MS. ANDREA MINOR THACH M.D.
NPI 1265484240
Internal Medicine - Hospice and Palliative Medicine in Oakland, CA

Active since May 17, 2006PECOS Enrolled
3100 SUMMIT ST FL 2, OAKLAND, CA 94609(510) 204-3410(510) 204-3411 Get Directions Write a Review

NPPES record last updated: September 9, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 9, 2020, Dec 1, 2015 (2 updates tracked since 2015).

About Ms. Andrea Minor Thach M.d. NPPES

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

MS. ANDREA MINOR THACH M.D. (NPI 1265484240) is an individual hospice and palliative medicine provider in Oakland, California, licensed in California (G53457) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Bellingham.

NPPES Registry Identity

NPI1265484240
Entity TypeIndividualFemale
Primary Taxonomy207RH0002X
Provider Legal NameMS. ANDREA MINOR THACHCredential: M.D.
Location Address3100 SUMMIT ST FL 2Oakland, CA 94609-3412
Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (510) 204-3410 · Fax (510) 204-3411
Fax(510) 204-3411
Sole ProprietorNo
Enumeration DateMay 17, 2006
Last NPPES UpdateSeptember 9, 20202 updates tracked since enumeration
NPPES CertifiedSeptember 9, 2020
✔ NPI 1265484240 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
Licenses✔ Licensed in CA · G53457✔ Licensed in WA · MD00021008
Definition
An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD00021008 (WA), 53457 (CA)
3100 SUMMIT ST FL 2, Oakland, CA 94609

Secondary Practice Location 1

Location 13015 Squalicum Pkwy, Suite 100Bellingham, WA 98225-1945 · Phone (360) 715-4186 · Fax (360) 715-4187

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Andrea Minor Thach M.d. 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

2

Medicare enrollment records show Andrea Thach reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
Endocrinology, Diabetes & Metabolism
2540 23RD ST, 2ND FLOOR, ROOM 2110
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 637 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 7

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.

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.
129 services30 patients
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 99350
An established patient home visit is a service where a healthcare professional visits a patient's home for a check-up or treatment. The visit typically lasts for about an hour. This service is especially beneficial for patients who may have difficulty traveling to a healthcare facility.
70 services42 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
66 services53 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.
41 services25 patients
Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes 99345
A new patient home visit is a comprehensive 75-minute appointment conducted at your home. The healthcare professional will assess your health, discuss any concerns, and create a personalized care plan. It's convenient, comfortable, and tailored to your specific needs.
22 services22 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
20 services20 patients

Other Providers at the Same Location NPPES 5

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

Nurse Practitioner (Family)
3100 SUMMIT ST FL 2
OAKLAND, CA 94609
Social Worker (Clinical)
3100 SUMMIT ST FL 2
OAKLAND, CA 94609
Nurse Practitioner (Gerontology)
3100 SUMMIT ST FL 2
OAKLAND, CA 94609
Nurse Practitioner (Primary Care)
3100 SUMMIT ST FL 2
OAKLAND, CA 94609
Nurse Practitioner
3100 SUMMIT ST FL 2
OAKLAND, CA 94609

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 Andrea Thach's NPI number?

The NPI number for Andrea Thach is 1265484240. It was assigned to this individual provider in the NPPES registry on May 17, 2006.

Where is Andrea Thach located?

Andrea Thach practices at 3100 Summit St Fl 2, Oakland, CA 94609. The listed phone number is (510) 204-3410.

What is Andrea Thach's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is Andrea Thach enrolled in Medicare?

Yes. Andrea Thach is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Andrea Thach's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrea Thach reassigns Medicare benefits to 2 organizations: Sutter Bay Medical Foundation (Orinda, CA) and University Of California Sfgh Medical Group (San Francisco, 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 Andrea Thach'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 Andrea Thach was last updated on September 9, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.