GREGORY SCOTT SIDELL M.D.
NPI 1780603530
Psychiatry & Neurology - Psychiatry in Tacoma, WA

Active since July 19, 2006PECOS EnrolledAccepts Medicare Assignment
4301 S PINE ST STE 301, TACOMA, WA 98409(253) 476-6500(253) 476-6547 Get Directions Write a Review

NPPES record last updated: May 5, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 5, 2021, Sep 30, 2020 (2 updates tracked since 2020).

About Gregory Scott Sidell M.d. NPPES

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

GREGORY SCOTT SIDELL M.D. (NPI 1780603530) is an individual psychiatry provider in Tacoma, Washington, licensed in Washington (MD61058340) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Indiana University School Of Medicine (1988).

NPPES Registry Identity

NPI1780603530
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameGREGORY SCOTT SIDELLCredential: M.D.
Location Address4301 S PINE ST STE 301Tacoma, WA 98409-7206
Mailing Address4301 S Pine St Ste 301Tacoma, WA 98409-7206 · (253) 476-6500 · Fax (253) 476-6547
Fax(253) 476-6547
Sole ProprietorNo
Medical School CMSIndiana University School Of MedicineGraduated 1988
Enumeration DateJuly 19, 2006
Last NPPES UpdateMay 5, 20212 updates tracked since enumeration
NPPES CertifiedMay 5, 2021
✔ NPI 1780603530 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in WA · MD61058340✔ Licensed in IN · 01052695A
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
4301 S PINE ST STE 301, Tacoma, WA 98409

Other Identifiers 1

Medicaid200303280AIN

Accepted 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

Gregory Scott Sidell 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 ID5395754469
PECOS Enrollment IDI20201006000710
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

4

Medicare enrollment records show Gregory Sidell reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Multi-Specialty
2715 NACHES AVE SW # GSWA1N02
Renton, WA 98057
  • Reassigned Medicare billing, Washington enrollment
  • 2,678 clinicians in this Medicare group
Psychiatry
805 MADISON ST STE 401
Seattle, WA 98104
  • Reassigned Medicare billing, Washington enrollment
  • 13 clinicians in this Medicare group
Occupational Medicine
3443 W 3RD ST
Bloomington, IN 47404
  • Reassigned Medicare billing, Indiana enrollment
  • 47 clinicians in this Medicare group
Mental Health (Including Community Mental Health Center)
645 S ROGERS ST
Bloomington, IN 47403
  • Reassigned Medicare billing, Indiana enrollment
  • 251 clinicians in this Medicare group

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 4

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.

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.
130 services28 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.
67 services23 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
60 services18 patients
Psychotherapy with evaluation and management visit, 30 minutes 90833
Psychotherapy with evaluation and management is a 30-minute session where a mental health professional talks with you about your concerns and feelings. They assess your mental health, provide support, and manage your treatment plan to help improve your well-being.
39 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98409 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
$172.80 typical visit price
range $57.27 – $172.80
Typical copayment $43.20 (range $14.31 – $43.20)
Most-billed visit code 99205
Established Patient
$71.29 typical visit price
range $18.56 – $141.11
Typical copayment $17.82 (range $4.64 – $35.27)
Most-billed visit code 99213
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 13

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

Speech-Language Pathologist
4301 S PINE ST STE 301
TACOMA, WA 98409
Nurse Practitioner
4301 S PINE ST STE 301
TACOMA, WA 98409
Social Worker (Clinical)
4301 S PINE ST STE 301
TACOMA, WA 98409
Psychiatry & Neurology (Psychiatry)
4301 S PINE ST STE 301
TACOMA, WA 98409
Social Worker
4301 S PINE ST STE 301
TACOMA, WA 98409
Nurse Practitioner (Psychiatric/Mental Health)
4301 S PINE ST STE 301
TACOMA, WA 98409
Nurse Practitioner (Psychiatric/Mental Health)
4301 S PINE ST STE 301
TACOMA, WA 98409
Psychiatry & Neurology (Psychiatry)
4301 S PINE ST STE 301
TACOMA, WA 98409

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 Gregory Sidell's NPI number?

The NPI number for Gregory Sidell is 1780603530. It was assigned to this individual provider in the NPPES registry on July 19, 2006.

Where is Gregory Sidell located?

Gregory Sidell practices at 4301 S Pine St Ste 301, Tacoma, WA 98409. The listed phone number is (253) 476-6500.

What is Gregory Sidell's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Gregory Sidell enrolled in Medicare?

Yes. Gregory Sidell 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.

Which organizations bill Medicare for Gregory Sidell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Sidell reassigns Medicare benefits to 4 organizations: Kaiser Foundation Health Plan Of Washington (Renton, WA), Seattle Neuropsychiatric Treatment Center, PLLC (Seattle, WA), Indiana University Health Bloomington Inc (Bloomington, IN) and Centerstone Of Indiana, Inc. (Bloomington, IN). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregory Sidell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Sidell accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Gregory Sidell 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 Gregory Sidell was last updated on May 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.