William Arnold, P.A.-C
NPI 1255351359 · Physician Assistant · Baltimore, MD
William Arnold, P.A.-C is a Physician Assistant provider in Baltimore, MD (NPI 1255351359).
Provider details
- NPI number
- 1255351359
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.-C
- Sex
- Male
- Sole proprietor
- No
- License
- C0002873 (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
- 2006-07-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Arnold's NPI number?
- William Arnold's National Provider Identifier (NPI) is 1255351359, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Arnold's specialty?
- William Arnold is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Arnold located?
- William Arnold's practice location on file with NPPES is 3333 N Calvert St, Baltimore, MD 21218-2867.
- What is William Arnold's phone number?
- The practice phone number listed in the NPPES registry for William Arnold is (410) 554-2270.
- Is William Arnold's NPI active?
- Yes — William Arnold's NPI (1255351359) 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.