William Simister, P.A.
NPI 1659576460 · Physician Assistant · Baltimore, MD
William Simister, P.A. is a Physician Assistant provider in Baltimore, MD (NPI 1659576460).
Provider details
- NPI number
- 1659576460
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- No
- License
- C0001064 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2007-06-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Simister's NPI number?
- William Simister's National Provider Identifier (NPI) is 1659576460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Simister's specialty?
- William Simister is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Simister located?
- William Simister's practice location on file with NPPES is 900 Caton Avenue, Baltimore, MD 21229.
- What is William Simister's phone number?
- The practice phone number listed in the NPPES registry for William Simister is (410) 368-2414.
- Is William Simister's NPI active?
- Yes — William Simister's NPI (1659576460) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.