NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Robert John Knowling, M.D.

Plastic and Reconstructive Surgery Physician in Huntsville, AL · enumerated 2006.

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

National Provider Identifier

1528022753

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Robert John Knowling
Credential M.D.
Sex Male
Practice address Huntsville, AL, 35801
Phone (256) 881-4212
Fax (256) 881-4246
Enumeration date Apr 14, 2006
Last updated in NPPES Aug 23, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2086S0122X Plastic and Reconstructive Surgery Physician Allopathic & Osteopathic Physicians · License 00014300 (AL) 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
051027322 Other AL BLUE CROSS BLUE SHIELD
000027322 Medicaid AL -

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 Robert Knowling practice?
The practice location on file with NPPES is in Huntsville, AL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Robert Knowling?
The National Provider Identifier (NPI) for Robert Knowling is 1528022753, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-23.