Doctor profile · Federal record

Dr. Andrea Thach, M.D.

Hospice and Palliative Medicine (Internal Medicine) Physician · Internal Medicine Physician · Internal Medicine Physician · Hospice and Palliative Medicine (Internal Medicine) Physician · Oakland, CA

  • NPI 1265484240
  • 20 yrs on file
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
3100 Summit St Fl 2
Oakland, CA 946093412
(510) 204-3410
fax (510) 204-3411
Additional location
3015 Squalicum Pkwy, Suite 100
Bellingham, WA 982251945
(360) 715-4186
fax (360) 715-4187
Mailing address
325 Distel Cir
Los Altos, CA 940221408

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
September 9, 2020
Specialty taxonomy
207RH0002X — NUCC code
State licenses (3)
California #G53457 · Washington #MD00021008 · California #53457

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1265484240. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
419
Distinct HCPCS
6
Medicare allowed
$43,162
HCPCS Description Services Patients Avg allowed
G0318 Prolonged home or residence evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by the physician or qualif 138 36 $36
99497 Advance care planning, first 30 minutes 72 56 $93
99350 Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 71 37 $213
G2212 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 70 16 $36
99215 Established patient office or other outpatient visit, 40-54 minutes 42 16 $186
99345 Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes 26 26 $233

In context: peer comparison

Among 3 peers in this city , average services per provider: 73. This provider delivers 5.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
15
Patients
0
Total drug cost
$413
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 15 0 $413

Frequently asked questions

Auto-generated from federal data
What is Dr. Andrea Thach's medical specialty?
Dr. Andrea Thach practices Hospice and Palliative Medicine (Internal Medicine) Physician in Oakland, CA.
Where does Dr. Andrea Thach practice?
Dr. Andrea Thach practices at 3100 Summit St Fl 2, Oakland, CA 946093412. Office phone: 5102043410.
What is Dr. Andrea Thach's NPI?
Dr. Andrea Thach's National Provider Identifier (NPI) is 1265484240, issued by NPPES.
What procedures does Dr. Andrea Thach commonly perform?
Top Medicare-reported procedures in 2023: Prolonged home or residence evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by the physician or qualif (HCPCS G0318); Advance care planning (HCPCS 99497); Residence visit for established patient with high level of medical decision making (HCPCS 99350). Source: CMS Medicare Physician & Other Practitioners file.