Claire Kiefer, RN, FNP
NPI 1407239635 · Family Nurse Practitioner · Brooklyn, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Claire Kiefer, RN, FNP is a Family Nurse Practitioner provider in Brooklyn, NY (NPI 1407239635).
Provider details
- NPI number
- 1407239635
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RN, FNP
- Sex
- Female
- Sole proprietor
- No
- License
- F340252-1 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
51 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 37 | $65 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 14 | $37 |
Typical Medicare-allowed amounts for these services range $37–$65 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 75 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 292 | 88 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 212 | 31 |
| Amlodipine Besylate | 146 | 39 |
| Fluticasone Propionate | 107 | 26 |
| Lisinopril | 91 | 22 |
| Gabapentin | 87 | 20 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$98 across 3 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
- 2015-07-07
- Last updated
- 2021-08-10
- Certified
- 2021-08-10
Frequently asked questions
- What is Claire Kiefer's NPI number?
- Claire Kiefer's National Provider Identifier (NPI) is 1407239635, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Claire Kiefer's specialty?
- Claire Kiefer is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Claire Kiefer located?
- Claire Kiefer's practice location on file with NPPES is 514 49th St, Brooklyn, NY 11220-2010.
- What is Claire Kiefer's phone number?
- The practice phone number listed in the NPPES registry for Claire Kiefer is (718) 437-5280.
- Does Claire Kiefer accept Medicare?
- Claire Kiefer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Claire Kiefer's NPI active?
- Yes — Claire Kiefer's NPI (1407239635) is active in the NPPES registry as of the last update on 2021-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.