Quick answers
- Which hospitals does Shannon E. Sullivan work at?
- Medicare's official clinician data lists Shannon E. Sullivan at 2 hospitals: John Muir Medical Center - Concord Campus and John Muir Medical Center - Walnut Creek Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Shannon E. Sullivan see patients?
- Medicare's clinician data lists 2 practice locations, including Walnut Creek, CA and Pleasant Hill, CA. Call before your visit to confirm the address.
- What is Shannon E. Sullivan's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Shannon E. Sullivan accept Medicare assignment?
- Yes. Medicare's clinician data says Shannon E. Sullivan 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 Shannon E. Sullivan offer telehealth?
- Medicare's clinician data says Shannon E. Sullivan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Shannon E. Sullivan?
- (925) 945-0246, as listed in official Medicare / NPI Registry data.
- What is Shannon E. Sullivan's NPI number?
- 1255673463. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Shannon E. Sullivan works
Medicare's Facility Affiliation Data lists Shannon E. Sullivan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
Practice locations
Addresses where Shannon E. Sullivan is enrolled with Medicare (CMS data updated 2026-10-02).
- 2637 Shadelands DrWalnut Creek, CA 94598 (925) 945‑0246
- 400 Taylor Blvd, Suite 102Pleasant Hill, CA 94523 (925) 687‑2570
Group practices
Medicare enrollment lists Shannon E. Sullivan as a member of this group (CMS data updated 2026-10-02).
- Epic Care55 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 2013 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1255673463 |
| 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 2026-10-02, retrieved 2026-10-29
- 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