Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert C Knowlton, MD

Neurology Physician in Houston, TX · enumerated 2006.

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

National Provider Identifier

1144257601

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Registry record

Entity type Individual (Type 1)

Name Robert C Knowlton

Credential MD

Sex Male

Practice address 6410 Fannin St Ste 1014, Houston, TX, 77030

Phone (713) 512-2239

Enumeration date Jun 28, 2006

Last updated in NPPES Apr 26, 2012

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 22817 (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
000045392	Other	AL	BLUE CROSS
000045392	Medicaid	AL	-
051513177	Other	AL	BLUE CROSS
1953547	Other	LA	EMERGENCY LA MEDICAID
00125120	Other	MS	MISSISSIPPI MEDICAID
130021547	Other	AL	RAILROAD MEDICARE
F64571	Other	AL	VIVA

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 NPI 1144257601 active?

Yes, as of the latest NPPES snapshot, NPI 1144257601 is active (record last updated 2012-04-26).

How do I verify Robert Knowlton's NPI record?

Cross-check NPI 1144257601 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-26.