NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melinda Ellen Stack, M.D.

Colon & Rectal Surgery Physician in Chicago, IL · enumerated 2011 · practices at Kim & Mizera Surgical Associates Sc.

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

National Provider Identifier

1215223490

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Melinda Ellen Stack
Credential M.D.
Sex Female
Practice address 5140 N California Ave Ste 560, Chicago, IL, 60625
Fax (847) 982-1098
Enumeration date Jun 25, 2011
Last updated in NPPES Oct 14, 2021

Taxonomy & licenses

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License 036135948 (IL) 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

How do I verify Melinda Stack's NPI record?
Cross-check NPI 1215223490 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1215223490 active?
Yes, as of the latest NPPES snapshot, NPI 1215223490 is active (record last updated 2021-10-14).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-14.