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DR. GUOHUA XIA M.D., PH.D.
NPI 1831391465
Psychiatry & Neurology - Psychiatry in Davis, CA

Active since June 05, 2007PECOS EnrolledAccepts Medicare Assignment
2401 CLEMSON DR, DAVIS, CA 95618(530) 231-5858(530) 231-5169 Get Directions Write a Review

NPPES record last updated: May 28, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 28, 2025, Jun 7, 2023 (2 updates tracked since 2023).

About Dr. Guohua Xia M.d., Ph.d. NPPES

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

DR. GUOHUA XIA M.D., PH.D. (NPI 1831391465) is an individual psychiatry provider in Davis, California, licensed in California (A98979) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1986).

NPPES Registry Identity

NPI1831391465
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. GUOHUA XIACredential: M.D., PH.D.
Location Address2401 CLEMSON DRDavis, CA 95618-1506
Mailing Address2401 Clemson DrDavis, CA 95618-1506 · (530) 231-5858 · Fax (530) 231-5169
Phone(530) 231-5858
Fax(530) 231-5169
Sole ProprietorNo
Medical School CMSOtherGraduated 1986
Enumeration DateJune 5, 2007
Last NPPES UpdateMay 28, 20252 updates tracked since enumeration
NPPES CertifiedMay 21, 2025
✔ NPI 1831391465 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 · A98979✔ Licensed in OH · 35.089205
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.
2401 CLEMSON DR, Davis, CA 95618
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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. Guohua Xia M.d., Ph.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 ID9638266943
PECOS Enrollment IDI20071102000695
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

3

Medicare enrollment records show Guohua Xia reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Brainefit LLC.
Same address
Point of Service
2401 CLEMSON DR
Davis, CA 95618
  • Reassigned Medicare billing, California enrollment
NPI 1235569732 (530) 231-5858
Regents Of The Univ Of Ca
4.1 mi
Medical Microbiology
3146 TUPPER HALL
Davis, CA 95616
  • Reassigned Medicare billing, California enrollment
  • 2,570 clinicians in this Medicare group
NPI 1053304071 (530) 752-9402
El Hogar Community Services, Inc.
12 mi
Adult Mental Health
600 BERCUT DR
Sacramento, CA 95811
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of Sacramento
  • 45 clinicians in this Medicare group
NPI 1548347925 (916) 440-1500

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95618 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
$180.85 typical visit price
range $60.44 – $180.85
Typical copayment $45.21 (range $15.11 – $45.21)
Most-billed visit code 99205
Established Patient
$75.03 typical visit price
range $19.88 – $148.15
Typical copayment $18.75 (range $4.97 – $37.03)
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

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

BRAINEFIT LLC.
Point of Service
2401 CLEMSON DR
DAVIS, CA 95618
Yolo County (530) 231-5858

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 Guohua Xia's NPI number?

The NPI number for Guohua Xia is 1831391465. It was assigned to this individual provider in the NPPES registry on June 5, 2007.

Where is Guohua Xia located?

Guohua Xia practices at 2401 Clemson Dr, Davis, CA 95618. The listed phone number is (530) 231-5858.

What is Guohua Xia's specialty?

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

Is Guohua Xia enrolled in Medicare?

Yes. Guohua Xia 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 Guohua Xia's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Guohua Xia reassigns Medicare benefits to 3 organizations: Brainefit LLC. (Davis, CA), Regents Of The Univ Of Ca (Davis, CA) and El Hogar Community Services, Inc. (Sacramento, CA). 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 Guohua Xia's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Guohua Xia was last updated on May 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.