Mark E. Stephen MD P.C.
NPI 1639409717 · Orthopaedic Surgery of the Spine Physician · Saint James, NY
Mark E. Stephen MD P.C. is a Orthopaedic Surgery of the Spine Physician organization in Saint James, NY (NPI 1639409717).
Provider details
- NPI number
- 1639409717
- Entity type
- Organization
- Primary specialty
- Orthopaedic Surgery of the Spine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Stephen, Director(631) 656-9517
- License
- 213491 (NY)
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
16 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
- 2010-01-12
- Last updated
- 2010-01-12
Frequently asked questions
- What is Mark E. Stephen MD P.C.'s NPI number?
- Mark E. Stephen MD P.C.'s National Provider Identifier (NPI) is 1639409717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark E. Stephen MD P.C.?
- Mark E. Stephen MD P.C. is classified in the NPPES registry as Orthopaedic Surgery of the Spine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark E. Stephen MD P.C. located?
- Mark E. Stephen MD P.C.'s practice location on file with NPPES is 2 Martingale Gate, Saint James, NY 11780-3546.
- What is Mark E. Stephen MD P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Mark E. Stephen MD P.C. is (631) 656-9517.
- Who is the authorized official for Mark E. Stephen MD P.C.?
- The authorized official listed on Mark E. Stephen MD P.C.'s NPPES record is Mark Stephen, Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark E. Stephen MD P.C.'s NPI active?
- Yes — Mark E. Stephen MD P.C.'s NPI (1639409717) is active in the NPPES registry as of the last update on 2010-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.