Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Vassily Mihailoff, MD

Allergy & Immunology Physician in Biddeford, ME · enumerated 2006.

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

National Provider Identifier

1013959618

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. Vassily Mihailoff

Credential MD

Sex Male

Practice address Biddeford, ME, 04005

Phone (207) 284-6114

Fax (207) 282-6118

Enumeration date Jun 11, 2006

Last updated in NPPES Feb 27, 2018

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 012135 (ME) Primary

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
0104586Y0ME01	Other	NH	BLUE CROSS BLUE SHIELD
002110	Other	ME	BLUE CROSS BLUE SHIELD
1042105	Other	ME	AETNA
125300000	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Vassily Mihailoff?

The National Provider Identifier (NPI) for Vassily Mihailoff is 1013959618, a Type 1 (individual) record in the CMS NPPES registry.

Where does Vassily Mihailoff practice?

The practice location on file with NPPES is in Biddeford, ME. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Francis Beaudoin General Practice Dentistry · Biddeford, ME NPI 1336280700 Southern Maine Allergy Associates, PA Allergy Physician · Biddeford, ME NPI 1306963491 Providers Care PA Family Medicine Physician · Biddeford, ME NPI 1407041619 James Faulkner Orthodontics and Dentofacial Orthopedics Dentistry · Biddeford, ME NPI 1376727602 Caroline Thompson Psychologist · Biddeford, ME NPI 1700119245

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-27.