Warren Hammerschlag, MD
NPI 1104981679 · Orthopaedic Surgery Physician · Paramus, NJ
Warren Hammerschlag, MD is a Orthopaedic Surgery Physician provider in Paramus, NJ (NPI 1104981679).
Provider details
- NPI number
- 1104981679
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA05170900 (NJ)
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
- 2006-12-26
- Last updated
- 2015-08-13
Frequently asked questions
- What is Warren Hammerschlag's NPI number?
- Warren Hammerschlag's National Provider Identifier (NPI) is 1104981679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Hammerschlag's specialty?
- Warren Hammerschlag is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Warren Hammerschlag located?
- Warren Hammerschlag's practice location on file with NPPES is 22 Madison Ave, Paramus, NJ 07652-2734.
- What is Warren Hammerschlag's phone number?
- The practice phone number listed in the NPPES registry for Warren Hammerschlag is (201) 977-6960.
- Is Warren Hammerschlag's NPI active?
- Yes — Warren Hammerschlag's NPI (1104981679) is active in the NPPES registry as of the last update on 2015-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.