Marjan Armstrong
NPI 1588719017 · Marriage & Family Therapist · San Jose, CA
Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marjan Armstrong is a Marriage & Family Therapist provider in San Jose, CA (NPI 1588719017).
Provider details
- NPI number
- 1588719017
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
3 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 (2)
- 2730 Shadelands Dr Bldg 10Walnut Creek, CA 94598-2538Phone: (925) 266-8400
- 2730 Shadelands Dr Bldg 10Walnut Creek, CA 94598-2538Phone: (925) 266-8400
Registry dates
- Enumerated
- 2007-01-24
- Last updated
- 2022-01-11
Frequently asked questions
- What is Marjan Armstrong's NPI number?
- Marjan Armstrong's National Provider Identifier (NPI) is 1588719017, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marjan Armstrong's specialty?
- Marjan Armstrong is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Marjan Armstrong located?
- Marjan Armstrong's practice location on file with NPPES is 1101 S Winchester Blvd Ste N-260, San Jose, CA 95128-3901.
- What is Marjan Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Marjan Armstrong is (408) 689-4900.
- Does Marjan Armstrong accept Medicare?
- Marjan Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marjan Armstrong's NPI active?
- Yes — Marjan Armstrong's NPI (1588719017) is active in the NPPES registry as of the last update on 2022-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.