Christen Duke, ANP-BC
NPI 1437327343 · Obstetrics & Gynecology Nurse Practitioner · Sioux Falls, SD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christen Duke, ANP-BC is a Obstetrics & Gynecology Nurse Practitioner provider in Sioux Falls, SD (NPI 1437327343).
Provider details
- NPI number
- 1437327343
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ANP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- CP001777 (SD)
Specialties & taxonomies
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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
62 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 | 27 | $76 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 18 | $62 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $48 |
Typical Medicare-allowed amounts for these services range $48–$76 (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 |
|---|---|---|
| Liothyronine Sodium | 126 | 31 |
| Progesterone, Micronizedbrand: Progesterone | 86 | 20 |
| Levothyroxine Sodium | 55 | 15 |
| Estradiolbrand: Dotti | 42 | 11 |
| Estradiolbrand: Estradiol (twice Weekly) | 39 | 11 |
| Thyroid,porkbrand: Armour Thyroid | 29 | — |
| Estradiol | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$170 across 10 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
Additional practice locations (1)
- 1301 W 18th StSioux Falls, SD 57105-0401Phone: (605) 312-2200
Registry dates
- Enumerated
- 2008-02-13
- Last updated
- 2023-04-27
- Certified
- 2023-04-27
Frequently asked questions
- What is Christen Duke's NPI number?
- Christen Duke's National Provider Identifier (NPI) is 1437327343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christen Duke's specialty?
- Christen Duke is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Christen Duke located?
- Christen Duke's practice location on file with NPPES is 5019 S Western Ave Ste 200, Sioux Falls, SD 57108-5155.
- What is Christen Duke's phone number?
- The practice phone number listed in the NPPES registry for Christen Duke is (605) 328-9700.
- Does Christen Duke accept Medicare?
- Christen Duke is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christen Duke's NPI active?
- Yes — Christen Duke's NPI (1437327343) is active in the NPPES registry as of the last update on 2023-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.