Day Keller, PA-C
NPI 1881143410 · Physician Assistant · Fountain Hills, AZ
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Day Keller, PA-C is a Physician Assistant provider in Fountain Hills, AZ (NPI 1881143410).
Provider details
- NPI number
- 1881143410
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 6487 (AZ)
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 tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
144 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 86 | $98 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 29 | $142 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 18 | $58 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 11 | $67 |
Typical Medicare-allowed amounts for these services range $58–$142 (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 |
|---|---|---|
| Cephalexin | 34 | 32 |
| Methylprednisolone | 26 | 26 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 16 | 16 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 15 |
| Doxycycline Hyclate | 14 | 14 |
| Ibuprofen | 12 | 12 |
| Ondansetronbrand: Ondansetron Odt | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-09-23
- Last updated
- 2016-11-28
Frequently asked questions
- What is Day Keller's NPI number?
- Day Keller's National Provider Identifier (NPI) is 1881143410, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Day Keller's specialty?
- Day Keller is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Day Keller located?
- Day Keller's practice location on file with NPPES is 16605 E Palisades Blvd Ste 150, Fountain Hills, AZ 85268-3717.
- What is Day Keller's phone number?
- The practice phone number listed in the NPPES registry for Day Keller is (480) 837-4300.
- Does Day Keller accept Medicare?
- Day Keller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Day Keller's NPI active?
- Yes — Day Keller's NPI (1881143410) is active in the NPPES registry as of the last update on 2016-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.