Doctor profile · Federal record

Dr. Spencer Duncan, D.O.

Family Medicine Physician (CMS: Family Practice) · Valley Center, KS

  • NPI 1497934061
  • Accepts Medicare
  • MIPS 70.0 / 100 · 2023
  • 21 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
641 N Seneca St
Valley Center, KS 671478208
(316) 755-1511
fax (316) 755-0991
Mailing address
Po Box 388
Valley Center, KS 671470388

Credentials & registration

NPPES · NUCC
NPI registered
October 2007 — 19 yrs on file
Profile last updated
January 23, 2015
Year of graduation
2005 — 21 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
Kansas #05-34265

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1497934061. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,092
Distinct HCPCS
10
Medicare allowed
$140,293
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 607 243 $119
36415 Insertion of needle into vein for collection of blood sample 557 242 $8
99213 Established patient office or other outpatient visit, 20-29 minutes 251 147 $84
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 118 118 $121
81003 Automated urinalysis test 79 75 $2
85610 Blood test, clotting time 67 11 $4
96372 Injection of drug or substance under skin or into muscle 52 15 $13
G0009 Administration of pneumococcal vaccine 51 51 $24
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 44 44 $275
G0008 Administration of influenza virus vaccine 43 43 $29

In context: peer comparison

Among 1 peers in Valley Center Family Medicine Physician, average services per provider: 104. This provider delivers 20× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$786
Transactions
41
Manufacturers
13
Payer (manufacturer) Industry Txns Amount
AstraZeneca Pharmaceuticals Lp 11 $246.54
Novo Nordisk INC 6 $98.81
Lilly USA, LLC 5 $75.19
Salix Pharmaceuticals, A Division of Bausch Health US, LLC 3 $68.13
Amgen INC. 3 $59.89
GlaxoSmithKline, LLC. 3 $45.87
Abbott Laboratories 2 $45.46
Abbvie INC. 1 $30.94
Pfizer INC. 2 $28.62
Phathom Pharmaceuticals, INC. 2 $28.56
Merck Sharp & Dohme LLC 1 $20.16
Novartis Pharmaceuticals Corporation 1 $18.91
Antares Pharma, INC. 1 $18.86

By nature of payment

Food and Beverage
$786

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,212
Patients
851
Total drug cost
$29,451
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 469 126 $3,938
Levothyroxine Sodium Generic 355 88 $3,254
Lisinopril Generic 274 82 $1,499
Omeprazole Generic 266 76 $1,995
Amlodipine Besylate Generic 258 69 $1,199
Simvastatin Generic 212 65 $1,554
Gabapentin Generic 183 38 $4,197
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 182 37 $2,641
Losartan Potassium Generic 171 48 $1,347
Metoprolol Succinate Generic 170 40 $1,694

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Spencer Duncan's medical specialty?
Dr. Spencer Duncan practices Family Medicine Physician in Valley Center, KS.
Where does Dr. Spencer Duncan practice?
Dr. Spencer Duncan practices at 641 N Seneca St, Valley Center, KS 671478208. Office phone: 3167551511.
What is Dr. Spencer Duncan's NPI?
Dr. Spencer Duncan's National Provider Identifier (NPI) is 1497934061, issued by NPPES.
Does Dr. Spencer Duncan accept Medicare assignment?
Yes. Dr. Spencer Duncan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Spencer Duncan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.