Shelley Poss, FNP
NPI 1629045356 · Family Nurse Practitioner · Lewistown, MT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shelley Poss, FNP is a Family Nurse Practitioner provider in Lewistown, MT (NPI 1629045356).
Provider details
- NPI number
- 1629045356
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- RN17924 (MT)
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
20 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 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 139 | 36 |
| Lisinopril | 127 | 35 |
| Atorvastatin Calcium | 121 | 32 |
| Amlodipine Besylate | 98 | 27 |
| Hydrochlorothiazide | 74 | 21 |
| Gabapentin | 61 | 11 |
| Simvastatin | 54 | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-01
- Last updated
- 2017-12-12
Frequently asked questions
- What is Shelley Poss's NPI number?
- Shelley Poss's National Provider Identifier (NPI) is 1629045356, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shelley Poss's specialty?
- Shelley Poss is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Shelley Poss located?
- Shelley Poss's practice location on file with NPPES is 408 Wendell Ave, Lewistown, MT 59457-2261.
- What is Shelley Poss's phone number?
- The practice phone number listed in the NPPES registry for Shelley Poss is (406) 535-1502.
- Does Shelley Poss accept Medicare?
- Shelley Poss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shelley Poss's NPI active?
- Yes — Shelley Poss's NPI (1629045356) is active in the NPPES registry as of the last update on 2017-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.