William B Ershler
NPI 1083895866 · Hematology & Oncology Physician · Falls Church, VA
William B Ershler is a Hematology & Oncology Physician organization in Falls Church, VA (NPI 1083895866).
Provider details
- NPI number
- 1083895866
- Entity type
- Organization
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- William Ershler, Physician(703) 241-1010
- License
- 0101054727 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-11-20
- Last updated
- 2011-11-16
Frequently asked questions
- What is William B Ershler's NPI number?
- William B Ershler's National Provider Identifier (NPI) is 1083895866, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William B Ershler?
- William B Ershler is classified in the NPPES registry as Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is William B Ershler located?
- William B Ershler's practice location on file with NPPES is 6400 Arlington Blvd, Falls Church, VA 22042-2325.
- What is William B Ershler's phone number?
- The practice phone number listed in the NPPES registry for William B Ershler is (703) 241-1010.
- Who is the authorized official for William B Ershler?
- The authorized official listed on William B Ershler's NPPES record is William Ershler, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William B Ershler's NPI active?
- Yes — William B Ershler's NPI (1083895866) is active in the NPPES registry as of the last update on 2011-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.