Quick answers
- Which hospitals does Ranil Gajanayaka work at?
- Medicare's official clinician data lists Ranil Gajanayaka at 5 hospitals: Baylor Scott & White Medical Center Grapevine, Medical City Las Colinas, Memorial Health, Mercy Hospital Ardmore, Inc and Methodist Southlake Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ranil Gajanayaka see patients?
- Medicare's clinician data lists 4 practice locations, including Ardmore, OK, Irving, TX and Lawton, OK. Call before your visit to confirm the address.
- What is Ranil Gajanayaka's specialty?
- Medicare lists Hospitalist as the primary specialty.
- Does Ranil Gajanayaka accept Medicare assignment?
- Yes. Medicare's clinician data says Ranil Gajanayaka 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 Ranil Gajanayaka offer telehealth?
- Medicare's clinician data says Ranil Gajanayaka offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ranil Gajanayaka?
- (580) 220-6132, as listed in official Medicare / NPI Registry data.
- What is Ranil Gajanayaka's NPI number?
- 1841452380. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ranil Gajanayaka works
Medicare's Facility Affiliation Data lists Ranil Gajanayaka at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baylor Scott & White Medical Center GrapevineGrapevine, TX · Acute Care Hospital · CCN 450563
- Medical City Las ColinasIrving, TX · Acute Care Hospital · CCN 450822
- Memorial HealthLawton, OK · Acute Care Hospital · CCN 370056
- Mercy Hospital Ardmore, IncArdmore, OK · Acute Care Hospital · CCN 370047
- Methodist Southlake Medical CenterSouthlake, TX · Acute Care Hospital · CCN 670132
Practice locations
Addresses where Ranil Gajanayaka is enrolled with Medicare (CMS data updated 2026-10-02).
- 1011 14th Ave NWArdmore, OK 73401 (580) 220‑6132
- 1625 N Story Rd, Suite 140Irving, TX 75061 (972) 871‑8282
- 3401 W Gore BlvdLawton, OK 73505 (580) 510‑7037
- 750 E 34th StHibbing, MN 55746 (218) 262‑4881
Group practices
Medicare enrollment lists Ranil Gajanayaka as a member of these groups (CMS data updated 2026-10-02).
- Mercy Clinic Oklahoma Communities649 clinicians in the group
- Range Regional Health Services353 clinicians in the group
- Dallas Nephrology Associates157 clinicians in the group
- Comanche County Healthcare Corporation130 clinicians in the group
Specialties
- Hospitalistprimary
Other hospitalists in Oklahoma
Clinicians with the same Medicare primary specialty in Oklahoma — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1841452380 |
| 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