Mark Stephan, PA
NPI 1699886614 · Surgical Physician Assistant · Williamsville, NY
Mark Stephan, PA is a Surgical Physician Assistant provider in Williamsville, NY (NPI 1699886614).
Provider details
- NPI number
- 1699886614
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- 010867 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-08-31
- Last updated
- 2014-07-09
Frequently asked questions
- What is Mark Stephan's NPI number?
- Mark Stephan's National Provider Identifier (NPI) is 1699886614, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Stephan's specialty?
- Mark Stephan is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Stephan located?
- Mark Stephan's practice location on file with NPPES is 55 Spindrift Dr, Williamsville, NY 14221-7800.
- What is Mark Stephan's phone number?
- The practice phone number listed in the NPPES registry for Mark Stephan is (716) 447-6310.
- Is Mark Stephan's NPI active?
- Yes — Mark Stephan's NPI (1699886614) is active in the NPPES registry as of the last update on 2014-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.