Quick answers
- Which hospitals does William A. Collazo work at?
- Medicare's official clinician data lists William A. Collazo at 3 hospitals: Fairview Regional Medical Center Authority, SSM Health St Anthony Hospital - Oklahoma City and SSM Health St Anthony Hospital - Shawnee. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William A. Collazo see patients?
- Medicare's clinician data lists 2 practice locations, including Oklahoma City, OK. Call before your visit to confirm the address.
- What is William A. Collazo's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does William A. Collazo accept Medicare assignment?
- Yes. Medicare's clinician data says William A. Collazo 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 William A. Collazo offer telehealth?
- Medicare's clinician data says William A. Collazo offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William A. Collazo?
- (405) 272-7278, as listed in official Medicare / NPI Registry data.
- What is William A. Collazo's NPI number?
- 1649290594. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William A. Collazo works
Medicare's Facility Affiliation Data lists William A. Collazo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Fairview Regional Medical Center AuthorityFairview, OK · Critical Access Hospital · CCN 371329
- SSM Health St Anthony Hospital - Oklahoma CityOklahoma City, OK · Acute Care Hospital · CCN 370037
- SSM Health St Anthony Hospital - ShawneeShawnee, OK · Acute Care Hospital · CCN 370149
Practice locations
Addresses where William A. Collazo is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 N Lee AveOklahoma City, OK 73102 (405) 272‑7278
- 1211 N Shartel Ave, Suite 1006Oklahoma City, OK 73103 (405) 546‑7699
Group practices
Medicare enrollment lists William A. Collazo as a member of this group (CMS data updated 2026-10-02).
- SSM Health Care of Oklahoma, Inc.46 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Oklahoma →
Other cardiologists in Oklahoma City
Clinicians with the same Medicare primary specialty in Oklahoma City, OK — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1649290594 |
| 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