Gretchen Folk, APRN
NPI 1144976085 · Family Nurse Practitioner · Columbia, SC
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gretchen Folk, APRN is a Family Nurse Practitioner provider in Columbia, SC (NPI 1144976085).
Provider details
- NPI number
- 1144976085
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- GAA-NP000518 (GA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
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
4 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
20 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) |
|---|---|---|
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 20 | $237 |
Typical Medicare-allowed amounts for these services range $237–$237 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 59 | 23 |
| Amlodipine Besylate | 48 | 19 |
| Hydralazine Hcl | 42 | 23 |
| Carvedilol | 41 | 15 |
| Furosemide | 40 | 24 |
| Torsemide | 31 | — |
| Potassium Chloride | 27 | — |
| Calcitriol | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,321 across 62 records (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
- 2022-03-01
- Last updated
- 2024-12-03
- Certified
- 2022-03-22
Frequently asked questions
- What is Gretchen Folk's NPI number?
- Gretchen Folk's National Provider Identifier (NPI) is 1144976085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Folk's specialty?
- Gretchen Folk is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gretchen Folk located?
- Gretchen Folk's practice location on file with NPPES is Sc House Calls Inc., Columbia, SC 29203.
- What is Gretchen Folk's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Folk is (800) 491-0909.
- Does Gretchen Folk accept Medicare?
- Gretchen Folk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gretchen Folk's NPI active?
- Yes — Gretchen Folk's NPI (1144976085) is active in the NPPES registry as of the last update on 2024-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.