 1912100116 Lori Cooper Endocrinology, Diabetes & Metabolism Physician · Seattle, WA NPI 1497078091 Seattle Endocrine Pllc Endocrinology, Diabetes & Metabolism Physician · Seattle, WA NPI 1568160158 Seattle Concierge Ob Gyn Pllc Obstetrics & Gynecology Physician · Seattle, WA NPI 1619738341 Ashley Fuller, MD Pllc Clinic/Center · Seattle, WA NPI 1588411573 Nazlee Navabi MD Pllc Primary Care Clinic/Center · Seattle, WA NPI 1922954007

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-09.