NPPES file of Aug 9, 2026

Natalie Kostinsky, M.D.

Family Medicine Physician · Crystal Lake, IL

Natalie Kostinsky, M.D. is a family medicine physician with a practice address in Crystal Lake, Illinois, and NPI 1205835881, issued on Jul 18, 2005. Check the license (Illinois 036093665, 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
1205835881
Name
Natalie Kostinsky
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
036093665 IL
Self-reported in NPPES; status is on the state search
Practice location
360 Station Dr, Crystal Lake, IL 60014
Phone
(815) 338-6600
Enumerated
Jul 18, 2005
Record last updated
Jan 9, 2025
Fax
(815) 455-8044
Medicaid IDs
036093665 IL
0360936654 IL
Medicare enrollment
Enrolled (PECOS I20041028000330); 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 360 Station Dr

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

  1. Muhammad Ali, M.D.Family Medicine Physician1932201712
  2. Maria Avina, RNDiabetes Educator Registered Nurse1013624386
  3. Randi Barbon, RN, CDEDiabetes Educator Registered Nurse1619205036
  4. Susan Bigham, CNPFamily Nurse Practitioner1518383264
  5. Jason Carman, DNPFamily Nurse Practitioner1174522825
  6. Jennifer Garrels, FNP-BC,RN,RDFamily Nurse Practitioner1801351648

Verify Natalie Kostinsky 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 036093665
    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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81% fewer Medicare Part D claims than the average family medicine physician in 2024

679 Medicare Part D claims for 460 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Natalie Kostinsky679
  2. Specialty average3,544

Most prescribed

  1. Prednisone148 claims
  2. Azithromycin113 claims
  3. Ciprofloxacin Hcl46 claims
  4. Amoxicillin-Clavulanate Potass45 claims
  5. Amoxicillin36 claims
  6. Cephalexin35 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 MIPS final score for 2023 (Medicare payment program): 94.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score82.6
  2. Costnot scored (reweighted)
  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; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $81.49

1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Natalie Kostinsky$81.49
  2. Specialty average$902.55

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

Bills Medicare through 4 group practices

  1. Advocate Health And Hospitals CorporationSouth Elgin, IL
  2. Cepamerica Illinois LLPElgin, IL
  3. Lake County Acute Care LLPGurnee, IL
  4. Northwestern Medical Faculty FoundationHuntley, IL

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

Natalie Kostinsky among 6,215 family medicine physician records in Illinois

Natalie Kostinsky, 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 91% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1973 · median 2006 among the 3,714 with a school on file
  • Record last updated2025 · 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).

24 family medicine physician records list a practice address in Crystal Lake

They are 24 of the 1,442 NPPES records with a practice address in Crystal Lake, and 6,215 family medicine physician records in Illinois.

The 8 family medicine physician records with the nearest ZIP codes

  1. Muhammad Ali, M.D.Crystal Lake, IL 600141932201712
  2. John Balocki, DOCrystal Lake, IL 600141801856117
  3. Moriah Bang, D.O.Crystal Lake, IL 600141750393310
  4. Jamie Gancayco, MDCrystal Lake, IL 600141669470431
  5. Marina Gladson, MDCrystal Lake, IL 600141588751366
  6. Marilyn Lacrosse, M.D.Crystal Lake, IL 600141255376885
  7. Michael Lesser, MDCrystal Lake, IL 600141760593032
  8. Yanbing Li, M.D.Crystal Lake, IL 600141104843739

Common questions

What is Natalie Kostinsky, M.D.'s NPI number?

Natalie Kostinsky, M.D.'s National Provider Identifier (NPI) is 1205835881, issued on Jul 18, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Natalie Kostinsky, M.D. located?

The NPPES record lists a practice address at 360 Station Dr, Crystal Lake, IL, 60014. Phone: (815) 338-6600. Providers update this record themselves, so call before visiting.

How can I verify Natalie Kostinsky, M.D.'s license?

NPPES lists Illinois license number 036093665, 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 Natalie Kostinsky, M.D. prescribe under Medicare Part D?

In 2024, Natalie Kostinsky, M.D. had 679 Medicare Part D claims for 460 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

What is Natalie Kostinsky, M.D.'s MIPS final score?

The 2023 MIPS final score is 94.1 of 100. 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.