Corinne Grgas, FNP-BC
NPI 1659894475 · Family Nurse Practitioner · Nashville, TN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Corinne Grgas, FNP-BC is a Family Nurse Practitioner provider in Nashville, TN (NPI 1659894475).
Provider details
- NPI number
- 1659894475
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- APN0000022867 (TN)
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 tenure25% of score
8 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
565 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 189 | $99 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 114 | $70 |
| X-Ray of Lower and Sacral Spine, Minimum of 4 Views72110 | 84 | $39 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 41 | $30 |
| Injection of Trigger Points, 1-2 Muscles20552 | 29 | $40 |
| X-Ray of Upper Spine, 4-5 Views72050 | 28 | $38 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 101 | 37 |
| Methylprednisolone | 81 | 72 |
| Methocarbamol | 58 | 42 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 47 | 39 |
| Tizanidine Hcl | 44 | 21 |
| Meloxicam | 40 | 25 |
| Pregabalin | 39 | 26 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 across 1 record (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
- 2017-07-24
- Last updated
- 2017-08-30
Frequently asked questions
- What is Corinne Grgas's NPI number?
- Corinne Grgas's National Provider Identifier (NPI) is 1659894475, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Corinne Grgas's specialty?
- Corinne Grgas is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Corinne Grgas located?
- Corinne Grgas's practice location on file with NPPES is 2004 Hayes St Ste 200, Nashville, TN 37203-2646.
- What is Corinne Grgas's phone number?
- The practice phone number listed in the NPPES registry for Corinne Grgas is (615) 324-1600.
- Does Corinne Grgas accept Medicare?
- Corinne Grgas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Corinne Grgas's NPI active?
- Yes — Corinne Grgas's NPI (1659894475) is active in the NPPES registry as of the last update on 2017-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.