Quick answers
- Does Najam H. Khan accept Medicare assignment?
- Yes. Medicare's clinician data says Najam H. Khan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Najam H. Khan see?
- In 2024, CMS data shows 183 Original Medicare patients and 4,956 services for Najam H. Khan. This counts Original Medicare only and measures volume, not quality.
- What is Najam H. Khan's NPI number?
- 1851315857. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Najam H. Khan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 183 |
|---|---|
| Services billed to Medicare | 4,956 |
| Different services or procedures | 68 |
| Participating Medicare provider | Yes |
| Average age of these patients | 80 |
Most frequent services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)1,001 services
- Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)438 services
- Insertion of needle into vein for collection of blood sample (36415)223 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)199 services
- Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)198 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease75%
- Diabetes63%
- Anxiety48%
- Arthritis44%
Practice locations
Addresses where Najam H. Khan is enrolled with Medicare (CMS data updated October 2, 2026).
- 5701 Virginia PkwyMcKinney, TX 75071 (214) 592‑0212
- 800 College PkwyLewisville, TX 75077 (972) 420‑8543
Group practices
Medicare enrollment lists Najam H. Khan as a member of this group (CMS data updated October 2, 2026).
- Legacy Healthcare Services Inc3,223 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in McKinney
Clinicians with the same Medicare primary specialty in McKinney, TX — not a recommendation.
Other clinicians in Legacy Healthcare Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1983 (43 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1851315857 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians