NPPES file of Aug 9, 2026

Paul Nasilowski, M.D

Geriatric Medicine (Internal Medicine) Physician · Chicago, IL

Paul Nasilowski, M.D is a geriatric medicine (internal medicine) physician with a practice address in Chicago, Illinois, and NPI 1386740363, issued on Sep 16, 2006. Check the license 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
1386740363
Name
Paul Nasilowski
Credential
M.D
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
Practice location
1634 W Polk St, Chicago, IL 60612
Phone
(312) 829-4224
Enumerated
Sep 16, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest geriatric medicine (internal medicine) physician records → All 179 in Illinois → Look up another NPI →

Also registered at 1634 W Polk St

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

  1. Fakhruddin Adamji, M.D.Internal Medicine Physician1275658973
  2. Arsenio Agngarayngay, M.D.Internal Medicine Physician1902925977
  3. Ilina Andreeva, M.D.Internal Medicine Physician1295815058
  4. Agnieszka Bankowska-Brukasz, M.D.Internal Medicine Physician1891807483
  5. Robert Bilinski, M.D.Family Medicine Physician1538269717
  6. Linda Bityou, O.D.Optometrist1831306042

Verify Paul Nasilowski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck 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

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75% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024

1,042 Medicare Part D claims for 98 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.

  1. Paul Nasilowski1,042
  2. Specialty average4,246

Most prescribed

  1. Atorvastatin Calcium115 claims
  2. Amlodipine Besylate69 claims
  3. Metformin Hcl69 claims
  4. Lisinopril58 claims
  5. Metoprolol Succinate57 claims
  6. Lisinopril-Hydrochlorothiazide42 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.

Industry payments in 2024: $155.89

5 payments; by number, the most common kind was food and beverage; the largest payer was Shield Therapeutics Inc. The 1,004 providers of this specialty with any payment received $1,720.82 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Paul Nasilowski$155.89
  2. Specialty average$1,720.82

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

Paul Nasilowski among 179 geriatric medicine (internal medicine) physician records in Illinois

Paul Nasilowski, M.D is one of 179 geriatric medicine (internal medicine) physician records with a practice address in Illinois. 71% 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, 40% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 42% of these records are
  • Record last updated2007 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in Illinois

There are 179 geriatric medicine (internal medicine) physician records in Illinois.

All 179 in Illinois → Every provider in Chicago → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Fidel Castillo Diaz, MDChicago, IL 606121689667347
  2. Katya Cruz Madrid, M.DChicago, IL 606121609037498
  3. Xinqi Dong, M.D.Chicago, IL 606121861440224
  4. Martin Gorbien, M.D.Chicago, IL 606121477502714
  5. Nivedita Gunturi, MBBSChicago, IL 606121912240805
  6. Maria Hansberry, M.D.Chicago, IL 606121710936935
  7. Donald JurivichChicago, IL 606121184737009
  8. Snigdha Kola, M.DChicago, IL 606121659621837

Common questions

What is Paul Nasilowski, M.D's NPI number?

Paul Nasilowski, M.D's National Provider Identifier (NPI) is 1386740363, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Paul Nasilowski, M.D located?

The NPPES record lists a practice address at 1634 W Polk St, Chicago, IL, 60612. Phone: (312) 829-4224. Providers update this record themselves, so call before visiting.

How can I verify Paul Nasilowski, M.D's license?

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 Paul Nasilowski, M.D prescribe under Medicare Part D?

In 2024, Paul Nasilowski, M.D had 1,042 Medicare Part D claims for 98 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.