Theresa Giannini, NP
NPI 1588775571 · Adult Health Nurse Practitioner · Indianapolis, IN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Giannini, NP is a Adult Health Nurse Practitioner provider in Indianapolis, IN (NPI 1588775571).
Provider details
- NPI number
- 1588775571
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 71001965A (IN)
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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
318 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 291 | $101 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 27 | $142 |
Typical Medicare-allowed amounts for these services range $101–$142 (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 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 339 | 122 |
| Furosemide | 304 | 96 |
| Atorvastatin Calcium | 291 | 92 |
| Apixabanbrand: Eliquis | 257 | 72 |
| Amlodipine Besylate | 151 | 48 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 121 | 37 |
Practice location
Mailing address
Additional practice locations (2)
- 1111 Ronald Reagan PkwyAvon, IN 46123-7085Phone: (317) 962-0280
- 11725 Illinois StCarmel, IN 46032-3008Phone: (317) 962-0280
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2025-08-05
- Certified
- 2025-08-05
Frequently asked questions
- What is Theresa Giannini's NPI number?
- Theresa Giannini's National Provider Identifier (NPI) is 1588775571, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Giannini's specialty?
- Theresa Giannini is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Theresa Giannini located?
- Theresa Giannini's practice location on file with NPPES is 1801 N Senate Blvd Ste 4000, Indianapolis, IN 46202-1184.
- What is Theresa Giannini's phone number?
- The practice phone number listed in the NPPES registry for Theresa Giannini is (317) 962-0500.
- Does Theresa Giannini accept Medicare?
- Theresa Giannini is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Giannini's NPI active?
- Yes — Theresa Giannini's NPI (1588775571) is active in the NPPES registry as of the last update on 2025-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.