Allison Margaret Saiz, MD
Gynecologic Oncology Physician · Chicago, IL
Allison Margaret Saiz, MD is a gynecologic oncology physician with a practice address in Chicago, Illinois, and NPI 1174910657, issued on Apr 22, 2015. Check the license (Illinois 036-149901, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Allison Margaret Saiz
- Credential
- MD
- Primary taxonomy
- Gynecologic Oncology Physician 207VX0201X
- License number
- 036-149901 IL
Self-reported in NPPES; status is on the state search - Practice location
- 250 E Superior St Ste 5-2175, Chicago, IL 60611
- Phone
- (312) 472-3970
- Enumerated
- Apr 22, 2015
- Record last updated
- Dec 7, 2022
- Medicare enrollment
- Enrolled (PECOS I20230120002264); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest gynecologic oncology physician records → All 76 in Illinois → Look up another NPI →
Verify Allison Margaret Saiz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-149901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average gynecologic oncology physician in 2024
159 Medicare Part D claims for 56 beneficiaries, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D. 55 claims were for opioids.
Most prescribed
- Oxycodone Hcl48 claims
- Ondansetron Odt40 claims
- Ibuprofen38 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.
Industry payments in 2024: $163.86
2 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 1,199 providers of this specialty with any payment received $6,387.20 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
- Permanente Medical Group IncSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allison Margaret Saiz among 76 gynecologic oncology physician records in Illinois
Allison Margaret Saiz, MD is one of 76 gynecologic oncology physician records with a practice address in Illinois. 82% 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 80% of them.
- NPI issued2015 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2015 · median 2008 among the 52 with a school on file
- Record last updated2022 · 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 207VX0201X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecologic Oncology Physician providers in Illinois
There are 76 gynecologic oncology physician records in Illinois.
All 76 in Illinois → Every provider in Chicago → Gynecologic Oncology Physician nationwide →
The 8 gynecologic oncology physician records with the nearest ZIP codes
- Amina Ahmed, MDChicago, IL 606111154372068
- Amy Alexander, M.D.Chicago, IL 606111831432087
- Emma BarberChicago, IL 606111346551561
- Olivia Foley, MDChicago, IL 606111043715592
- Allison Grubbs, MDChicago, IL 606111962866913
- Emily Hinchcliff, M.D.Chicago, IL 606111558707877
- John Lurain, MDChicago, IL 606111902835853
- Jenna Marcus, M.D.Chicago, IL 606111386871689
Common questions
What is Allison Margaret Saiz, MD's NPI number?
Allison Margaret Saiz, MD's National Provider Identifier (NPI) is 1174910657, issued on Apr 22, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Allison Margaret Saiz, MD located?
The NPPES record lists a practice address at 250 E Superior St Ste 5-2175, Chicago, IL, 60611. Phone: (312) 472-3970. Providers update this record themselves, so call before visiting.
How can I verify Allison Margaret Saiz, MD's license?
NPPES lists Illinois license number 036-149901, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Allison Margaret Saiz, MD prescribe under Medicare Part D?
In 2024, Allison Margaret Saiz, MD had 159 Medicare Part D claims for 56 beneficiaries; the average among gynecologic oncology physician prescribers was 195. 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.