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Endocrinologists who accept Medicare in McKinney, TX
CMS lists 8 clinicians in this specialty with a practice address in McKinney. Accept Medicare assignment (the Medicare-approved amount as full payment): 8. Offer telehealth: 5.
Typical amounts Medicare approves in ZIP 75071 (2024 Medicare rates, the latest CMS has published): a new-patient visit $126, of which you pay about $32; a follow-up visit $97, of which you pay about $24 — the 20% coinsurance after the yearly Part B deductible. Clinicians who don't accept assignment can charge up to 15% more; with a Medicare Advantage plan, your plan's copay applies instead.
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Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
Muhammad S. Siddiqui, MD
✓ Accepts Medicare assignmentMIPS score (2024): 88.2/100Graduated 2007MaleDrug and device company payments (2025): $30,371Marriam Ali, MD
✓ Accepts Medicare assignmentGraduated 2014 · Texas a & M University System, HSC, College of MedicineFemaleAnthony T. Chuang, DO
✓ Accepts Medicare assignmentGraduated 2011MaleDrug and device company payments (2025): $2,267Jane E. Lee, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2019FemaleOther offices in McKinney: 2Drug and device company payments (2025): $2,059Jennifer D. St. John, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2010 · Lake Erie College of Osteopathic Medicine, ErieFemaleOther offices in McKinney: 2Drug and device company payments (2025): $1,056Sana Ullah, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2001MaleDrug and device company payments (2025): $864Brian J. Welch, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2000 · University of Texas Southwestern Medical School at DallasMaleOther offices in McKinney: 1Drug and device company payments (2025): $2,098Vivienne Yoon, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2006 · University of Texas Medical Branch at GalvestonFemaleOther offices in McKinney: 2Drug and device company payments (2025): $2,101
Before you book
This list comes from Medicare's enrollment records, not from reviews. Call the office to confirm the clinician is taking new Medicare patients. With Original Medicare, a clinician who accepts assignment can only charge you the Medicare deductible and coinsurance; one who doesn't may charge up to 15% more than the Medicare-approved amount. If you have a Medicare Advantage plan, check that the clinician is in the plan's network.
The MIPS final score (0–100) comes from Medicare's Merit-based Incentive Payment System for 2024. It combines quality measures, cost, improvement activities and use of certified health records, and it sets a payment adjustment. Clinicians who report as a group share the group's score. It is not a patient rating, and many clinicians have no published score.
Payments from drug and medical device companies come from CMS Open Payments (2025 general payments: meals, travel, consulting and speaking fees, gifts and similar), summed for each clinician. Receiving payments is legal and common and does not mean a clinician did anything wrong.
Other specialists in McKinney
- Primary care doctors249
- Nurse practitioners286
- Cardiologists85
- Dermatologists13
- Orthopedic surgeons36
- Neurologists26
- Gastroenterologists19
- Ophthalmologists8
- Optometrists42
- Podiatrists15
- Urologists11
- Pulmonologists10
- Nephrologists40
- Rheumatologists6
- ENT doctors26
- Oncologists15
- Psychiatrists102
- Psychologists28
- Therapists and counselors105
- Physical therapists99
- Occupational therapists12
- Speech therapists8
- Audiologists20
- Chiropractors33
- Gynecologists32
- General surgeons31
- Vascular surgeons9
- Pain management doctors10
- Physiatrists15
- Dietitians7
- Neurosurgeons5
Other care in McKinney
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
Enrollment, addresses and scores are as reported to CMS and can change. This is not a list of in-network providers for any Medicare Advantage plan, and it is not medical advice. Source: CMS Provider Data Catalog — Doctors and Clinicians National Downloadable File, Clinician MIPS Performance 2024 and Facility Affiliation Data (released Oct 2, 2026).