Aleyda Maria San Hernandez, MD
Endocrinology, Diabetes & Metabolism Physician · Chicago, IL
Aleyda Maria San Hernandez, MD is an endocrinology, diabetes & metabolism physician with a practice address in Chicago, Illinois, and NPI 1609526433, issued on Mar 25, 2022. Check the license (Illinois 036175266, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Aleyda Maria San Hernandez
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 036175266 IL
125079212 IL
Self-reported in NPPES; status is on the state search - Practice location
- 600 S Paulina St, Chicago, IL 60612
- Phone
- (312) 864-0540
- Enumerated
- Mar 25, 2022
- Record last updated
- Jul 7, 2025
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →
Also registered at 600 S Paulina St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Aleyda Maria San Hernandez 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 036175266Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
102 Medicare Part D claims for 42 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D.
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.
Aleyda Maria San Hernandez among 436 endocrinology, diabetes & metabolism physician records in Illinois
Aleyda Maria San Hernandez, MD is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2025 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Illinois
There are 436 endocrinology, diabetes & metabolism physician records in Illinois.
All 436 in Illinois → Every provider in Chicago → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Ambika Amblee, MDChicago, IL 606121225090590
- Antonio Bianco, M.D.Chicago, IL 606121720225188
- Yuval Eisenberg, M.D.Chicago, IL 606121366685828
- Leon Fogelfeld, M.D.Chicago, IL 606121699732305
- Rasa Kazlauskaite, MD, MSC, FACEChicago, IL 606121487609954
- Subhash Kukreja, M.D.Chicago, IL 606121962511238
- Evelyn Lacuesta, M.D.Chicago, IL 606121730122672
- Susana Mascarell, M.DChicago, IL 606121700831328
Common questions
What is Aleyda Maria San Hernandez, MD's NPI number?
Aleyda Maria San Hernandez, MD's National Provider Identifier (NPI) is 1609526433, issued on Mar 25, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Aleyda Maria San Hernandez, MD located?
The NPPES record lists a practice address at 600 S Paulina St, Chicago, IL, 60612. Phone: (312) 864-0540. Providers update this record themselves, so call before visiting.
How can I verify Aleyda Maria San Hernandez, MD's license?
NPPES lists Illinois license number 036175266, 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 Aleyda Maria San Hernandez, MD prescribe under Medicare Part D?
In 2024, Aleyda Maria San Hernandez, MD had 102 Medicare Part D claims for 42 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.