Sandra Messmer, NP
NPI 1891273652 · Nurse Practitioner · Meridian, ID
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sandra Messmer, NP is a Nurse Practitioner provider in Meridian, ID (NPI 1891273652).
Provider details
- NPI number
- 1891273652
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 2018026389 (MO)
Specialties & taxonomies
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
7 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
189 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 100 | $71 |
| Urinalysis, Manual Test81002 | 27 | $3 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 21 | $87 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 21 | $97 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 20 | $41 |
Typical Medicare-allowed amounts for these services range $3–$97 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 67 | 67 |
| Azithromycin | 24 | 24 |
| Doxycycline Hyclate | 21 | 21 |
| Prednisone | 18 | 18 |
| Cephalexin | 18 | 18 |
| Ciprofloxacin Hcl | 18 | 18 |
| Cefdinir | 14 | 14 |
| Albuterol Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$350 across 17 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)
- 512 N 21st AveCaldwell, ID 83605-4368Phone: (208) 809-2875Fax: (208) 809-2876
Registry dates
- Enumerated
- 2018-08-03
- Last updated
- 2024-09-09
- Certified
- 2024-09-09
Frequently asked questions
- What is Sandra Messmer's NPI number?
- Sandra Messmer's National Provider Identifier (NPI) is 1891273652, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sandra Messmer's specialty?
- Sandra Messmer is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sandra Messmer located?
- Sandra Messmer's practice location on file with NPPES is 867 S Vanguard Way, Meridian, ID 83642-7552.
- What is Sandra Messmer's phone number?
- The practice phone number listed in the NPPES registry for Sandra Messmer is (208) 302-7950.
- Does Sandra Messmer accept Medicare?
- Sandra Messmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sandra Messmer's NPI active?
- Yes — Sandra Messmer's NPI (1891273652) is active in the NPPES registry as of the last update on 2024-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.