Mark Klapholz, MD
NPI 1669566436 · Gastroenterology Physician · New Hyde Park, NY
Mark Klapholz, MD is a Gastroenterology Physician provider in New Hyde Park, NY (NPI 1669566436).
Provider details
- NPI number
- 1669566436
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 143452 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2006-10-03
- Last updated
- 2010-11-09
Frequently asked questions
- What is Mark Klapholz's NPI number?
- Mark Klapholz's National Provider Identifier (NPI) is 1669566436, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Klapholz's specialty?
- Mark Klapholz is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Klapholz located?
- Mark Klapholz's practice location on file with NPPES is 444 Lakeville Road, New Hyde Park, NY 11042-1165.
- What is Mark Klapholz's phone number?
- The practice phone number listed in the NPPES registry for Mark Klapholz is (516) 354-7660.
- Is Mark Klapholz's NPI active?
- Yes — Mark Klapholz's NPI (1669566436) is active in the NPPES registry as of the last update on 2010-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.