Doctor profile · Federal record

Dr. Joann Timberlake, PA

Emergency Medicine Physician (CMS: Physician Assistant) · Orange, CA

  • NPI 1043241094
  • Accepts Medicare
  • MIPS 68.3 / 100 · 2023
  • 21 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1100 West Stewart Drive
Orange, CA 928683849
(714) 633-9111
Mailing address
Po Box 690
Long Beach, CA 908010690

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Year of graduation
2005 — 21 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
California #PA18228

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1043241094. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
217
Distinct HCPCS
1
Medicare allowed
$12,832
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 217 197 $59

In context: peer comparison

Among 51 peers in Orange Emergency Medicine Physician, average services per provider: 60. This provider delivers 3.6× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$49
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Siemens Medical Solutions USA, INC. 1 $29.92
Novocure INC. 1 $19.20

By nature of payment

Food and Beverage
$49

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
38
Patients
17
Total drug cost
$360
Drug Type Claims Patients Total cost
Tamsulosin Hcl Generic 38 17 $360

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Joann Timberlake's medical specialty?
Dr. Joann Timberlake practices Emergency Medicine Physician in Orange, CA.
Where does Dr. Joann Timberlake practice?
Dr. Joann Timberlake practices at 1100 West Stewart Drive, Orange, CA 928683849. Office phone: 7146339111.
What is Dr. Joann Timberlake's NPI?
Dr. Joann Timberlake's National Provider Identifier (NPI) is 1043241094, issued by NPPES.
Does Dr. Joann Timberlake accept Medicare assignment?
Yes. Dr. Joann Timberlake accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joann Timberlake commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.