Quick answers
- Which hospitals does Tammy Holder work at?
- Medicare's official clinician data lists Tammy Holder at 1 hospital: Chickasaw Nation Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Tammy Holder see patients?
- Medicare's clinician data lists 1 practice location in Ada, OK. Call before your visit to confirm the address.
- What is Tammy Holder's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Tammy Holder accept Medicare assignment?
- Yes. Medicare's clinician data says Tammy Holder 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.
- What is the phone number for Tammy Holder?
- (580) 436-3980, as listed in official Medicare / NPI Registry data.
- What is Tammy Holder's NPI number?
- 1730530932. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Tammy Holder works
Medicare's Facility Affiliation Data lists Tammy Holder at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Chickasaw Nation Medical CenterAda, OK · Acute Care Hospital · CCN 370180
Practice locations
Addresses where Tammy Holder is enrolled with Medicare (CMS data updated 2026-10-02).
- 1921 Stonecipher DrAda, OK 74820 (580) 436‑3980
Group practices
Medicare enrollment lists Tammy Holder as a member of this group (CMS data updated 2026-10-02).
- Chickasaw Nation Division of Health Chickasaw Nation Medical Center240 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Ada
Clinicians with the same Medicare primary specialty in Ada, OK — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730530932 |
| 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