Katherine Alexander, FNP
NPI 1821356494 · Family Nurse Practitioner · New York, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Alexander, FNP is a Family Nurse Practitioner provider in New York, NY (NPI 1821356494).
Provider details
- NPI number
- 1821356494
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 336181 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 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.
$20 across 1 record (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
- 2012-05-02
- Last updated
- 2017-01-31
Frequently asked questions
- What is Katherine Alexander's NPI number?
- Katherine Alexander's National Provider Identifier (NPI) is 1821356494, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Alexander's specialty?
- Katherine Alexander is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Alexander located?
- Katherine Alexander's practice location on file with NPPES is 30 Broad St, New York, NY 10004-2304.
- What is Katherine Alexander's phone number?
- The practice phone number listed in the NPPES registry for Katherine Alexander is (212) 530-0630.
- Does Katherine Alexander accept Medicare?
- Katherine Alexander is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Alexander's NPI active?
- Yes — Katherine Alexander's NPI (1821356494) is active in the NPPES registry as of the last update on 2017-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.