Doctor profile · Federal record

Dr. Christal Duncan, MD

Obstetrics & Gynecology Physician · Yreka, CA

  • NPI 1669476578
  • 21 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
475 Bruce St
Yreka, CA 960973474
(530) 842-4337
fax (530) 842-9121

Credentials & registration

NPPES · NUCC
NPI registered
June 2005 — 21 yrs on file
Profile last updated
March 20, 2012
Specialty taxonomy
207V00000X — NUCC code
State license (1)
California #G68173
Medicaid
CA #00G681730

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1669476578. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
25
Distinct HCPCS
1
Medicare allowed
$107
HCPCS Description Services Patients Avg allowed
82270 Stool analysis for blood to screen for colon tumors 25 25 $4

In context: peer comparison

Among 1 peers in Yreka Obstetrics & Gynecology Physician, average services per provider: 25. This provider delivers 1.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
365
Patients
49
Total drug cost
$52,672
Drug Type Claims Patients Total cost
Estradiol Generic 93 32 $1,996
Tamsulosin Hcl Generic 50 0 $963
Oxybutynin Chloride ER (Oxybutynin Chloride) Brand 44 17 $2,408
Gemtesa (Vibegron) Brand 27 0 $18,650
Estradiol (Twice Weekly) (Estradiol) Brand 26 0 $3,164
Tolterodine Tartrate Generic 22 0 $2,901
Medroxyprogesterone Acetate Generic 21 0 $258
Myrbetriq (Mirabegron) Brand 16 0 $19,973
Alendronate Sodium Generic 15 0 $333
Levothyroxine Sodium Generic 15 0 $218

Frequently asked questions

Auto-generated from federal data
What is Dr. Christal Duncan's medical specialty?
Dr. Christal Duncan practices Obstetrics & Gynecology Physician in Yreka, CA.
Where does Dr. Christal Duncan practice?
Dr. Christal Duncan practices at 475 Bruce St, Yreka, CA 960973474. Office phone: 5308424337.
What is Dr. Christal Duncan's NPI?
Dr. Christal Duncan's National Provider Identifier (NPI) is 1669476578, issued by NPPES.
What procedures does Dr. Christal Duncan commonly perform?
Top Medicare-reported procedures in 2023: Stool analysis for blood to screen for colon tumors (HCPCS 82270). Source: CMS Medicare Physician & Other Practitioners file.