Charles A. Longdon, D.O.
Emergency Medicine Physician · Huntley, IL
Charles A. Longdon, D.O. is an emergency medicine physician with a practice address in Huntley, Illinois, and NPI 1770512170, issued on Jun 30, 2006. Check the license (Illinois 036109417, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Charles A. Longdon
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 036109417 IL
44365-021 WI
Self-reported in NPPES; status is on the state search - Practice location
- 10400 Haligus RD, Huntley, IL 60142
- Phone
- (224) 654-0100
- Enumerated
- Jun 30, 2006
- Record last updated
- Jan 12, 2023
- Fax
- (224) 654-0105
- Medicaid ID
- 43498200 WI
- Medicare enrollment
- Enrolled (PECOS I20140527000349); accepts Medicare assignment
- Medical or professional school
- Western University Of Health Sciences College Of Dental Med, 1998
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 10400 Haligus RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Megan Carey, MS, RD, LDNRegistered Dietitian1578958187
- Firaz ChaudhryHospitalist Physician1588195531
- Stuart Cohen, MDAnesthesiology Physician1043261449
- Andrew Diaz, DOInternal Medicine Physician1255951786
Verify Charles A. Longdon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036109417Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average emergency medicine physician in 2024
228 Medicare Part D claims for 175 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 48 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen40 claims
- Cephalexin30 claims
- Prednisone24 claims
- Ondansetron Odt16 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.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $90.02
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationHuntley, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles A. Longdon among 3,291 emergency medicine physician records in Illinois
Charles A. Longdon, D.O. is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 68% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1998 · median 2012 among the 1,867 with a school on file
- Record last updated2023 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 emergency medicine physician records list a practice address in Huntley
They are 9 of the 372 NPPES records with a practice address in Huntley, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Huntley → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Heather Eslinger, MDHuntley, IL 601421326506080
- Abdel Noureldin, MDHuntley, IL 601421134172943
- Hemant Patel, MDHuntley, IL 601421659329324
- Nikita PatelHuntley, IL 601421275037392
- Christopher Ring, MDHuntley, IL 601421639526320
- David RuehlmannHuntley, IL 601421376112474
- Al Sarraj, MDHuntley, IL 601421073538880
- Spencer Suppes, DOHuntley, IL 601421144842279
Common questions
What is Charles A. Longdon, D.O.'s NPI number?
Charles A. Longdon, D.O.'s National Provider Identifier (NPI) is 1770512170, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles A. Longdon, D.O. located?
The NPPES record lists a practice address at 10400 Haligus RD, Huntley, IL, 60142. Phone: (224) 654-0100. Providers update this record themselves, so call before visiting.
How can I verify Charles A. Longdon, D.O.'s license?
NPPES lists Illinois license number 036109417, 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 Charles A. Longdon, D.O. prescribe under Medicare Part D?
In 2024, Charles A. Longdon, D.O. had 228 Medicare Part D claims for 175 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Charles A. Longdon, D.O.'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.