NPI Portal NPI Lookup & Verification

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

Dr. Charles Richard Underwood, MD

Family Medicine Physician in Naples, FL · enumerated 2006.

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

National Provider Identifier

1629131586

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Registry record

Entity type Individual (Type 1)
Name Dr. Charles Richard Underwood
Credential MD
Sex Male
Practice address Naples, FL, 34102
Phone (239) 595-6687
Enumeration date Dec 19, 2006
Last updated in NPPES May 14, 2014

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 ME38081 (FL) 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
080054636 Other FL RR MC
30421 Other FL BC BS

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 Charles Underwood's NPI record?
Cross-check NPI 1629131586 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1629131586 active?
Yes, as of the latest NPPES snapshot, NPI 1629131586 is active (record last updated 2014-05-14).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-05-14.