Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Arnold J Willis, MD
Urology Physician in Keene, NH · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275525545
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Registry record
Entity type Individual (Type 1)
Name Dr. Arnold J Willis
Credential MD
Sex Male
Practice address 590 Court St, Keene, NH, 03431
Phone (603) 354-5400
Enumeration date Aug 22, 2005
Last updated in NPPES Jun 25, 2020
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 |
|---|---|---|---|
| 1095850 | Other | - | CIGNA |
| 028055 | Other | - | JOHN HOPKINS |
| 1901104 | Other | - | UNITED HEALTHCARE AMERICHOICE |
| P00439848 | Other | - | RAILROAD MEDICARE |
| 023376900 | Medicaid | DC | - |
| 028055 | Other | - | PRIORITY PARTNERS |
| 1467393 | Other | - | AETNA HMO |
| 35301905 | Other | - | BCBS MD |
| 57620005 | Other | - | BCBS DC |
| 4053748 | Other | - | AETNA PPO |
| 35301902 | Other | - | BCBS MD |
| 45428 | Other | - | OPTIMUM CHOICE |
| 432105237 | Other | - | BRAVO HEALTH |
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
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 Arnold Willis?
Arnold Willis is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Marika Henegan Family Medicine Physician · Keene, NH NPI 1477558385 Remeline Damasco Internal Medicine Physician · Keene, NH NPI 1275520009 Michael O'Shea Nephrology Physician · Keene, NH NPI 1831189927 Larry Robbins Anesthesiology Physician · Keene, NH NPI 1710978838 Randall Long Neurology Physician · Keene, NH NPI 1265416119 Todd Fontaine Anesthesiology Physician · Keene, NH NPI 1992780613 Sherry Guardiano Rheumatology Physician · Keene, NH NPI 1043290596 Robert Pritchard Hematology & Oncology Physician · Keene, NH NPI 1598745796
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-25.