Mark Greenspan
NPI 1932526555 · Adult Reconstructive Orthopaedic Surgery Physician · Sherman Oaks, CA
Mark Greenspan is a Adult Reconstructive Orthopaedic Surgery Physician organization in Sherman Oaks, CA (NPI 1932526555).
Provider details
- NPI number
- 1932526555
- Entity type
- Organization
- Primary specialty
- Adult Reconstructive Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Greenspan, Orthopedic Surgeon(818) 933-6582
- License
- A033341 (CA)
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
12 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
Other names (DBA / former)
- Doing business as
- Mark Greenspan M.D.
Registry dates
- Enumerated
- 2014-03-20
- Last updated
- 2014-03-20
Frequently asked questions
- What is Mark Greenspan's NPI number?
- Mark Greenspan's National Provider Identifier (NPI) is 1932526555, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark Greenspan?
- Mark Greenspan is classified in the NPPES registry as Adult Reconstructive Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Greenspan located?
- Mark Greenspan's practice location on file with NPPES is 4955 Van Nuys Blvd Ste 704, Sherman Oaks, CA 91403-1819.
- What is Mark Greenspan's phone number?
- The practice phone number listed in the NPPES registry for Mark Greenspan is (818) 789-6196.
- Who is the authorized official for Mark Greenspan?
- The authorized official listed on Mark Greenspan's NPPES record is Mark Greenspan, Orthopedic Surgeon. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark Greenspan's NPI active?
- Yes — Mark Greenspan's NPI (1932526555) is active in the NPPES registry as of the last update on 2014-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.