NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Lisa Merle Peck, M.D.

Internal Medicine Physician in Deerfield, IL · enumerated 2006.

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

National Provider Identifier

1679539563

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Registry record

Entity type Individual (Type 1)
Name Ms. Lisa Merle Peck
Credential M.D.
Sex Female
Practice address 350 S Waukegan Rd Ste 100&200, Deerfield, IL, 60015
Phone (847) 535-7157
Fax (224) 271-4332
Enumeration date Apr 21, 2006
Last updated in NPPES Sep 11, 2023

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036-086705 (IL) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036086705 (IL) 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
036086705 Medicaid IL -
036-086705 Medicaid IL -

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

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Lisa Peck?
Lisa Peck is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-11.