Aliza Machefsky
Obstetrics Physician · Saint Louis, MO
Aliza Machefsky is an obstetrics physician with a practice address in Saint Louis, Missouri, and NPI 1841646908, issued on May 9, 2016. Check the license (Missouri 2016020843, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Aliza Machefsky
- Primary taxonomy
- Obstetrics Physician 207VX0000X
- License numbers
- 2016020843 MO
86229 GA
Self-reported in NPPES; status is on the state search - Practice location
- 6420 Clayton RD, Saint Louis, MO 63117
- Phone
- (314) 781-4772
- Enumerated
- May 9, 2016
- Record last updated
- May 22, 2026
- Medicare enrollment
- Enrolled (PECOS I20210209001234); accepts Medicare assignment
- Medical or professional school
- Drexel University College Of Medicine, 2016
- Entity
- Type 1 · individual
Also registered at 6420 Clayton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sana Afzal, MDInternal Medicine Physician1083579213
- Munir Ahmad, M.D.Nuclear Medicine Physician1356381438
- John Alexander, MDAnesthesiology Physician1477541100
- Kahee Amedi, MDHospitalist Physician1215382189
- Larisa Anokhin, CRNACertified Registered Nurse Anesthetist1023047131
- Monika Aplyn, M.D.Internal Medicine Physician1336195247
Verify Aliza Machefsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2016020843Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average obstetrics physician in 2024
16 Medicare Part D claims, against an average of 218 among the 863 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Estradiol11 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 MIPS final score for 2023 (Medicare payment program): 92.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The Emory Clinic IncAtlanta, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Obstetrics Physician providers in Missouri
There are 23 obstetrics physician records in Missouri.
Other obstetrics physician records in Missouri
- Najat Al-Sherri, M.D.Arnold, MO1407295298
- Ann Behrend, M.D.Cape Girardeau, MO1548226897
- Katherine ChenRichmond Heights, MO1740819937
- William Gerber, M.D.Saint Louis, MO1225069719
- Generoso Guzman, MDHayti, MO1295842342
- Dianna Hickman, M.D.Kansas City, MO1417956897
- Regina Kizer, DNP, CNMSpringfield, MO1578062436
- Donald Lange, MDSaint Louis, MO1356332761
- Uneeda Leverett, M.D.Lees Summit, MO1962478677
- Lola Loeb, MDSt Louis, MO1194904755
Common questions
What is Aliza Machefsky's NPI number?
Aliza Machefsky's National Provider Identifier (NPI) is 1841646908, issued on May 9, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Aliza Machefsky located?
The NPPES record lists a practice address at 6420 Clayton RD, Saint Louis, MO, 63117. Phone: (314) 781-4772. Providers update this record themselves, so call before visiting.
How can I verify Aliza Machefsky's license?
NPPES lists Missouri license number 2016020843, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Aliza Machefsky prescribe under Medicare Part D?
In 2024, Aliza Machefsky had 16 Medicare Part D claims; the average among obstetrics physician prescribers was 218. Part D covers Medicare prescriptions only.
What is Aliza Machefsky's MIPS final score?
The 2023 MIPS final score is 92.3 of 100. 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.