NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Christian F Maluf, MD, FACP, FCCP.

Pulmonary Disease Physician in Green Bay, WI · enumerated 2006.

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

National Provider Identifier

1548223464

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Christian F Maluf
Credential MD, FACP, FCCP.
Sex Male
Practice address 744 S Webster Ave, Green Bay, WI, 54301
Phone (920) 445-7222
Fax (920) 445-7289
Enumeration date Apr 11, 2006
Last updated in NPPES Jun 10, 2020

Taxonomy & licenses

207RH0002X Hospice and Palliative Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License L4554 (TX) Secondary
207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License L4554 (TX) Secondary
207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 73395-20 (WI) 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
ABIM-MOC Other - AMERICAN BOARD OF INTERNAL MEDICINE/PULMONARY DISEASE
00900V Medicaid TX -

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

What specialty is Christian Maluf?
Christian Maluf is registered in NPPES with the primary taxonomy of Pulmonary Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-10.