Olivia Flaherty, FNP-C
NPI 1457134926 · Nurse Practitioner · Michigan City, IN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Olivia Flaherty, FNP-C is a Nurse Practitioner provider in Michigan City, IN (NPI 1457134926).
Provider details
- NPI number
- 1457134926
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 2821399AA (IN)
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 tenure28% of score
2 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
173 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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 96 | $95 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 62 | $136 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 15 | $135 |
Typical Medicare-allowed amounts for these services range $95–$136 (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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ibuprofen | 43 | 41 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 37 | 36 |
| Cephalexin | 26 | 26 |
| Cyclobenzaprine Hcl | 22 | 21 |
| Ondansetronbrand: Ondansetron Odt | 22 | 22 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 770 Indian Boundary RdChesterton, IN 46304-1519Phone: (219) 921-2000
Registry dates
- Enumerated
- 2023-08-17
- Last updated
- 2026-01-27
- Certified
- 2026-01-27
Frequently asked questions
- What is Olivia Flaherty's NPI number?
- Olivia Flaherty's National Provider Identifier (NPI) is 1457134926, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olivia Flaherty's specialty?
- Olivia Flaherty is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Olivia Flaherty located?
- Olivia Flaherty's practice location on file with NPPES is 3500 Franciscan Way, Michigan City, IN 46360-0021.
- What is Olivia Flaherty's phone number?
- The practice phone number listed in the NPPES registry for Olivia Flaherty is (219) 877-1616.
- Does Olivia Flaherty accept Medicare?
- Olivia Flaherty is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Olivia Flaherty's NPI active?
- Yes — Olivia Flaherty's NPI (1457134926) is active in the NPPES registry as of the last update on 2026-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.