NPPES file of Aug 9, 2026

Alejandra Perez-Tamayo

Surgery Physician · Chicago, IL

Alejandra Perez-Tamayo is a surgery physician with a practice address in Chicago, Illinois, and NPI 1821416165, issued on Apr 3, 2014. Check the license (Illinois 036.149537, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821416165
Name
Alejandra Perez-Tamayo
Primary taxonomy
Surgery Physician 208600000X
License number
036.149537 IL
Self-reported in NPPES; status is on the state search
Practice location
1801 W. Taylor Street, Chicago, IL 60612
Phone
(312) 996-2061
Enumerated
Apr 3, 2014
Record last updated
Apr 14, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(312) 996-1214
Medicare enrollment
Enrolled (PECOS I20201104002623); 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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Also registered at 1801 W. Taylor Street

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

  1. Roxana Aguirre CastanedaPediatric Endocrinology Physician1871755298
  2. Richard Anzalone, PHARMDOncology Pharmacist1508922980

Verify Alejandra Perez-Tamayo 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 036.149537
    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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66% fewer Medicare Part D claims than the average surgery physician in 2024

50 Medicare Part D claims for 33 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.

  1. Alejandra Perez-Tamayo50
  2. Specialty average147

Most prescribed

  1. Gavilyte-G11 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 practice group's MIPS final score for 2023 (Medicare payment program): 87.1 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score70.8
  2. Costout of 100 · 30%52.8
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $170.73

2 payments; by number, the most common kind was food and beverage; the largest payer was Axonics, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alejandra Perez-Tamayo$170.73
  2. Specialty average$3,513.80

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Cook CountyChicago, IL
  2. The Board OF Trustees OF The University OF IllinoisChicago, IL

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

Alejandra Perez-Tamayo among 1,520 surgery physician records in Illinois

Alejandra Perez-Tamayo is one of 1,520 surgery physician records with a practice address in Illinois. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 60% of them.

  • NPI issued2014 · 60% of these records are older, 39% newer
  • In a Medicare fileYes · 66% of these records are
  • In the CMS Doctors and Clinicians fileYes · 43% of these records are
  • Graduated2014 · median 2004 among the 650 with a school on file
  • Record last updated2021 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in Illinois

There are 1,520 surgery physician records in Illinois.

The 8 surgery physician records with the nearest ZIP codes

  1. Amelia BartholomewChicago, IL 606121447356886
  2. Steven Bines, MDChicago, IL 606121609833086
  3. Steven Bonomo, MDChicago, IL 606121861478893
  4. Diane Drugas, M.D.Chicago, IL 606121457436776
  5. Burnetta Herron, M.D.Chicago, IL 606121841211513
  6. Chad Kessler, MDChicago, IL 606121386624948
  7. Katherine Liu, M.D.Chicago, IL 606121184673832
  8. Elizabeth Marcus, MDChicago, IL 606121457464638

Common questions

What is Alejandra Perez-Tamayo's NPI number?

Alejandra Perez-Tamayo's National Provider Identifier (NPI) is 1821416165, issued on Apr 3, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Alejandra Perez-Tamayo located?

The NPPES record lists a practice address at 1801 W. Taylor Street, Chicago, IL, 60612. Phone: (312) 996-2061. Providers update this record themselves, so call before visiting.

How can I verify Alejandra Perez-Tamayo's license?

NPPES lists Illinois license number 036.149537, 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 Alejandra Perez-Tamayo prescribe under Medicare Part D?

In 2024, Alejandra Perez-Tamayo had 50 Medicare Part D claims for 33 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

What is Alejandra Perez-Tamayo's MIPS final score?

The 2023 MIPS final score is 87.1 of 100, reported for the practice group. 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.