Quick answers
- Does Janet Langjahr accept Medicare assignment?
- Medicare's clinician data says Janet Langjahr may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Janet Langjahr's NPI number?
- 1356301162. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Janet Langjahr works
Medicare's Facility Affiliation Data lists Janet Langjahr at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Antelope Valley HospitalLancaster, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050056
- Henry Mayo Newhall HospitalValencia, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050624
Practice locations
Addresses where Janet Langjahr is enrolled with Medicare (CMS data updated October 2, 2026).
- 1523 W Ave J, Suite 7Lancaster, CA 93534 (661) 945‑2221
Group practices
Medicare enrollment lists Janet Langjahr as a member of this group (CMS data updated October 2, 2026).
- Av Pediatrics Medical Associates. Inc.5 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Lancaster
Clinicians with the same Medicare primary specialty in Lancaster, CA — not a recommendation.
Other clinicians in Av Pediatrics Medical Associates. Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 1996 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1356301162 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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