NPPES file of Aug 9, 2026

Maria Concepcion Reyes, M.D.

Internal Medicine Physician · Chicago, IL

Maria Concepcion Reyes, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1508805029, issued on Jun 6, 2006. Check the license (Illinois 036092865, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1508805029
Name
Maria Concepcion Reyes
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
036092865 IL
Self-reported in NPPES; status is on the state search
Practice location
1300 W Belmont Ave, Chicago, IL 60657
Phone
(773) 975-8900
Enumerated
Jun 6, 2006
Record last updated
Jan 13, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(773) 975-8901
Medicare enrollment
Enrolled (PECOS I20070416000519); accepts Medicare assignment
Medical or professional school
Chicago College Of Medicine And Surgery, 1993
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1300 W Belmont Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Stefanie Adess, LCSWClinical Social Worker1295984649
  2. Shisha Amabel, M.S.Clinical Social Worker1811970213
  3. Irene Anderson, IRENE ANDERSONMarriage & Family Therapist1588712244
  4. Rachel Aredia, MAProfessional Counselor1235537556
  5. Jae AvilezMarriage & Family Therapist1164279147
  6. Dana Baerger, J.D., PH.D.Clinical Psychologist1356473805

Verify Maria Concepcion Reyes in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036092865
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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60% fewer Medicare Part D claims than the average internal medicine physician in 2024

1,276 Medicare Part D claims for 131 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 35 claims were for opioids.

  1. Maria Reyes1,276
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium104 claims
  2. Rosuvastatin Calcium95 claims
  3. Levothyroxine Sodium81 claims
  4. Losartan Potassium51 claims
  5. Amlodipine Besylate43 claims
  6. Metformin Hcl Er42 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.

Bills Medicare through one group practice

  1. Rush University Medical GroupChicago, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Maria Concepcion Reyes among 7,238 internal medicine physician records in Illinois

Maria Concepcion Reyes, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 61% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated1993 · median 2003 among the 3,580 with a school on file
  • Record last updated2015 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2,867 internal medicine physician records list a practice address in Chicago

They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Bruce Blacker, M.D.Chicago, IL 606571982603924
  2. Brian Boholst, M.D.Chicago, IL 606571235181959
  3. Edgar Borda, MDChicago, IL 606571891782447
  4. Harold EulienChicago, IL 606571700877222
  5. Lisa Greising, M.D.Chicago, IL 606571578523155
  6. Michael Grendon, M.D.Chicago, IL 606571922007962
  7. Catherine Kallal, MDChicago, IL 606571407801665
  8. Alam Khan, M.D.Chicago, IL 606571316946288

Common questions

What is Maria Concepcion Reyes, M.D.'s NPI number?

Maria Concepcion Reyes, M.D.'s National Provider Identifier (NPI) is 1508805029, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Maria Concepcion Reyes, M.D. located?

The NPPES record lists a practice address at 1300 W Belmont Ave, Chicago, IL, 60657. Phone: (773) 975-8900. Providers update this record themselves, so call before visiting.

How can I verify Maria Concepcion Reyes, M.D.'s license?

NPPES lists Illinois license number 036092865, 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 Maria Concepcion Reyes, M.D. prescribe under Medicare Part D?

In 2024, Maria Concepcion Reyes, M.D. had 1,276 Medicare Part D claims for 131 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.