Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Jack Lendon Ritter, M. D.
Specialist in The Woodlands, TX · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366440489
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Registry record
Entity type Individual (Type 1)
Name Dr. Jack Lendon Ritter
Credential M. D.
Sex Male
Practice address 8850 Six Pines Dr., Suite 100, The Woodlands, TX, 77380
Phone (281) 367-6836
Fax (281) 681-5187
Enumeration date Jul 12, 2005
Last updated in NPPES Jul 9, 2007
Taxonomy & licenses
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 |
|---|---|---|---|
| 2816989-024 | Other | TX | CIGNA |
| 3231590 | Other | TX | AETNA HMO |
| 2816989-023 | Other | TX | CIGNA |
| 2816989-025 | Other | TX | CIGNA |
| 34239 | Other | TX | AMERICAID |
| 4211340 | Other | TX | AETNA PPO |
| 8J1222 | Other | TX | BCBS PROVIDER # |
| P00064361 | Other | TX | MEDICARE RAILROAD |
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.
Frequently asked questions
Where does Jack Ritter practice?
The practice location on file with NPPES is in The Woodlands, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jack Ritter?
The National Provider Identifier (NPI) for Jack Ritter is 1366440489, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.