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

Robert Paul Lehmann, M.D.

Ophthalmology Physician in Nacogdoches, TX · enumerated 2006.

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

National Provider Identifier

1942268743

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Registry record

Entity type Individual (Type 1)

Name Robert Paul Lehmann

Credential M.D.

Sex Male

Practice address Nacogdoches, TX, 75965

Phone (936) 569-8278

Fax (936) 569-0275

Enumeration date May 2, 2006

Last updated in NPPES Sep 24, 2012

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License E3993 (TX) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License E3993 (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
826181010	Other	TX	RR MEDICARE
136167701	Medicaid	TX	-
13167705	Medicaid	TX	-
136167708	Medicaid	TX	-

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Robert Lehmann?

Robert Lehmann is registered in NPPES with the primary taxonomy of Ophthalmology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-24.