DR. GREGORY TAYLOR MICHAS D.O.
NPI 1285039651
Psychiatry & Neurology - Psychiatry in Walnut Creek, CA

Q: What is Gregory Michas's NPI number?

The NPI number for Gregory Michas is 1285039651. It was assigned to this individual provider in the NPPES registry on October 28, 2014.

Q: What is Gregory Michas's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gregory Michas was last updated on August 26, 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.

Active since October 28, 2014PECOS EnrolledAccepts Medicare Assignment

3100 OAK RD STE 270, WALNUT CREEK, CA 94597(925) 944-9711(925) 944-9709 Get Directions Write a Review

NPPES record last updated: August 26, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 26, 2021, May 19, 2020 (2 updates tracked since 2020).

On this page

About Dr. Gregory Taylor Michas D.o. NPPES

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

DR. GREGORY TAYLOR MICHAS D.O. (NPI 1285039651) is an individual psychiatry provider in Walnut Creek, California, licensed in California (20A15586) and active in the NPI registry since October 2014. He is enrolled in Medicare PECOS, maintains a secondary practice location in Largo, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1285039651

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. GREGORY TAYLOR MICHASCredential: D.O.

Location Address3100 OAK RD STE 270Walnut Creek, CA 94597-2078

Mailing Address1601 Cummins Dr Ste DModesto, CA 95358-6411 · (510) 900-3125

Phone(925) 944-9711

Fax(925) 944-9709

Sole ProprietorNo

Medical School CMSOtherGraduated 2013

Enumeration DateOctober 28, 2014

Last NPPES UpdateAugust 26, 20212 updates tracked since enumeration

NPPES CertifiedAugust 26, 2021

✔ NPI 1285039651 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 CA · 20A15586✔ Licensed in FL · U03533

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.

3100 OAK RD STE 270, Walnut Creek, CA 94597

Open in Google Maps ↗

Secondary Practice Location 1

Location 1201 14th St SWLargo, FL 33770-3133 · Phone (727) 588-5200

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. Gregory Taylor Michas D.o. 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 ID4486922044

PECOS Enrollment IDI20170622002286

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 Gregory Michas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Comprehensive Psychiatric Services, A Medical Group

Same address

Psychiatry

3100 OAK ROAD, SUITE 270
Walnut Creek, CA 94597

Reassigned Medicare billing, California enrollment
149 clinicians in this Medicare group

NPI 1184785834 (925) 944-9711

Cep America - Psychiatry PC

1.6 mi

Psychiatry

1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598

Reassigned Medicare billing, California enrollment
208 clinicians in this Medicare group

NPI 1154859510 (925) 939-3000

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 5

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.

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.

984 services172 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.

948 services169 patients

Psychiatric services complicated by communication factor 90785

Psychiatric services complicated by communication factors involve mental health care for individuals who have challenges with communication. This can include language barriers, speech disorders, or cognitive impairments. The process involves tailored strategies to ensure effective communication and appropriate mental health care.

110 services27 patients

Psychotherapy with evaluation and management visit, 45 minutes 90836

Psychotherapy with evaluation and management is a 45-minute session where a healthcare provider discusses your mental and emotional health. They assess your current state, manage any issues, and help you develop coping strategies. This service aims to improve your overall well-being.

17 services17 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.

17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94597 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

$202.35 typical visit price

range $69.00 – $202.35

Typical copayment $50.58 (range $17.25 – $50.58)

Most-billed visit code 99205

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

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 20

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

DR. YI LING LI MD

Psychiatry & Neurology (Psychiatry)