DR. NIMALI D MENDIS M.D.
NPI 1952306979
Internal Medicine - Rheumatology in Seattle, WA

Active since June 16, 2005PECOS EnrolledAccepts Medicare Assignment
1200 12TH AVE S, SEATTLE, WA 98144(206) 326-2400 Get Directions Write a Review

NPPES record last updated: June 17, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jun 17, 2021, Oct 5, 2020, Sep 11, 2019 (3 updates tracked since 2019).

About Dr. Nimali D Mendis M.d. NPPES

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

DR. NIMALI D MENDIS M.D. (NPI 1952306979) is an individual rheumatology provider in Seattle, Washington, licensed in Washington (MD00036002) and active in the NPI registry since June 2005. She is enrolled in Medicare PECOS, maintains a secondary practice location in Renton, and is a graduate of Other (1993).

NPPES Registry Identity

NPI1952306979
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameDR. NIMALI D MENDISCredential: M.D.
Location Address1200 12TH AVE SSeattle, WA 98144-2712
Mailing Address1200 12th Ave SSeattle, WA 98144-2712 · (206) 326-2400
Sole ProprietorNo
Medical School CMSOtherGraduated 1993
Enumeration DateJune 16, 2005
Last NPPES UpdateJune 17, 20213 updates tracked since enumeration
NPPES CertifiedJune 17, 2021
NPI 1952306979 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License Licensed in WA · MD00036002
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
1200 12TH AVE S, Seattle, WA 98144

Secondary Practice Location 1

Location 1601 S Carr Rd Ste 100Renton, WA 98055-5802 · Phone (425) 227-3700 · Fax (425) 227-3115

Other Identifiers 1

Medicaid34579000WI

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Nimali D Mendis M.d. 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 ID8921067406
PECOS Enrollment IDI20090818000848
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.

Areas of Expertise CMS Part B claims 3

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.

Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
960 services14 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.
96 services45 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
22 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98144 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
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
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.

Other Providers at the Same Location NPPES 20

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

Physical Therapist
1200 12TH AVE S
SEATTLE, WA 98144
Clinic/Center (Primary Care)
1200 12TH AVE S
SEATTLE, WA 98144
Dental Hygienist
1200 12TH AVE S, SUITE 901
SEATTLE, WA 98144
Nurse Practitioner (Primary Care)
1200 12TH AVE S
SEATTLE, WA 98144
Physical Therapist
1200 12TH AVE S
SEATTLE, WA 98144
Family Medicine
1200 12TH AVE S, SUITE 901
SEATTLE, WA 98144
Pharmacist
1200 12TH AVE S
SEATTLE, WA 98144
Social Worker (Clinical)
1200 12TH AVE S, SUITE 901
SEATTLE, WA 98144

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nimali Mendis's NPI number?

The NPI number for Nimali Mendis is 1952306979. It was assigned to this individual provider in the NPPES registry on June 16, 2005.

Where is Nimali Mendis located?

Nimali Mendis practices at 1200 12th Ave S, Seattle, WA 98144. The listed phone number is (206) 326-2400.

What is Nimali Mendis's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Nimali Mendis enrolled in Medicare?

Yes. Nimali Mendis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Nimali Mendis accept?

Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Nimali Mendis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Nimali Mendis was last updated on June 17, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.