Karen Hammer, DDS
NPI 1952472755 · General Practice Dentistry · Massapequa, NY
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Hammer, DDS is a General Practice Dentistry provider in Massapequa, NY (NPI 1952472755).
Provider details
- NPI number
- 1952472755
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Female
- Sole proprietor
- Yes
- License
- 32863 (NY)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$767 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2008-10-30
Frequently asked questions
- What is Karen Hammer's NPI number?
- Karen Hammer's National Provider Identifier (NPI) is 1952472755, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Hammer's specialty?
- Karen Hammer is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Karen Hammer located?
- Karen Hammer's practice location on file with NPPES is 847 N Broadway, Massapequa, NY 11758-2373.
- What is Karen Hammer's phone number?
- The practice phone number listed in the NPPES registry for Karen Hammer is (516) 798-0850.
- Does Karen Hammer accept Medicare?
- Karen Hammer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Hammer's NPI active?
- Yes — Karen Hammer's NPI (1952472755) is active in the NPPES registry as of the last update on 2008-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.