NPPES file of Aug 9, 2026

Karen O' Connor Perla, M.D.

Family Medicine Physician · Chicago, IL

Karen O' Connor Perla, M.D. is a family medicine physician with a practice address in Chicago, Illinois, and NPI 1538512280, issued on Jul 18, 2016. Check the license (Illinois 036.148803, 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
1538512280
Name
Karen O' Connor Perla
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
036.148803 IL
125068575 IL
D0106419 MD
Self-reported in NPPES; status is on the state search
Practice location
1431 N Western Ave Ste 406, Chicago, IL 60622
Phone
(312) 633-5841
Enumerated
Jul 18, 2016
Record last updated
Jun 30, 2026
Fax
(312) 491-5020
Medicare enrollment
Enrolled (PECOS I20191009000707); 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 family medicine physician records → All 6,215 in Illinois → Look up another NPI →

Also registered at 1431 N Western Ave Ste 406

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

  1. Abdullah Al-Qudah, MDStudent in an Organized Health Care Education/Training Program1407795370
  2. Basit Bolarinwa, MDStudent in an Organized Health Care Education/Training Program1730029166
  3. Tevin Brown, MDStudent in an Organized Health Care Education/Training Program1821784133
  4. Alejandro Campos Munoz, MDStudent in an Organized Health Care Education/Training Program1033844881
  5. Ravnoor Chandi, MDStudent in an Organized Health Care Education/Training Program1932891728
  6. Megan Cho, MDStudent in an Organized Health Care Education/Training Program1386212868

Verify Karen O' Connor Perla 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 036.148803    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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55% fewer Medicare Part D claims than the average family medicine physician in 2024

1,609 Medicare Part D claims for 121 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Karen O' Connor Perla1,609
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium112 claims
  2. Metformin Hcl108 claims
  3. Lisinopril69 claims
  4. Amlodipine Besylate55 claims
  5. Levothyroxine Sodium54 claims
  6. Trulicity47 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. Primecare Community Health, Inc.Chicago, IL

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

Karen O' Connor Perla among 6,215 family medicine physician records in Illinois

Karen O' Connor Perla, 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 2016, is newer than 70% of them.

  • NPI issued2016 · 70% of these records are older, 27% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2011 · median 2006 among the 3,714 with a school on file
  • Record last updated2026 · 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

  1. Peggy Bandy, M.D.Chicago, IL 606221265414700
  2. Hector Bustamante, MDChicago, IL 606221194756908
  3. Cesar Carranza, MDChicago, IL 606221447207022
  4. Milton Chavez, M.D.Chicago, IL 606221700869450
  5. Manuel Franco, MDChicago, IL 606221083671341
  6. Michael Friedman, M.D.Chicago, IL 606221487638953
  7. Christopher Guerrero, MDChicago, IL 606221376511345
  8. Mark Loafman, MDChicago, IL 606221679507487

Common questions

What is Karen O' Connor Perla, M.D.'s NPI number?

Karen O' Connor Perla, M.D.'s National Provider Identifier (NPI) is 1538512280, issued on Jul 18, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Karen O' Connor Perla, M.D. located?

The NPPES record lists a practice address at 1431 N Western Ave Ste 406, Chicago, IL, 60622. Phone: (312) 633-5841. Providers update this record themselves, so call before visiting.

How can I verify Karen O' Connor Perla, M.D.'s license?

NPPES lists Illinois license number 036.148803, 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 Karen O' Connor Perla, M.D. prescribe under Medicare Part D?

In 2024, Karen O' Connor Perla, M.D. had 1,609 Medicare Part D claims for 121 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.

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.