Tiffany Jessica Diaz, M.D.
Family Medicine Physician · Schaumburg, IL
Tiffany Jessica Diaz, M.D. is a family medicine physician with a practice address in Schaumburg, Illinois, and NPI 1730403387, issued on Mar 24, 2010. Check the license (Illinois 036.131493, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Tiffany Jessica Diaz
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036.131493 IL
Self-reported in NPPES; status is on the state search - Practice location
- 25 E Schaumburg RD, Schaumburg, IL 60194
- Phone
- (847) 985-9390
- Enumerated
- Mar 24, 2010
- Record last updated
- Apr 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130802000192); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 25 E Schaumburg RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katheryn Abbott, PAPhysician Assistant1356842082
- Stephen Behnke, MDFamily Medicine Physician1427081272
- Mary Failla, RD, LDNRegistered Dietitian1659747921
- Sarah Goedjen, MAMental Health Counselor1619248580
- Cheryl Hazek, PSY.D., LCSWClinical Social Worker1134381668
- Jennifer JarrinProfessional Counselor1366869984
Verify Tiffany Jessica 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 036.131493Check 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% more Medicare Part D claims than the average family medicine physician in 2024
5,522 Medicare Part D claims for 492 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 185 claims were for opioids.
Most prescribed
- Atorvastatin Calcium400 claims
- Levothyroxine Sodium289 claims
- Amlodipine Besylate260 claims
- Lisinopril247 claims
- Losartan Potassium176 claims
- Metformin Hcl168 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: $71.75
1 payment: food and beverage; the largest payer was Inari Medical, 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
- Bonaventure Medical Foundation LLCHoffman Est, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tiffany Jessica Diaz among 6,215 family medicine physician records in Illinois
Tiffany Jessica Diaz, M.D. 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 2010, is newer than 57% of them.
- NPI issued2010 · 57% of these records are older, 41% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2010 · median 2006 among the 3,714 with a school on file
- Record last updated2021 · 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).
35 family medicine physician records list a practice address in Schaumburg
They are 35 of the 1,911 NPPES records with a practice address in Schaumburg, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Schaumburg → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Stephen Behnke, MDSchaumburg, IL 601941427081272
- Gregg Fenske, M.D.Hoffman Estates, IL 601941093833873
- Lynnelle Flores, M.D.Schaumburg, IL 601941992847586
- Ambereen Ghani, M.D.Schaumburg, IL 601941548468127
- Stanislav Grinberg, M.D.Schaumburg, IL 601941447604780
- Afshan Hameeduddin, MDSchaumburg, IL 601941992884084
- Ala Klimuk, M.D.Schaumburg, IL 601941366637480
- Jacqueline Mc Keigue, D.O.Hoffman Estates, IL 601941578681326
Common questions
What is Tiffany Jessica Diaz, M.D.'s NPI number?
Tiffany Jessica Diaz, M.D.'s National Provider Identifier (NPI) is 1730403387, issued on Mar 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Tiffany Jessica Diaz, M.D. located?
The NPPES record lists a practice address at 25 E Schaumburg RD, Schaumburg, IL, 60194. Phone: (847) 985-9390. Providers update this record themselves, so call before visiting.
How can I verify Tiffany Jessica Diaz, M.D.'s license?
NPPES lists Illinois license number 036.131493, 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 Tiffany Jessica Diaz, M.D. prescribe under Medicare Part D?
In 2024, Tiffany Jessica Diaz, M.D. had 5,522 Medicare Part D claims for 492 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.