Niki M. Milleson, D.O.
Family Medicine Physician · Afton, WY
Niki M. Milleson, D.O. is a family medicine physician with a practice address in Afton, Wyoming, and NPI 1225155997, issued on Mar 26, 2007. Check the license (Wyoming 8420A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Niki M. Milleson
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 8420A WY
Self-reported in NPPES; status is on the state search - Practice location
- 110 Hospital Lane, Afton, WY 83110
- Phone
- (307) 885-5852
- Enumerated
- Mar 26, 2007
- Record last updated
- Apr 24, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (307) 885-5889
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 400 in Wyoming → Look up another NPI →
Also registered at 110 Hospital Lane
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Allen Carter, MDFamily Medicine Physician1073549952
- Kitchener Head, MDFamily Medicine Physician1538195417
- Kyle Hirschi, PA-CPhysician Assistant1881841898
- Christian Morgan, M.D.Family Medicine Physician1457358962
- David Olsen, CRNACertified Registered Nurse Anesthetist1770517344
- Michael Pieper, D.O.Family Medicine Physician1174717128
Verify Niki M. Milleson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 8420ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average family medicine physician in 2024
3,065 Medicare Part D claims for 256 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 147 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium167 claims
- Levothyroxine Sodium128 claims
- Losartan Potassium128 claims
- Lisinopril115 claims
- Atorvastatin Calcium90 claims
- Omeprazole85 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.
Niki M. Milleson among 400 family medicine physician records in Wyoming
Niki M. Milleson, D.O. is one of 400 family medicine physician records with a practice address in Wyoming. 80% 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 46% of them.
- NPI issued2007 · 46% of these records are older, 49% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2012 · 50% 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 Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 family medicine physician records list a practice address in Afton
They are 9 of the 103 NPPES records with a practice address in Afton, and 400 family medicine physician records in Wyoming.
All 400 in Wyoming → Every provider in Afton → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Clayton Brown, MDAfton, WY 831101033557657
- Allen Carter, MDAfton, WY 831101073549952
- Donna Givens, MDAfton, WY 831101811063407
- Kitchener Head, MDAfton, WY 831101538195417
- Christian Morgan, M.D.Afton, WY 831101457358962
- Sara Pettinelli, MDAfton, WY 831101164166229
- Michael Pieper, D.O.Afton, WY 831101174717128
- Noel Stibor, M.D.Afton, WY 831101750327979
Common questions
What is Niki M. Milleson, D.O.'s NPI number?
Niki M. Milleson, D.O.'s National Provider Identifier (NPI) is 1225155997, issued on Mar 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Niki M. Milleson, D.O. located?
The NPPES record lists a practice address at 110 Hospital Lane, Afton, WY, 83110. Phone: (307) 885-5852. Providers update this record themselves, so call before visiting.
How can I verify Niki M. Milleson, D.O.'s license?
NPPES lists Wyoming license number 8420A, as entered by the provider. Search the Wyoming Board of Medicine at https://wyomedboard.wyo.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Niki M. Milleson, D.O. prescribe under Medicare Part D?
In 2024, Niki M. Milleson, D.O. had 3,065 Medicare Part D claims for 256 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.