Doctor profile · Federal record

Dr. Martha Davis, PHD

Clinical Psychologist · Des Moines, WA

  • NPI 1104891977
  • Accepts Medicare
  • 38 yrs in practice
  • Female
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
22517 7Th Ave S
Des Moines, WA 981986820
(206) 870-9051
fax (206) 870-9081

Credentials & registration

NPPES · NUCC
NPI registered
February 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Year of graduation
1988 — 38 yrs since
Specialty taxonomy
103TC0700X — NUCC code
State license (1)
Washington #1558

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1104891977. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
423
Distinct HCPCS
2
Medicare allowed
$65,985
HCPCS Description Services Patients Avg allowed
90837 Psychotherapy, 1 hour 412 37 $155
90791 Psychiatric diagnostic evaluation 11 11 $185

In context: peer comparison

Among 1 peers in this city , average services per provider: 211. This provider delivers 2.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Martha Davis's medical specialty?
Dr. Martha Davis practices Clinical Psychologist in Des Moines, WA.
Where does Dr. Martha Davis practice?
Dr. Martha Davis practices at 22517 7Th Ave S, Des Moines, WA 981986820. Office phone: 2068709051.
What is Dr. Martha Davis's NPI?
Dr. Martha Davis's National Provider Identifier (NPI) is 1104891977, issued by NPPES.
Does Dr. Martha Davis accept Medicare assignment?
Yes. Dr. Martha Davis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Martha Davis commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837); Psychiatric diagnostic evaluation (HCPCS 90791). Source: CMS Medicare Physician & Other Practitioners file.