Allison Armstrong
NPI 1598261166 · Nurse Practitioner · Palo Alto, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allison Armstrong is a Nurse Practitioner provider in Palo Alto, CA (NPI 1598261166).
Provider details
- NPI number
- 1598261166
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 95149003 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
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
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 5201 Deer Valley Rd Ste 1eAntioch, CA 94531-7430Phone: (781) 910-3237
Registry dates
- Enumerated
- 2018-04-03
- Last updated
- 2023-03-13
- Certified
- 2023-03-13
Frequently asked questions
- What is Allison Armstrong's NPI number?
- Allison Armstrong's National Provider Identifier (NPI) is 1598261166, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Armstrong's specialty?
- Allison Armstrong is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Allison Armstrong located?
- Allison Armstrong's practice location on file with NPPES is 725 Welch Rd, Palo Alto, CA 94304-1601.
- What is Allison Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Allison Armstrong is (650) 497-8000.
- Does Allison Armstrong accept Medicare?
- Allison Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allison Armstrong's NPI active?
- Yes — Allison Armstrong's NPI (1598261166) is active in the NPPES registry as of the last update on 2023-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.