Karen Cox, DNP, FNP-C
NPI 1255943221 · Family Nurse Practitioner · Anthem, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Cox, DNP, FNP-C is a Family Nurse Practitioner provider in Anthem, AZ (NPI 1255943221).
Provider details
- NPI number
- 1255943221
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 243270 (AZ)
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
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
141 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 58 | $67 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 35 | $54 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 29 | $98 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 19 | $143 |
Typical Medicare-allowed amounts for these services range $54–$143 (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 |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 33 | 32 |
| Cephalexin | 31 | 30 |
| Methylprednisolone | 29 | 28 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 18 | 17 |
| Azithromycin | 18 | 18 |
| Clindamycin Hcl | 13 | 12 |
| Doxycycline Hyclate | 12 | 12 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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
Registry dates
- Enumerated
- 2020-08-20
- Last updated
- 2020-08-20
- Certified
- 2020-08-20
Frequently asked questions
- What is Karen Cox's NPI number?
- Karen Cox's National Provider Identifier (NPI) is 1255943221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Cox's specialty?
- Karen Cox is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Cox located?
- Karen Cox's practice location on file with NPPES is 41517 N Mill Creek Way, Anthem, AZ 85086-1193.
- What is Karen Cox's phone number?
- The practice phone number listed in the NPPES registry for Karen Cox is (602) 750-3435.
- Does Karen Cox accept Medicare?
- Karen Cox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Cox's NPI active?
- Yes — Karen Cox's NPI (1255943221) is active in the NPPES registry as of the last update on 2020-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.