Jillian Larsen, MD
NPI 1225561608 · Child & Adolescent Psychiatry Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jillian Larsen, MD is a Child & Adolescent Psychiatry Physician provider in Palo Alto, CA (NPI 1225561608).
Provider details
- NPI number
- 1225561608
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A170174 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES 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
- 2017-04-04
- Last updated
- 2024-04-29
- Certified
- 2024-04-29
Frequently asked questions
- What is Jillian Larsen's NPI number?
- Jillian Larsen's National Provider Identifier (NPI) is 1225561608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jillian Larsen's specialty?
- Jillian Larsen is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Jillian Larsen located?
- Jillian Larsen's practice location on file with NPPES is 725 Welch Rd, Palo Alto, CA 94304-1601.
- What is Jillian Larsen's phone number?
- The practice phone number listed in the NPPES registry for Jillian Larsen is (650) 497-8000.
- Does Jillian Larsen accept Medicare?
- Jillian Larsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jillian Larsen's NPI active?
- Yes — Jillian Larsen's NPI (1225561608) is active in the NPPES registry as of the last update on 2024-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.