Quick answers
- Does Amber R. Keenan accept Medicare assignment?
- Yes. Medicare's clinician data says Amber R. Keenan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Amber R. Keenan see?
- In 2024, CMS data shows 102 Original Medicare patients and 1,351 services for Amber R. Keenan. This counts Original Medicare only and measures volume, not quality.
- What is Amber R. Keenan's NPI number?
- 1972022465. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Amber R. Keenan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 102 |
|---|---|
| Services billed to Medicare | 1,351 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)115 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)75 services
- Test to measure the level of nitric oxide gas (95012)31 services
- Test to measure rate of airflow (94375)16 services
- Professional service for multiple injections of allergen (95117)14 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Asthma64%
- Arthritis53%
- Diabetes25%
- Osteoporosis22%
Practice locations
Addresses where Amber R. Keenan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1100 Pear Tree LnNapa, CA 94558 (707) 258‑8100
- 414 W Napa St, Suite ASonoma, CA 95476 (707) 996‑0212
Group practices
Medicare enrollment lists Amber R. Keenan as a member of this group (CMS data updated October 2, 2026).
- North Bay Allergy and Asthma3 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Napa
Clinicians with the same Medicare primary specialty in Napa, CA — not a recommendation.
Other clinicians in North Bay Allergy and Asthma
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1972022465 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians