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

David Keith Calderwood, MD

Family Medicine Physician in Huntsville, AL · enumerated 2005.

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

National Provider Identifier

1235110586

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Registry record

Entity type Individual (Type 1)

Name David Keith Calderwood

Credential MD

Sex Male

Practice address Huntsville, AL, 35801

Phone (256) 535-5944

Fax (256) 535-5959

Enumeration date Nov 11, 2005

Last updated in NPPES Feb 2, 2010

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 10438 (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
0004452049	Other	-	AETNA
11461021	Other	-	CAQH
710981219	Other	-	TAX ID
51001645	Other	AL	BLUE CROSS BLUE SHIELD

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

How do I verify David Calderwood's NPI record?

Cross-check NPI 1235110586 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1235110586 active?

Yes, as of the latest NPPES snapshot, NPI 1235110586 is active (record last updated 2010-02-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-02.