Short answer: YES! 

From the  Vanguard site:

https://personal.vanguard.com/us/accounttypes/services/ATSEnhancedServCriteriaContent.jsp

"See how you qualify for enhanced services

Membership is based on total household assets held at Vanguard, with a minimum of $100,000 to qualify for Vanguard Voyager Services, $500,000 for Vanguard Voyager Select Services, and $1 million for Vanguard Flagship Services. We determine membership by aggregating assets of all eligible accounts held by the investor and his or her immediate family members who reside at the same address, including investments in Vanguard mutual funds, Vanguard ETFs, annuities through Vanguard, The Vanguard 529 Plan, certain small-business accounts, and employer-sponsored retirement plans for which Vanguard provides recordkeeping services.

Qualification criteria (for example, asset levels) for Vanguard's enhanced services are subject to periodic review by Vanguard and may change at any time. Vanguard reserves the right to discontinue membership in any enhanced service or reassign any investor, without prior notification, to the appropriate service level if the investor fails to continue to meet the applicable qualification criteria. Vanguard reserves the right to amend or cancel selected features and benefits at any time without prior notification.

In addition, ongoing access by any particular investor to individual services, discounts, and exemptions is subject to periodic review and may be restricted based upon criteria established solely by Vanguard. While Vanguard enhanced services are complimentary, some underlying services may charge fees and expenses. Vanguard does not guarantee any level of service.