Doctor profile · Federal record

Dr. Robert Quackenbush, M.D.

Medical Oncology Physician · Specialist · Walla Walla, WA

  • NPI 1962458877
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
401 W Poplar St
Walla Walla, WA 993622846
(509) 522-5700
fax (509) 522-5705
Mailing address
Po Box 32
Liberty Lake, WA 990190032

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
June 26, 2013
Specialty taxonomy
207RX0202X — NUCC code
State license (1)
Washington #MD00039975
Medicaid (3)
OR #227516 · ID #8060599 · WA #1118421

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1962458877. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
12
Distinct HCPCS
1
Medicare allowed
$864
HCPCS Description Services Patients Avg allowed
38222 Biopsy and aspiration of bone marrow sample for diagnosis 12 11 $72

In context: peer comparison

Among 1 peers in Walla Walla Medical Oncology Physician, average services per provider: 12. This provider delivers 1.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
626
Patients
67
Total drug cost
$49,243
Drug Type Claims Patients Total cost
Anastrozole Generic 202 38 $4,471
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 74 0 $3,442
Lorazepam Generic 51 14 $522
Eliquis (Apixaban) Brand 48 0 $26,672
Ondansetron Odt (Ondansetron) Brand 42 15 $652
Exemestane Generic 27 0 $3,394
Acyclovir Generic 26 0 $665
Oxycodone Hcl Generic 24 0 $497
Abiraterone Acetate Generic 23 0 $5,876
Potassium Chloride Generic 22 0 $593

Frequently asked questions

Auto-generated from federal data
What is Dr. Robert Quackenbush's medical specialty?
Dr. Robert Quackenbush practices Medical Oncology Physician in Walla Walla, WA.
Where does Dr. Robert Quackenbush practice?
Dr. Robert Quackenbush practices at 401 W Poplar St, Walla Walla, WA 993622846. Office phone: 5095225700.
What is Dr. Robert Quackenbush's NPI?
Dr. Robert Quackenbush's National Provider Identifier (NPI) is 1962458877, issued by NPPES.
What procedures does Dr. Robert Quackenbush commonly perform?
Top Medicare-reported procedures in 2023: Biopsy and aspiration of bone marrow sample for diagnosis (HCPCS 38222). Source: CMS Medicare Physician & Other Practitioners file.