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THERESA DIEM-HANG BUI DO
NPI 1144576414
Psychiatry & Neurology - Psychiatry in San Francisco, CA

Active since July 24, 2012PECOS Enrolled
490 POST ST STE 1043, SAN FRANCISCO, CA 94102(925) 282-1778(415) 296-5299 Get Directions Write a Review

NPPES record last updated: April 10, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 10, 2024, Jul 26, 2022, May 19, 2016 (3 updates tracked since 2016).

About Theresa Diem-hang Bui Do NPPES

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

THERESA DIEM-HANG BUI DO (NPI 1144576414) is an individual psychiatry provider in San Francisco, California, licensed in California (20A15617) and active in the NPI registry since July 2012. She is enrolled in Medicare PECOS and maintains a secondary practice location in League City.

NPPES Registry Identity

NPI1144576414
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameTHERESA DIEM-HANG BUICredential: DO
Location Address490 POST ST STE 1043San Francisco, CA 94102-1301
Mailing Address490 Post St Ste 1043San Francisco, CA 94102-1301 · (925) 282-1778 · Fax (415) 296-5299
Phone(925) 282-1778
Fax(415) 296-5299
Sole ProprietorNo
Enumeration DateJuly 24, 2012
Last NPPES UpdateApril 10, 20243 updates tracked since enumeration
NPPES CertifiedApril 10, 2024
✔ NPI 1144576414 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 · 20A15617✔ Licensed in TX · P6147
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.
490 POST ST STE 1043, San Francisco, CA 94102
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Secondary Practice Location 1

Location 11150 Devereux DrLeague City, TX 77573-2043 · Phone (281) 335-1000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Cigna Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Theresa Diem-hang Bui Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

9

Medicare enrollment records show Theresa Bui reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pacific Coast Psychiatric Associates Inc
658 mi
Clinical
7373 N SCOTTSDALE RD STE A199
Scottsdale, AZ 85253
  • Reassigned Medicare billing, California enrollment
  • 766 clinicians in this Medicare group
NPI 1023125465 (702) 805-5360
Helen Farabee Centers
1,365 mi
Community/Behavioral Health
1000 BROOK AVE
Wichita Falls, TX 76301
  • Reassigned Medicare billing, Texas enrollment
  • 51 clinicians in this Medicare group
NPI 1457479511 (940) 397-3107
Camino Real Community Mhmr Center
1,480 mi
Case Management
19965 FM 3175
Lytle, TX 78052
  • Reassigned Medicare billing, Texas enrollment
  • 152 clinicians in this Medicare group
NPI 1154411262 (210) 357-0300
Heart Of Texas Region Mhmr Center
1,497 mi
Mental Health (Including Community Mental Health Center)
110 S 12TH ST
Waco, TX 76701
  • Reassigned Medicare billing, Texas enrollment
  • 172 clinicians in this Medicare group
NPI 1639399132 (254) 752-3451
Bluebonnet Trails Community Mhmr Center
1,498 mi
Mental Health (Including Community Mental Health Center)
1009 N GEORGETOWN ST
Round Rock, TX 78664
  • Reassigned Medicare billing, Texas enrollment
  • 216 clinicians in this Medicare group
NPI 1730135864 (512) 255-1720
Austin Travis County Mental Health And Mental Retardation Center
1,501 mi
Home Health
5225 N LAMAR BLVD
Austin, TX 78751
  • Reassigned Medicare billing, Texas enrollment
  • 253 clinicians in this Medicare group
NPI 1831393990 (512) 483-5000
Border Region Mh Mr Community Center
1,506 mi
Psychiatry
1500 PAPPAS ST
Laredo, TX 78041
  • Reassigned Medicare billing, Texas enrollment
  • 117 clinicians in this Medicare group
NPI 1124060173 (956) 794-3000
The Gulf Coast Center
1,665 mi
Psychiatry
4444 W MAIN ST
League City, TX 77573
  • Reassigned Medicare billing, Texas enrollment
  • 115 clinicians in this Medicare group
NPI 1245285899 (409) 763-2373
Spindletop Mhmr Services
1,702 mi
Mental Health
2750 S 8TH ST
Beaumont, TX 77701
  • Reassigned Medicare billing, Texas enrollment
  • 100 clinicians in this Medicare group
NPI 1467517656 (409) 839-1000

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 94102 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. FAUZIA SHUJAAT MD
Psychiatry & Neurology (Psychiatry)
490 POST ST STE 1043
SAN FRANCISCO, CA 94102
San Francisco County (415) 296-5290
DR. SIMONE HERON-CARMIGNANI PHD, LP
Psychologist (Clinical)
490 POST ST STE 1043
SAN FRANCISCO, CA 94102
San Francisco County (925) 282-1778
BRITTANY MARIE RAMIREZ LMFT
Marriage & Family Therapist
490 POST ST STE 1043
SAN FRANCISCO, CA 94102
San Francisco County (925) 282-1778
DIAN ELIZABETH GRIER LCSW
Social Worker (Clinical)
490 POST ST STE 1043
SAN FRANCISCO, CA 94102
San Francisco County (925) 282-1778
GULAY TEGIN M.D.
Psychiatry & Neurology (Psychiatry)
490 POST ST STE 1043
SAN FRANCISCO, CA 94102
San Francisco County (424) 284-2440
DR. ISAAC MARSTON OZOBIANI PH.D.,LCSW
Social Worker (Clinical)
490 POST ST STE 1043
SAN FRANCISCO, CA 94102
San Francisco County (925) 282-1778
MS. MARLENE PAMELA THOMPSON PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
490 POST ST STE 1043
SAN FRANCISCO, CA 94102
San Francisco County (925) 282-1778
LISA MARIE PADILLA LCSW
Social Worker (Clinical)
490 POST ST STE 1043
SAN FRANCISCO, CA 94102
San Francisco County (925) 282-1778

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 Theresa Bui's NPI number?

The NPI number for Theresa Bui is 1144576414. It was assigned to this individual provider in the NPPES registry on July 24, 2012.

Where is Theresa Bui located?

Theresa Bui practices at 490 Post St Ste 1043, San Francisco, CA 94102. The listed phone number is (925) 282-1778.

What is Theresa Bui's specialty?

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

Is Theresa Bui enrolled in Medicare?

Yes. Theresa Bui is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Theresa Bui's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Bui reassigns Medicare benefits to 9 organizations: Pacific Coast Psychiatric Associates Inc (Scottsdale, AZ), Helen Farabee Centers (Wichita Falls, TX), Camino Real Community Mhmr Center (Lytle, TX), Heart Of Texas Region Mhmr Center (Waco, TX), Bluebonnet Trails Community Mhmr Center (Round Rock, TX) and 4 more organizations, listed in the Medicare section above. 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 Theresa Bui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Theresa Bui accept?

Health plans from Blue Cross and Blue Shield of Texas and Cigna Healthcare list Theresa Bui 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 Theresa Bui was last updated on April 10, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.