Spencer G. Duncan, D.O.
Family Medicine Physician · Valley Center, KS
Spencer G. Duncan, D.O. is a family medicine physician with a practice address in Valley Center, Kansas, and NPI 1497934061, issued on Oct 30, 2007. Check the license (Kansas 05-34265, as entered in NPPES) on the Kansas State Board of Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Spencer G. Duncan
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 05-34265 KS
Self-reported in NPPES; status is on the state search - Practice location
- 641 N Seneca St, Valley Center, KS 67147
- Phone
- (316) 755-1511
- Enumerated
- Oct 30, 2007
- Record last updated
- Jan 23, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (316) 755-0991
- Medicare enrollment
- Enrolled (PECOS I20101020000323); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Physicians And Surgeons, 2005
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,970 in Kansas → Look up another NPI →
Also registered at 641 N Seneca St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stevie Winblad, M.D.Family Medicine Physician1912127408
Verify Spencer G. Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKansas State Board of Healing Arts
Search for license 05-34265Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average family medicine physician in 2024
7,980 Medicare Part D claims for 617 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 418 claims were for opioids.
Most prescribed
- Atorvastatin Calcium455 claims
- Levothyroxine Sodium339 claims
- Lisinopril276 claims
- Amlodipine Besylate259 claims
- Omeprazole257 claims
- Losartan Potassium218 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 70 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $785.94
41 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Wichita Family Medicine Specialists, LLCWichita, KS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Spencer G. Duncan among 1,970 family medicine physician records in Kansas
Spencer G. Duncan, D.O. is one of 1,970 family medicine physician records with a practice address in Kansas. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 49% of them.
- NPI issued2007 · 49% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2005 · median 2006 among the 1,164 with a school on file
- Record last updated2015 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Kansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 family medicine physician records list a practice address in Valley Center
They are 3 of the 21 NPPES records with a practice address in Valley Center, and 1,970 family medicine physician records in Kansas.
All 1,970 in Kansas → Every provider in Valley Center → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Russell Horn, D.O.Valley Center, KS 671471528062148
- Stevie Winblad, M.D.Valley Center, KS 671471912127408
- Larry Anderson, MDWellington, KS 671521760463798
- Lacie Gregory, MDWellington, KS 671521124223649
- Stephen Hawks, D.O.Wellington, KS 671521477544666
- Shana Jarmer, MDWellington, KS 671521699842799
- Tamara McCue, D.O.Wellington, KS 671521457339137
- Steven Scheufler, MDWellington, KS 671521447231428
Common questions
What is Spencer G. Duncan, D.O.'s NPI number?
Spencer G. Duncan, D.O.'s National Provider Identifier (NPI) is 1497934061, issued on Oct 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Spencer G. Duncan, D.O. located?
The NPPES record lists a practice address at 641 N Seneca St, Valley Center, KS, 67147. Phone: (316) 755-1511. Providers update this record themselves, so call before visiting.
How can I verify Spencer G. Duncan, D.O.'s license?
NPPES lists Kansas license number 05-34265, as entered by the provider. Search the Kansas State Board of Healing Arts at https://www.ksbha.ks.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Spencer G. Duncan, D.O. prescribe under Medicare Part D?
In 2024, Spencer G. Duncan, D.O. had 7,980 Medicare Part D claims for 617 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Spencer G. Duncan, D.O.'s MIPS final score?
The 2023 MIPS final score is 70 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.