Carolyn Williams, NP-C
NPI 1558876300 · Family Nurse Practitioner · Knoxville, TN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carolyn Williams, NP-C is a Family Nurse Practitioner provider in Knoxville, TN (NPI 1558876300).
Provider details
- NPI number
- 1558876300
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 23398 (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
348 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 | 245 | $103 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 51 | $11 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 24 | $73 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 15 | $104 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 13 | $45 |
Typical Medicare-allowed amounts for these services range $11–$104 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 111 | 54 |
| Apixabanbrand: Eliquis | 48 | 16 |
| Furosemide | 25 | 13 |
| Potassium Chloride | 16 | — |
| Metoprolol Tartrate | 12 | — |
| Enoxaparin Sodium | 11 | — |
| Ciprofloxacin Hcl | 11 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$758 across 42 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
- 2017-12-01
- Last updated
- 2023-01-25
- Certified
- 2023-01-25
Frequently asked questions
- What is Carolyn Williams's NPI number?
- Carolyn Williams's National Provider Identifier (NPI) is 1558876300, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carolyn Williams's specialty?
- Carolyn Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Carolyn Williams located?
- Carolyn Williams's practice location on file with NPPES is 1940 Alcoa Hwy, Knoxville, TN 37920-2244.
- What is Carolyn Williams's phone number?
- The practice phone number listed in the NPPES registry for Carolyn Williams is (865) 548-9720.
- Does Carolyn Williams accept Medicare?
- Carolyn Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carolyn Williams's NPI active?
- Yes — Carolyn Williams's NPI (1558876300) is active in the NPPES registry as of the last update on 2023-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.