DR. RANIL S GAJANAYAKA MD
NPI 1841452380
Internal Medicine - Nephrology in Irving, TX

Q: What is Ranil Gajanayaka's NPI number?

The NPI number for Ranil Gajanayaka is 1841452380. It was assigned to this individual provider in the NPPES registry on June 26, 2008.

Q: What is Ranil Gajanayaka's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Ranil Gajanayaka was last updated on November 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 26, 2008PECOS EnrolledAccepts Medicare Assignment

2005 W PARK DR STE 200, IRVING, TX 75061(214) 358-2300(214) 579-6984 Get Directions Write a Review

NPPES record last updated: November 15, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 15, 2023, May 5, 2021 (2 updates tracked since 2021).

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About Dr. Ranil S Gajanayaka Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. RANIL S GAJANAYAKA MD (NPI 1841452380) is an individual nephrology provider in Irving, Texas, licensed in Texas (Q4580) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Ardmore, Inc, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1841452380

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameDR. RANIL S GAJANAYAKACredential: MD

Location Address2005 W PARK DR STE 200Irving, TX 75061-2034

Mailing Address1505 Lbj Fwy Ste 700Dallas, TX 75234-6065 · (214) 358-2300 · Fax (214) 579-6941

Phone(214) 358-2300

Fax(214) 579-6984

Sole ProprietorNo

Medical School CMSOtherGraduated 2003

Enumeration DateJune 26, 2008

Last NPPES UpdateNovember 15, 20232 updates tracked since enumeration

NPPES CertifiedNovember 15, 2023

✔ NPI 1841452380 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in TX · Q4580

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

2005 W PARK DR STE 200, Irving, TX 75061

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Secondary Practice Locations 2

Location 12020 W State Highway 114 Ste 190Grapevine, TX 76051-8649 · Phone (214) 358-2300 ext. 6225 · Fax (214) 579-6984

Location 2925 E Southlake Blvd Ste 270Southlake, TX 76092-1479 · Phone (214) 358-2300 ext. 6225 · Fax (214) 579-6984

Other Identifiers 1

OtherQ4580TX · Medical License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ranil S Gajanayaka Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1759550817

PECOS Enrollment IDI20120827000121, I20160426001766, I20220420000779

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Ranil Gajanayaka reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dallas Nephrology Associates

5.7 mi

Nephrology

1505 LBJ FWY STE 700
Dallas, TX 75234

Reassigned Medicare billing, Texas enrollment
183 clinicians in this Medicare group

NPI 1861440109 (214) 358-2300

Comanche County Healthcare

109 mi

Family Medicine

HWY 81 AND 70
Waurika, OK 73573

Reassigned Medicare billing, Oklahoma enrollment
160 clinicians in this Medicare group

NPI 1235159229 (580) 228-3669

Mercy Clinic Oklahoma Communities

195 mi

Family Medicine

4300 W MEMORIAL RD
Oklahoma City, OK 73120

Reassigned Medicare billing, Oklahoma enrollment
975 clinicians in this Medicare group

NPI 1386874550 (405) 752-3333

Grand Itasca Clinic And Hospital

1,009 mi

General Acute Care Hospital

1601 GOLF COURSE RD
Grand Rapids, MN 55744

Reassigned Medicare billing, Minnesota enrollment
555 clinicians in this Medicare group

NPI 1669426631 (218) 326-3401

Range Regional Health Services

1,028 mi

General Acute Care Hospital

750 E 34TH ST
Hibbing, MN 55746

Reassigned Medicare billing, Minnesota enrollment
707 clinicians in this Medicare group

NPI 1356321699 (218) 262-4881

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

484 services168 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

483 services236 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

282 services122 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

187 services170 patients

Dialysis services, 4 or more physician visits per month (20 years or older) 90960

Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.

147 services31 patients

Dialysis services, per day, less than full month service (20 years or older) 90970

Dialysis is a treatment that replicates some functions of healthy kidneys when they're not working properly. It helps to remove waste, salt, and excess water from your body and maintain a safe level of certain chemicals in your blood. This service, for patients aged 20 or older, is provided on a daily basis for less than a full month.

144 services13 patients

Home dialysis services per month (20 years or older) 90966

Home dialysis services provide kidney treatment for patients aged 20 or older right in their own homes. This service includes necessary equipment, supplies, and support for performing dialysis. It's a convenient option that allows patients to maintain their daily routines while receiving essential care.

100 services13 patients

Dialysis services, 2-3 physician visits per month (20 years or older) 90961

Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.

41 services28 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

36 services36 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

19 services18 patients

Face-to-face educational services related to the care of chronic kidney disease; individual, per session, per one hour G0420

This service involves one-on-one educational sessions about managing chronic kidney disease. Each session lasts about an hour. Topics can include understanding the disease, dietary changes, medication management, and lifestyle modifications to help control the condition.

17 services11 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Hospital Ardmore, Inc

Acute Care Hospitals · Ardmore, OK

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number370047

Location1011 14th Ave NWArdmore, OK 73401 · Carter County

Emergency services Birthing friendly

Comanche County Memorial Hospital

Acute Care Hospitals · Lawton, OK

1/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number370056

Location3401 West Gore BlvdLawton, OK 73505 · Comanche County

Emergency services Birthing friendly

Baylor Scott & White Medical Center Grapevine

Acute Care Hospitals · Grapevine, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450563

Location1650 W College StGrapevine, TX 76051 · Tarrant County

Emergency services Birthing friendly

Medical City Las Colinas

Acute Care Hospitals · Irving, TX

2/5 CMS rating

OwnershipProprietary

CMS Certification Number450822

Location6800 N Macarthur BlvdIrving, TX 75039 · Dallas County

Emergency services Birthing friendly

Methodist Southlake Medical Center

Acute Care Hospitals · Southlake, TX

OwnershipProprietary

CMS Certification Number670132

Location421 E State Highway 114Southlake, TX 76092 · Tarrant County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75061 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$131.01 typical visit price

range $57.18 – $172.86

Typical copayment $32.75 (range $14.29 – $43.21)

Most-billed visit code 99204

Established Patient

$100.80 typical visit price

range $18.48 – $141.20

Typical copayment $25.20 (range $4.62 – $35.30)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier13 claims347 services$0.33 avg. paid by Medicare

Mycophenolic acid, oral, 180 mg J7518

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier12 claims1,420 services$0.99 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512

Treatment-Chemotherapy · category RH012N

1 supplier13 claims15 services$12.66 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DYANN NICOLE MINTON

Nurse Practitioner