GANDIS G. MAZEIKA M.D.
NPI 1679518880
Psychiatry & Neurology - Sleep Medicine in Edmonds, WA

Q: What is Gandis Mazeika's NPI number?

The NPI number for Gandis Mazeika is 1679518880. It was assigned to this individual provider in the NPPES registry on June 19, 2006.

Q: What is Gandis Mazeika's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Sleep Medicine, with taxonomy code 2084S0012X.

Q: When was this NPI record last updated?

The NPPES record for Gandis Mazeika was last updated on October 12, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 19, 2006PECOS EnrolledAccepts Medicare Assignment

77.93/100

CMS Quality Rating

21701 76TH AVE W STE 206, EDMONDS, WA 98026(425) 636-2400(425) 636-2401 Get Directions Write a Review

NPPES record last updated: October 12, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 12, 2022, Apr 15, 2017 (2 updates tracked since 2017).

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About Gandis G. Mazeika M.d. NPPES

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

GANDIS G. MAZEIKA M.D. (NPI 1679518880) is an individual sleep medicine provider in Edmonds, Washington, licensed in Washington (MD00038659) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, Davis School Of Medicine (1993).

NPPES Registry Identity

NPI1679518880

Entity TypeIndividualMale

Primary Taxonomy2084S0012X

Provider Legal NameGANDIS G. MAZEIKACredential: M.D.

Location Address21701 76TH AVE W STE 206Edmonds, WA 98026-7536

Mailing Address16150 Ne 85th St Ste 203Redmond, WA 98052-3543 · (206) 427-4242 · Fax (425) 636-2401

Phone(425) 636-2400

Fax(425) 636-2401

Sole ProprietorYes

Medical School CMSUniversity Of California, Davis School Of MedicineGraduated 1993

Enumeration DateJune 19, 2006

Last NPPES UpdateOctober 12, 20222 updates tracked since enumeration

NPPES CertifiedAugust 30, 2022

✔ NPI 1679518880 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Sleep MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2084S0012X

License✔ Licensed in WA · MD00038659

Definition

A Psychiatrist or Neurologist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

Also ListedSpecialistTaxonomy 174400000X · License MD00038659 (WA)

21701 76TH AVE W STE 206, Edmonds, WA 98026

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Other Identifiers 1

Medicaid1110972WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.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

Gandis G. Mazeika 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 ID345233201

PECOS Enrollment IDI20080226000646

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 Reassignment

Medicare enrollment records show Gandis Mazeika reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Gandis G Mazeika MD Ps

Same address

Sleep Disorder Diagnostic

21701 76TH AVE W STE 206
Edmonds, WA 98026

Reassigned Medicare billing, Washington enrollment
3 clinicians in this Medicare group

NPI 1326127309 (425) 636-2400

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 13

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.

Assessment of emotional or behavioral problems 96127

Assessment of emotional or behavioral problems involves a thorough evaluation of your feelings, thoughts, and behaviors. It's a process where professionals study patterns over time to identify potential issues like anxiety, depression, or other mental health conditions.

1,290 services258 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.

457 services215 patients

Measurement of brain wave activity (eeg), awake and asleep 95819

The measurement of brain wave activity, known as an EEG, records the brain's electrical signals. It's performed when you're awake and asleep to monitor your brain's functioning. It helps in diagnosing conditions like epilepsy, sleep disorders, and other neurological issues.

247 services81 patients

Device supply with scheduled recording and transmission for remote monitoring of respiratory system, per 30 days 98976

This service involves providing a device that records and transmits data about your respiratory system. It helps in remote monitoring of your breathing patterns for a period of 30 days. This method aids in early detection of any potential respiratory issues.

214 services152 patients

Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation G0399

A Home Sleep Test (HST) with a Type III Portable Monitor is an unattended test that records your breathing, heart rate, and oxygen levels during sleep. This test uses a minimum of 4 channels to monitor these parameters, helping to diagnose sleep disorders.

155 services62 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

118 services91 patients

Measurement of brain wave activity (eeg), digital analysis 95957

The measurement of brain wave activity, or EEG, involves recording and analyzing electrical signals from your brain. Small sensors are placed on the scalp to capture these signals. This digital analysis helps in diagnosing conditions like epilepsy or sleep disorders.

107 services81 patients

Assessment of health behavior 96156

Assessment of health behavior is a process where your daily habits and lifestyle choices are evaluated. This includes your diet, exercise, sleep patterns, and stress management. The goal is to identify areas for improvement and develop strategies for healthier habits.

80 services21 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.

71 services45 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.

58 services58 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

45 services27 patients

Measurement of brain wave activity (eeg), 61-119 minutes 95813

The procedure you're having is an EEG, which measures your brain's electrical activity. Electrodes placed on your scalp capture signals that are recorded for 61-119 minutes. This helps identify any irregularities, aiding in diagnosing conditions like epilepsy or sleep disorders.

39 services21 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

24 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98026 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

$130.99 typical visit price

range $57.27 – $172.80

Typical copayment $32.74 (range $14.31 – $43.20)

Most-billed visit code 99204

Established Patient

$100.78 typical visit price

range $18.56 – $141.11

Typical copayment $25.19 (range $4.64 – $35.27)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

77.93/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

55.87

Improvement Activities

Reported Quality Measures

Colorectal Cancer Screening

0%1,400 patients1/55-star benchmark: 88%

Controlling High Blood Pressure

6%343 patients1/55-star benchmark: 91%

Diabetes: Eye Exam

0%65 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

100%65 patients1/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

91%6,435 patients4/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

49%160 patients3/55-star benchmark: 98%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

78%226 patients4/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 3% · 635 patients

Patients totalRate: 5% · 637 patients

3%637 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 18

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

Tubing with integrated heating element for use with positive airway pressure device A4604