Margaret Arzaga, FNP
NPI 1700777679 · Family Nurse Practitioner · Billings, MT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Arzaga, FNP is a Family Nurse Practitioner provider in Billings, MT (NPI 1700777679).
Provider details
- NPI number
- 1700777679
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 47698 (WY)
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 tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2025-07-10
- Last updated
- 2025-07-10
- Certified
- 2025-07-10
Frequently asked questions
- What is Margaret Arzaga's NPI number?
- Margaret Arzaga's National Provider Identifier (NPI) is 1700777679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Arzaga's specialty?
- Margaret Arzaga is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Arzaga located?
- Margaret Arzaga's practice location on file with NPPES is 1233 N 30th St, Billings, MT 59101-0127.
- What is Margaret Arzaga's phone number?
- The practice phone number listed in the NPPES registry for Margaret Arzaga is (406) 657-7000.
- Does Margaret Arzaga accept Medicare?
- Margaret Arzaga is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Arzaga's NPI active?
- Yes — Margaret Arzaga's NPI (1700777679) is active in the NPPES registry as of the last update on 2025-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.