Natasha Diaz, MD
Family Medicine Physician · Chicago, IL
Natasha Diaz, MD is a family medicine physician with a practice address in Chicago, Illinois, and NPI 1659300408, issued on Jul 2, 2006. Check the license (Illinois 036-113339, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Natasha Diaz
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036-113339 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5359 W Fullerton Ave, Chicago, IL 60639
- Phone
- (773) 836-2785
- Enumerated
- Jul 2, 2006
- Record last updated
- Dec 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (773) 836-7381
- Medicaid ID
- 036113339 IL
- Medicare enrollment
- Enrolled (PECOS I20050906000142); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2001
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 5359 W Fullerton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ricardo Aguinaga, LCSWClinical Social Worker1215187661
- Gerardo AscencioHealth Educator1346180171
- Caitlyn Bell, PA-CPhysician Assistant1366108169
- Mary Rose Benson, LCSWClinical Social Worker1548733629
- Megan Bidgoli, MDFamily Medicine Physician1760642466
- Rachel Brdicka, FNPFamily Nurse Practitioner1043183288
Verify Natasha Diaz 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 036-113339Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
29 Medicare Part D claims for 19 beneficiaries, against an average of 3,544 among the 117,163 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.
Industry payments in 2024: $23.27
1 payment: food and beverage; the largest payer was Braeburn Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Pcc Community Wellness CenterOak Park, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Natasha Diaz among 6,215 family medicine physician records in Illinois
Natasha Diaz, MD is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2001 · median 2006 among the 3,714 with a school on file
- Record last updated2019 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,593 family medicine physician records list a practice address in Chicago
They are 1,593 of the 63,379 NPPES records with a practice address in Chicago, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Chicago → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jean Bourand, MDChicago, IL 606391770687279
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- Jim Christoforidis, M.D.Chicago, IL 606391578546222
- Julia Eckersley, MDChicago, IL 606391639116528
- Deborah Edberg, M.D.Chicago, IL 606391194758722
- Finicia Graham, MDChicago, IL 606391215196282
- Pawel Kwiecinski, M.D.Chicago, IL 606391871647925
- Ramiro Mercado, M.D.Chicago, IL 606391558329276
Common questions
What is Natasha Diaz, MD's NPI number?
Natasha Diaz, MD's National Provider Identifier (NPI) is 1659300408, issued on Jul 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Natasha Diaz, MD located?
The NPPES record lists a practice address at 5359 W Fullerton Ave, Chicago, IL, 60639. Phone: (773) 836-2785. Providers update this record themselves, so call before visiting.
How can I verify Natasha Diaz, MD's license?
NPPES lists Illinois license number 036-113339, 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 Natasha Diaz, MD prescribe under Medicare Part D?
In 2024, Natasha Diaz, MD had 29 Medicare Part D claims for 19 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.