David Day, P.A.
NPI 1649321134 · General Practice Physician · Rexburg, ID
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Day, P.A. is a General Practice Physician provider in Rexburg, ID (NPI 1649321134).
Provider details
- NPI number
- 1649321134
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- No
- License
- PA394 (ID)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
169 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 | 114 | $71 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 35 | $11 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 20 | $101 |
Typical Medicare-allowed amounts for these services range $11–$101 (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 · 63 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 133 | 30 |
| Pantoprazole Sodium | 102 | 17 |
| Amlodipine Besylate | 79 | 21 |
| Zolpidem Tartrate | 76 | 14 |
| Atorvastatin Calcium | 73 | 16 |
| Olmesartan Medoxomil | 68 | 20 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$355 across 19 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
Registry dates
- Enumerated
- 2007-01-13
- Last updated
- 2011-09-07
Frequently asked questions
- What is David Day's NPI number?
- David Day's National Provider Identifier (NPI) is 1649321134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Day's specialty?
- David Day is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is David Day located?
- David Day's practice location on file with NPPES is 32 W 1st S, Rexburg, ID 83440-1810.
- What is David Day's phone number?
- The practice phone number listed in the NPPES registry for David Day is (208) 356-7585.
- Does David Day accept Medicare?
- David Day is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Day's NPI active?
- Yes — David Day's NPI (1649321134) is active in the NPPES registry as of the last update on 2011-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.