Mark Lowenthal, M.D.
Allergy Physician · Orland Park, IL
Mark Lowenthal, M.D. is an allergy physician with a practice address in Orland Park, Illinois, and NPI 1407830136, issued on Dec 6, 2005. Check the license (Illinois 36080077, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mark Lowenthal
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- 36080077 IL
Self-reported in NPPES; status is on the state search - Practice location
- 10733 W. 165TH St., Orland Park, IL 60467
- Phone
- (708) 957-7468
- Enumerated
- Dec 6, 2005
- Record last updated
- Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (708) 957-7471
- Medicaid ID
- 036080077 IL
- Medicare enrollment
- Enrolled (PECOS I20050406000400); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1987
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 56 in Illinois → Look up another NPI →
Also registered at 10733 W. 165TH St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Timothy Brown, M.D.Allergy Physician1366425175
- Richard Fitzsimons, M.D.Allergy Physician1104809227
- Michael Flais, M.D.Allergy Physician1003899808
- James Hunter, M.D.Allergy Physician1780667592
- Saroj Khurana, M.D.Allergy Physician1881677946
- Sai Nimmagadda, M.D.Allergy Physician1902889041
Verify Mark Lowenthal 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 36080077Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% more Medicare Part D claims than the average allergy physician in 2024
1,231 Medicare Part D claims for 207 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Montelukast Sodium234 claims
- Arnuity Ellipta120 claims
- Azelastine Hcl90 claims
- Albuterol Sulfate Hfa75 claims
- Ipratropium Bromide67 claims
- Fluticasone Propionate Hfa55 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
- Associated Allergists And Asthma Specialists, LtdHighland Park, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Lowenthal among 56 allergy physician records in Illinois
Mark Lowenthal, M.D. is one of 56 allergy 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 70% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 34% of these records are
- Graduated1987 · median 1997 among the 19 with a school on file
- Record last updated2021 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in Illinois
There are 56 allergy physician records in Illinois.
All 56 in Illinois → Every provider in Orland Park → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Timothy Brown, M.D.Orland Park, IL 604671366425175
- Umapathi Cattamanchi, MDOrland Park, IL 604671316937790
- Richard Fitzsimons, M.D.Orland Park, IL 604671104809227
- Michael Flais, M.D.Orland Park, IL 604671003899808
- James Hunter, M.D.Orland Park, IL 604671780667592
- Saroj Khurana, M.D.Orland Park, IL 604671881677946
- Sai Nimmagadda, M.D.Orland Park, IL 604671902889041
- Alan Resnick, M.D.Orland Park, IL 604671548244825
Common questions
What is Mark Lowenthal, M.D.'s NPI number?
Mark Lowenthal, M.D.'s National Provider Identifier (NPI) is 1407830136, issued on Dec 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Lowenthal, M.D. located?
The NPPES record lists a practice address at 10733 W. 165TH St., Orland Park, IL, 60467. Phone: (708) 957-7468. Providers update this record themselves, so call before visiting.
How can I verify Mark Lowenthal, M.D.'s license?
NPPES lists Illinois license number 36080077, 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 Mark Lowenthal, M.D. prescribe under Medicare Part D?
In 2024, Mark Lowenthal, M.D. had 1,231 Medicare Part D claims for 207 beneficiaries; the average among allergy physician prescribers was 750. 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.
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.