Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John L Walters, OD
Optometrist in Portland, ME · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689670762
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Registry record
Entity type Individual (Type 1)
Name John L Walters
Credential OD
Sex Male
Practice address 15 Lowell St, Portland, ME, 04102
Phone (207) 774-8277
Fax (207) 699-5850
Enumeration date Jun 23, 2005
Last updated in NPPES Oct 12, 2023
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 253720099 | Medicaid | ME | - |
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
What is the NPI number for John Walters?
The National Provider Identifier (NPI) for John Walters is 1689670762, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Walters practice?
The practice location on file with NPPES is in Portland, ME. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Robert Cady Glaucoma Specialist (Ophthalmology) Physician · Portland, ME NPI 1174529564 Frank Read Ophthalmology Physician · Portland, ME NPI 1295731677 Frederick Miller Ophthalmology Physician · Portland, ME NPI 1376549402 Charles Zacks Ophthalmology Physician · Portland, ME NPI 1790781839 Nirupama Aggarwal Optometrist · Portland, ME NPI 1871599928 Peter Hedstrom Ophthalmology Physician · Portland, ME NPI 1902802028 Jill Amundson Optometrist · Portland, ME NPI 1710983861 Natan Kahn Ophthalmic Plastic and Reconstructive Surgery Physician · Portland, ME NPI 1568468635
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-12.