NPPES file of Aug 9, 2026

Mahmood R. Khan, M.D.

Internal Medicine Physician · Plano, TX

Mahmood R. Khan, M.D. is an internal medicine physician with a practice address in Plano, Texas, and NPI 1891741120, issued on May 26, 2006. Check the license (Texas K1851, as entered in NPPES) on the Texas Medical Board; 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
1891741120
Name
Mahmood R. Khan
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
K1851 TX
Self-reported in NPPES; status is on the state search
Practice location
3900 W 15TH St, Plano, TX 75075
Phone
(972) 596-2911
Enumerated
May 26, 2006
Record last updated
Nov 6, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20031216000331); accepts Medicare assignment
Medical or professional school
R Franklin University Of Med & Sci/Chicago Medical School, 1990
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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Also registered at 3900 W 15TH St

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

  1. William Boothe, MDOphthalmology Physician1710948385
  2. Ramarao Lankipalli, MD, MRCP (UK), FACCCardiovascular Disease Physician1336121193
  3. Sheng-Po Lu, DDSGeneral Practice Dentistry1235256587
  4. William Mulchin, M.D.Urology Physician1639126568
  5. Gita Rafiei, D.D.S.General Practice Dentistry1891810263
  6. Lynn Silver, PHDSpeech-Language Pathologist1972584811

Verify Mahmood R. Khan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license K1851    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 Texas license search

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4% fewer Medicare Part D claims than the average internal medicine physician in 2024

3,062 Medicare Part D claims for 243 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.

  1. Mahmood Khan3,062
  2. Specialty average3,176

Most prescribed

  1. Amlodipine Besylate210 claims
  2. Losartan Potassium183 claims
  3. Atorvastatin Calcium181 claims
  4. Levothyroxine Sodium169 claims
  5. Hydrochlorothiazide140 claims
  6. Lisinopril106 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.

205 internal medicine physician records list a practice address in Plano

They are 205 of the 7,271 NPPES records with a practice address in Plano, and 9,175 internal medicine physician records in Texas.

All 205 in Plano → All 9,175 in Texas → Every provider in Plano →

Other internal medicine physician records in Texas

  1. Muhammad A. Sattar, MDDallas, TX1760465553
  2. Gayatri Aaluri, MDGalveston, TX1821928508
  3. Anunaya AashishDenton, TX1134246374
  4. Queenie Ann Abad, M.D.San Antonio, TX1174979785
  5. Fuad Abaleka, M.DLubbock, TX1861925596
  6. Carol Abalihi, M.D.El Paso, TX1326136243
  7. Oliverio Abarca Guzman, MDHarlingen, TX1346972940
  8. Obinna Abaribe, M.DMansfield, TX1457704355
  9. Enyinnaya Abarikwu, MDTyler, TX1174788178
  10. Sulaiman Abawi, D.O.Frisco, TX1780845255

Common questions

What is Mahmood R. Khan, M.D.'s NPI number?

Mahmood R. Khan, M.D.'s National Provider Identifier (NPI) is 1891741120, issued on May 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mahmood R. Khan, M.D. located?

The NPPES record lists a practice address at 3900 W 15TH St, Plano, TX, 75075. Phone: (972) 596-2911. Providers update this record themselves, so call before visiting.

How can I verify Mahmood R. Khan, M.D.'s license?

NPPES lists Texas license number K1851, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mahmood R. Khan, M.D. prescribe under Medicare Part D?

In 2024, Mahmood R. Khan, M.D. had 3,062 Medicare Part D claims for 243 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.