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Dr. John Michael Avallone

Ophthalmology Physician in Arnold, MD · enumerated 2006.

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

National Provider Identifier

1205846102

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Registry record

Entity type Individual (Type 1)
Name Dr. John Michael Avallone
Sex Male
Practice address 83 Church Rd, Arnold, MD, 21012
Phone (410) 757-2778
Fax (410) 757-0632
Enumeration date Aug 9, 2006
Last updated in NPPES Aug 6, 2008

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License D36805 (MD) Primary

Other identifiers

Identifier Type State Issuer
406116100 Medicaid MD —
7869439 Other — AETNA PPO
1554500 Other — AETNA HMO
0001 Other — BCBS
61759202 Other — BCBS

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

What is the NPI number for John Avallone?
The National Provider Identifier (NPI) for John Avallone is 1205846102, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Avallone practice?
The practice location on file with NPPES is in Arnold, MD. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-06.