Siobhan Harder, APRN
NPI 1588032866 · Family Nurse Practitioner · Essex, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siobhan Harder, APRN is a Family Nurse Practitioner provider in Essex, CT (NPI 1588032866).
Provider details
- NPI number
- 1588032866
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 6307 (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
10 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
256 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 Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 129 | $68 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 49 | $99 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 48 | $81 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 16 | $149 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 14 | $113 |
Typical Medicare-allowed amounts for these services range $68–$149 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 25 | 22 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 22 | 22 |
| Prednisone | 18 | 17 |
| Azithromycin | 17 | 16 |
| Cephalexin | 16 | 16 |
| Doxycycline Hyclate | 16 | 15 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 16 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-09-03
- Last updated
- 2026-02-05
- Certified
- 2026-02-05
Frequently asked questions
- What is Siobhan Harder's NPI number?
- Siobhan Harder's National Provider Identifier (NPI) is 1588032866, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siobhan Harder's specialty?
- Siobhan Harder is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Siobhan Harder located?
- Siobhan Harder's practice location on file with NPPES is 147 Westbrook Rd, Essex, CT 06426-1512.
- What is Siobhan Harder's phone number?
- The practice phone number listed in the NPPES registry for Siobhan Harder is (860) 358-5065.
- Does Siobhan Harder accept Medicare?
- Siobhan Harder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siobhan Harder's NPI active?
- Yes — Siobhan Harder's NPI (1588032866) is active in the NPPES registry as of the last update on 2026-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.