NPPES file of Aug 9, 2026

Ahmareen H. Khan, M.D.

Pulmonary Disease Physician · Saint Charles, MO

Ahmareen H. Khan, M.D. is a pulmonary disease physician with a practice address in Saint Charles, Missouri, and NPI 1669449591, issued on Feb 28, 2006. Check the license (Missouri 108033, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; 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
1669449591
Name
Ahmareen H. Khan
Credential
M.D.
Primary taxonomy
Pulmonary Disease Physician 207RP1001X
License number
108033 MO
Self-reported in NPPES; status is on the state search
Practice location
400 1St Capitol Dr, Saint Charles, MO 63301
Phone
(636) 669-0300
Enumerated
Feb 28, 2006
Record last updated
Feb 2, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(636) 669-0301
Medicaid ID
204972905 MO
Medicare enrollment
Enrolled (PECOS I20040608000239); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest pulmonary disease physician records → All 332 in Missouri → Look up another NPI →

Also registered at 400 1St Capitol Dr

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

  1. Martin Altman, M.D.Gastroenterology Physician1437110491
  2. Kimberly Cockrell, NPFamily Nurse Practitioner1649648890
  3. Christina Gaut, FNPFamily Nurse Practitioner1063091387
  4. Shannon Layton, P.T.Physical Therapist1043326812
  5. Charles Linsenmeyer, M.D.Orthopaedic Surgery Physician1477556405
  6. Marin Marcu, M.D.Gastroenterology Physician1295795722

Verify Ahmareen H. Khan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 108033    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 Missouri license search

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2.7 times the Medicare Part D claims of the average pulmonary disease physician in 2024

3,797 Medicare Part D claims for 564 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 63% of claims.

  1. Ahmareen Khan3,797
  2. Specialty average1,425

Most prescribed

  1. Trelegy Ellipta1,071 claims
  2. Albuterol Sulfate Hfa678 claims
  3. Montelukast Sodium431 claims
  4. Arnuity Ellipta206 claims
  5. Breo Ellipta139 claims
  6. Fluticasone Propionate112 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 2 group practices

  1. Aging Well Health Care, LLCSaint Louis, MO
  2. Ssm Medical Group IncLake St Louis, MO

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

Ahmareen H. Khan among 332 pulmonary disease physician records in Missouri

Ahmareen H. Khan, M.D. is one of 332 pulmonary disease physician records with a practice address in Missouri. 85% 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 13% of them.

  • NPI issued2006 · 13% of these records are older, 50% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1989 · median 2003 among the 246 with a school on file
  • Record last updated2015 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pulmonary Disease Physician providers in Missouri

There are 332 pulmonary disease physician records in Missouri.

All 332 in Missouri → Every provider in Saint Charles → Pulmonary Disease Physician nationwide →

The 8 pulmonary disease physician records with the nearest ZIP codes

  1. Frank Calandrino, M.D.Saint Charles, MO 633011356394498
  2. Mohsin Ehsan, M.DSaint Charles, MO 633011265627210
  3. William Schnarr, MDSaint Charles, MO 633011982643185
  4. Thomas Siler, MDSaint Charles, MO 633011881633931
  5. Alan Brook, M.D.Saint Peters, MO 633761316938863
  6. Mark Wald, M.D.Saint Peters, MO 633761194716688
  7. Brooke Colbert, M.D.Wentzville, MO 633851922295765
  8. Manojpal Dahuja, MDWentzville, MO 633851518962240

Common questions

What is Ahmareen H. Khan, M.D.'s NPI number?

Ahmareen H. Khan, M.D.'s National Provider Identifier (NPI) is 1669449591, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ahmareen H. Khan, M.D. located?

The NPPES record lists a practice address at 400 1St Capitol Dr, Saint Charles, MO, 63301. Phone: (636) 669-0300. Providers update this record themselves, so call before visiting.

How can I verify Ahmareen H. Khan, M.D.'s license?

NPPES lists Missouri license number 108033, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Ahmareen H. Khan, M.D. prescribe under Medicare Part D?

In 2024, Ahmareen H. Khan, M.D. had 3,797 Medicare Part D claims for 564 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.