Annette Siemens, FNP
NPI 1477643872 · Nurse Practitioner · Denver, CO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Annette Siemens, FNP is a Nurse Practitioner provider in Denver, CO (NPI 1477643872).
Provider details
- NPI number
- 1477643872
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 197 (AK)
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 tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Losartan Potassium | 31 |
| Atorvastatin Calcium | 30 |
| Lisinopril | 25 |
| Omeprazole | 17 |
| Dulaglutidebrand: Trulicity | 15 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 14 |
| Gabapentin | 12 |
| Rosuvastatin Calcium | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-14
- Last updated
- 2023-09-22
- Certified
- 2023-09-22
Frequently asked questions
- What is Annette Siemens's NPI number?
- Annette Siemens's National Provider Identifier (NPI) is 1477643872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Annette Siemens's specialty?
- Annette Siemens is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Annette Siemens located?
- Annette Siemens's practice location on file with NPPES is 2880 W Holden Pl, Denver, CO 80204-3353.
- What is Annette Siemens's phone number?
- The practice phone number listed in the NPPES registry for Annette Siemens is (303) 953-6600.
- Does Annette Siemens accept Medicare?
- Annette Siemens is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Annette Siemens's NPI active?
- Yes — Annette Siemens's NPI (1477643872) is active in the NPPES registry as of the last update on 2023-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.