NPPES file of Aug 9, 2026

Barbara Klempel, M.D.

Specialist · Chicago, IL

Barbara Klempel, M.D. is a specialist with a practice address in Chicago, Illinois, and NPI 1225107220, issued on Nov 6, 2006. Check the license with the Illinois board that licenses this profession; 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
1225107220
Name
Barbara Klempel
Credential
M.D.
Primary taxonomy
Specialist 174400000X
Practice location
1002 N.western Avenue, Chicago, IL 60622
Phone
(773) 777-4829
Enumerated
Nov 6, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20100505000853); accepts Medicare assignment
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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8 nearest specialist records → All 1,154 in Illinois → Look up another NPI →

Verify Barbara Klempel in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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
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86% more Medicare Part D claims than the average specialist in 2024

2,567 Medicare Part D claims for 136 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. 59 claims were for opioids.

  1. Barbara Klempel2,567
  2. Specialty average1,380

Most prescribed

  1. Gabapentin129 claims
  2. Clonazepam97 claims
  3. Montelukast Sodium78 claims
  4. Amlodipine Besylate64 claims
  5. Metoprolol Succinate62 claims
  6. Rosuvastatin Calcium62 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.

Barbara Klempel among 1,154 specialist records in Illinois

Barbara Klempel, M.D. is one of 1,154 specialist records with a practice address in Illinois. 19% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 58% newer
  • In a Medicare fileYes · 19% of these records are
  • In the CMS Doctors and Clinicians fileYes · 11% of these records are
  • Graduated1973 · median 1988 among the 127 with a school on file
  • Record last updated2007 · 84% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in Illinois

There are 1,154 specialist records in Illinois.

All 1,154 in Illinois → Every provider in Chicago → Specialist nationwide →

The 8 specialist records with the nearest ZIP codes

  1. Carmelita Carriaga, MD, FAAFPChicago, IL 606221194761031
  2. Ester Dionisio, MDChicago, IL 606221265598486
  3. Lisa Gold, MS, OTR LChicago, IL 606221477689594
  4. Chang Kim, M.D.Chicago, IL 606221548232895
  5. Andria Miller, D.V.M.Chicago, IL 606221447798871
  6. Abigail NelsonChicago, IL 606221619321023
  7. Prem Pahwa, M.D.Chicago, IL 606221649361791
  8. Alyssia Belk, M.EDChicago, IL 606231184038994

Common questions

What is Barbara Klempel, M.D.'s NPI number?

Barbara Klempel, M.D.'s National Provider Identifier (NPI) is 1225107220, issued on Nov 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Barbara Klempel, M.D. located?

The NPPES record lists a practice address at 1002 N.western Avenue, Chicago, IL, 60622. Phone: (773) 777-4829. Providers update this record themselves, so call before visiting.

How can I verify Barbara Klempel, M.D.'s license?

Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Barbara Klempel, M.D. prescribe under Medicare Part D?

In 2024, Barbara Klempel, M.D. had 2,567 Medicare Part D claims for 136 beneficiaries; the average among specialist prescribers was 1,380. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.