Joseph T. Bass, MD, PHD
Endocrinology, Diabetes & Metabolism Physician · Chicago, IL
Joseph T. Bass, MD, PHD is an endocrinology, diabetes & metabolism physician with a practice address in Chicago, Illinois, and NPI 1700810017, issued on Jul 10, 2006. Check the license (Illinois 036088733, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Joseph T. Bass
- Credential
- MD, PHD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 036088733 IL
Self-reported in NPPES; status is on the state search - Practice location
- 675 N Saint Clair St, Chicago, IL 60611
- Phone
- (312) 695-7970
- Enumerated
- Jul 10, 2006
- Record last updated
- Dec 14, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (312) 695-4433
- Medicare enrollment
- Enrolled (PECOS I20050909000390); accepts Medicare assignment
- Medical or professional school
- Medical College Of Pennsylvania, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph T. Bass 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 036088733Check 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 endocrinology, diabetes & metabolism physician in 2024
173 Medicare Part D claims for 23 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of claims.
Most prescribed
- Levothyroxine Sodium20 claims
- Metformin Hcl15 claims
- Humalog Kwikpen U-20012 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): 94.1 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
- Northwestern Medical Faculty FoundationEvanston, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph T. Bass among 436 endocrinology, diabetes & metabolism physician records in Illinois
Joseph T. Bass, MD, PHD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 62% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1991 · median 2006 among the 295 with a school on file
- Record last updated2011 · 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
- Grazia Aleppo, MDChicago, IL 606111689603268
- Grant Barish, M.D.Chicago, IL 606111265526073
- Gerhard Bauman, MDChicago, IL 606111457326910
- Mary Gillam, MDChicago, IL 606111588695084
- Allison Hahr, M.D.Chicago, IL 606111083774889
- Peter Kopp, M.D.Chicago, IL 606111598827842
- William Lowe, M.D.Chicago, IL 606111093879652
- Mark Molitch, MDChicago, IL 606111255365490
Common questions
What is Joseph T. Bass, MD, PHD's NPI number?
Joseph T. Bass, MD, PHD's National Provider Identifier (NPI) is 1700810017, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph T. Bass, MD, PHD located?
The NPPES record lists a practice address at 675 N Saint Clair St, Chicago, IL, 60611. Phone: (312) 695-7970. Providers update this record themselves, so call before visiting.
How can I verify Joseph T. Bass, MD, PHD's license?
NPPES lists Illinois license number 036088733, 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 Joseph T. Bass, MD, PHD prescribe under Medicare Part D?
In 2024, Joseph T. Bass, MD, PHD had 173 Medicare Part D claims for 23 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Joseph T. Bass, MD, PHD's MIPS final score?
The 2023 MIPS final score is 94.1 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.