Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Matthew Caldwell, M.D.

Cornea and External Diseases Specialist Physician in San Antonio, TX · enumerated 2007 · practices at Alamo Eye Surgery Center Pllc.

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

National Provider Identifier

1669594859

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Matthew Caldwell

Credential M.D.

Sex Male

Practice address 5430 Fredericksburg Rd Ste 100, San Antonio, TX, 78229

Phone (210) 340-1212

Fax (210) 525-9617

Enumeration date Apr 6, 2007

Last updated in NPPES Feb 21, 2023

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 01061243A (IN) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 2007-00928 (NC) Secondary

207WX0120X Cornea and External Diseases Specialist Physician Allopathic & Osteopathic Physicians · License 2007-00928 (NC) Secondary

207WX0120X Cornea and External Diseases Specialist Physician Allopathic & Osteopathic Physicians · License T1655 (TX) 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
5907083	Medicaid	NC	-
145YX	Other	NC	BCBS PROVIDER NUMBER

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

Is NPI 1669594859 active?

Yes, as of the latest NPPES snapshot, NPI 1669594859 is active (record last updated 2023-02-21).

How do I verify Matthew Caldwell's NPI record?

Cross-check NPI 1669594859 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Mark Carolan Optometrist · San Antonio, TX NPI 1073516241 Melanie Gonzalez-Oliva Optometrist · San Antonio, TX NPI 1871725036 Gregory Brunin Ophthalmology Physician · San Antonio, TX NPI 1043579733 Megan Gauntt Neonatal Nurse Practitioner · San Antonio, TX NPI 1053758862 Anhtuan Nguyen Ophthalmology Physician · San Antonio, TX NPI 1821403510 Michael Offutt Ophthalmology Physician · San Antonio, TX NPI 1720571185 Alamo Eye Surgery Center Pllc Ambulatory Surgical Clinic/Center · San Antonio, TX NPI 1669164638

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-21.