Jan K. Siebersma, M.D.
Obstetrics & Gynecology Physician · Lander, WY
Jan K. Siebersma, M.D. is an obstetrics & gynecology physician with a practice address in Lander, Wyoming, and NPI 1952303216, issued on Jun 1, 2005. Check the license (Wyoming 8076A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Jan K. Siebersma
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 8076A WY
92-345 NM
Self-reported in NPPES; status is on the state search - Practice location
- 745 Buena Vista Dr, Lander, WY 82520
- Phone
- (307) 332-2941
- Enumerated
- Jun 1, 2005
- Record last updated
- Jun 15, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (307) 332-1920
- Medicaid ID
- F6662 NM
- Medicare enrollment
- Enrolled (PECOS I20090501000150); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 72 in Wyoming → Look up another NPI →
Also registered at 745 Buena Vista Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Todd Bainter, D.O.Internal Medicine Physician1427226034
- James Brubaker, M.D.Obstetrics & Gynecology Physician1245326867
- Kristine Cardinal, FNP-CFamily Nurse Practitioner1093203069
- Robert Darr, PA-CPhysician Assistant1942301254
- Edward Dowie, P.A.-C.Physician Assistant1366538969
- Wendy Eaton, MSPTPhysical Therapist1457559940
Verify Jan K. Siebersma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 8076ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
138 Medicare Part D claims for 48 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol22 claims
- Metronidazole12 claims
- Clotrimazole11 claims
- Fluconazole11 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.
Bills Medicare through one group practice
- Lander Medical Clinic PCLander, WY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jan K. Siebersma among 72 obstetrics & gynecology physician records in Wyoming
Jan K. Siebersma, M.D. is one of 72 obstetrics & gynecology physician records with a practice address in Wyoming. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1983 · median 2000 among the 46 with a school on file
- Record last updated2015 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 obstetrics & gynecology physician records list a practice address in Lander
They are 5 of the 311 NPPES records with a practice address in Lander, and 72 obstetrics & gynecology physician records in Wyoming.
All 72 in Wyoming → Every provider in Lander → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- James Brubaker, M.D.Lander, WY 825201245326867
- Thomas Dunaway, MDLander, WY 825201457454837
- Ken Holt, D.O.Lander, WY 825201104894047
- Karla Wagner, M.D.Lander, WY 825201942395652
- Maryanne Hannaney, MDRiverton, WY 825011497797260
- Patricia Bell, DOCasper, WY 826011427026277
- Melissa Hieb, D.O.Casper, WY 826011225255466
- Carrie Merrill, DOCasper, WY 826011346382918
Common questions
What is Jan K. Siebersma, M.D.'s NPI number?
Jan K. Siebersma, M.D.'s National Provider Identifier (NPI) is 1952303216, issued on Jun 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jan K. Siebersma, M.D. located?
The NPPES record lists a practice address at 745 Buena Vista Dr, Lander, WY, 82520. Phone: (307) 332-2941. Providers update this record themselves, so call before visiting.
How can I verify Jan K. Siebersma, M.D.'s license?
NPPES lists Wyoming license number 8076A, 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 Jan K. Siebersma, M.D. prescribe under Medicare Part D?
In 2024, Jan K. Siebersma, M.D. had 138 Medicare Part D claims for 48 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.