Karlen Katz, DNP, APRN, FNP-C
NPI 1215547534 · Family Nurse Practitioner · New Haven, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karlen Katz, DNP, APRN, FNP-C is a Family Nurse Practitioner provider in New Haven, CT (NPI 1215547534).
Provider details
- NPI number
- 1215547534
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, APRN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 9055 (CT)
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 tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
181 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 79 | $45 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 74 | $71 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 14 | $73 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 14 | $104 |
Typical Medicare-allowed amounts for these services range $45–$104 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-08-02
- Last updated
- 2020-12-04
- Certified
- 2020-12-04
Frequently asked questions
- What is Karlen Katz's NPI number?
- Karlen Katz's National Provider Identifier (NPI) is 1215547534, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karlen Katz's specialty?
- Karlen Katz is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karlen Katz located?
- Karlen Katz's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Karlen Katz's phone number?
- The practice phone number listed in the NPPES registry for Karlen Katz is (203) 688-4748.
- Does Karlen Katz accept Medicare?
- Karlen Katz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karlen Katz's NPI active?
- Yes — Karlen Katz's NPI (1215547534) is active in the NPPES registry as of the last update on 2020-12-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.