Sian West-Porter, D.O.
Obstetrics & Gynecology Physician · Kalamazoo, MI
Sian West-Porter, D.O. is an obstetrics & gynecology physician with a practice address in Kalamazoo, Michigan, and NPI 1821479130, issued on Jun 11, 2015. Check the license (Michigan 5101021924, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Sian West-Porter
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 5101021924 MI
Self-reported in NPPES; status is on the state search - Practice location
- 601 John St Ste N1200, Kalamazoo, MI 49007
- Phone
- (269) 341-7979
- Enumerated
- Jun 11, 2015
- Record last updated
- Mar 13, 2023
- Medicare enrollment
- Enrolled (PECOS I20190713000055); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,776 in Michigan → Look up another NPI →
Also registered at 601 John St Ste N1200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gina Bravata, MDObstetrics Physician1376167536
- Gabraelle Foune, FNP-CFamily Nurse Practitioner1346875721
- Lydia Hartman, CNMAdvanced Practice Midwife1649534777
- Lily Hershberger, MSN, CNMAdvanced Practice Midwife1083113757
- Katherine Holden, DOObstetrics & Gynecology Physician1770144198
- Kristen Kent-Velocci, M.D.Obstetrics & Gynecology Physician1386026581
Verify Sian West-Porter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101021924Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
73 Medicare Part D claims for 31 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol23 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): 84.9 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: $106.54
5 payments; by number, the most common kind was food and beverage; the largest payer was Daiichi Sankyo Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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.
One hospital affiliation
- Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Sian West-Porter among 1,776 obstetrics & gynecology physician records in Michigan
Sian West-Porter, D.O. is one of 1,776 obstetrics & gynecology physician records with a practice address in Michigan. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 69% of them.
- NPI issued2015 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2015 · median 2007 among the 1,003 with a school on file
- Record last updated2023 · 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 207V00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Michigan
There are 1,776 obstetrics & gynecology physician records in Michigan.
All 1,776 in Michigan → Every provider in Kalamazoo → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Paul Berkowitz, MDKalamazoo, MI 490071013996255
- John Cooley, MDKalamazoo, MI 490071871561233
- Dana Dwyer, M.D.Kalamazoo, MI 490071376554493
- Gregory Feldmeier, M.D.Kalamazoo, MI 490071497736755
- Tom Garling, M.D.Kalamazoo, MI 490071780665257
- James Goodspeed, M.D.Kalamazoo, MI 490071568443042
- Malcolm Hamilton, M.D.Kalamazoo, MI 490071063493310
- Silvia Linares, MDKalamazoo, MI 490071952501975
Common questions
What is Sian West-Porter, D.O.'s NPI number?
Sian West-Porter, D.O.'s National Provider Identifier (NPI) is 1821479130, issued on Jun 11, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Sian West-Porter, D.O. located?
The NPPES record lists a practice address at 601 John St Ste N1200, Kalamazoo, MI, 49007. Phone: (269) 341-7979. Providers update this record themselves, so call before visiting.
How can I verify Sian West-Porter, D.O.'s license?
NPPES lists Michigan license number 5101021924, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sian West-Porter, D.O. prescribe under Medicare Part D?
In 2024, Sian West-Porter, D.O. had 73 Medicare Part D claims for 31 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Sian West-Porter, D.O.'s MIPS final score?
The 2023 MIPS final score is 84.9 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.