Quick answers
- Where does Phyllis M. Siebern see patients?
- Medicare's clinician data lists 2 practice locations, including Phoenix, AZ. Call before your visit to confirm the address.
- What is Phyllis M. Siebern's specialty?
- Medicare lists Mental Health Counselor as the primary specialty.
- Does Phyllis M. Siebern accept Medicare assignment?
- Yes. Medicare's clinician data says Phyllis M. Siebern accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Phyllis M. Siebern offer telehealth?
- Medicare's clinician data says Phyllis M. Siebern offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Phyllis M. Siebern?
- (866) 630-0966, as listed in official Medicare / NPI Registry data.
- What is Phyllis M. Siebern's NPI number?
- 1326471871. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Phyllis M. Siebern is enrolled with Medicare (CMS data updated 2026-10-02).
- 20 E Thomas Rd, Suite 2200Phoenix, AZ 85012 (866) 630‑0966
- 3104 E Camelback Rd, Suite 2937Phoenix, AZ 85016 (415) 360‑3348
Group practices
Medicare enrollment lists Phyllis M. Siebern as a member of these groups (CMS data updated 2026-10-02).
- Sondermind Provider Network LLC1,339 clinicians in the group
- Brightside Medical PA91 clinicians in the group
Specialties
- Mental Health Counselorprimary
Other mental health counselors in Phoenix
Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.
Clinician information
| Graduation year | 2001 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1326471871 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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