Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Paul L. Gunderson, M.D.
Ophthalmology Physician in Ayer, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346260726
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Registry record
Entity type Individual (Type 1)
Name Paul L. Gunderson
Credential M.D.
Sex Male
Practice address 190 Groton Rd, Ayer, MA, 01432
Phone (978) 772-4000
Fax (978) 772-3066
Enumeration date Jul 20, 2006
Last updated in NPPES Jun 9, 2008
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 |
|---|---|---|---|
| 2039141 | Medicaid | MA | - |
| 99904033 | Medicaid | NH | - |
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 Paul Gunderson?
The National Provider Identifier (NPI) for Paul Gunderson is 1346260726, a Type 1 (individual) record in the CMS NPPES registry.
Where does Paul Gunderson practice?
The practice location on file with NPPES is in Ayer, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Jeffrey Arpin Surgery Physician · Ayer, MA NPI 1285630988 Jonathan Held Specialist · Ayer, MA NPI 1699767608 Paul Harasimowicz Specialist · Ayer, MA NPI 1538152574 Asha Naidu Infectious Disease Physician · Ayer, MA NPI 1669447579 Primary Care Specialists Inc. Primary Care Clinic/Center · Ayer, MA NPI 1346208196 Deanna Kardoos Physician Assistant · Ayer, MA NPI 1386693885 Lotus Med LLC Health Maintenance Organization · Ayer, MA NPI 1447201140 Nashoba Valley Urology, Inc Specialist · Ayer, MA NPI 1720031248
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-09.