Quick answers
- Does Lynn M. Preston accept Medicare assignment?
- Yes. Medicare's clinician data says Lynn M. Preston 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 Lynn M. Preston see?
- In 2024, CMS data shows 2,267 Original Medicare patients and 5,609 services for Lynn M. Preston. This counts Original Medicare only and measures volume, not quality.
- What is Lynn M. Preston's NPI number?
- 1790708543. 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 Lynn M. Preston, 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 | 2,267 |
|---|---|
| Services billed to Medicare | 5,609 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)2,854 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)868 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)779 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)309 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)146 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 cholesterol73%
- Arthritis50%
- Ischemic heart disease42%
- Diabetes40%
- Chronic kidney disease32%
Hospitals where Lynn M. Preston works
Medicare's Facility Affiliation Data lists Lynn M. Preston at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- McAlester Regional Health CenterMcAlester, OK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 370034
- O U Medical CenterOklahoma City, OK · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 370093
- Oklahoma State University Medical CenterTulsa, OK · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 370078
- Saint Francis Hospital MuskogeeMuskogee, OK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 370025
- Saint Francis Hospital, IncTulsa, OK · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 370091
Practice locations
Addresses where Lynn M. Preston is enrolled with Medicare (CMS data updated October 2, 2026).
- 1401 E Van Buren AveMcAlester, OK 74501 (918) 426‑0240
- 6600 S Yale Ave, Suite 1400Tulsa, OK 74136 (918) 488‑6000
Group practices
Medicare enrollment lists Lynn M. Preston as a member of this group (CMS data updated October 2, 2026).
- Warren Clinic Inc883 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Oklahoma →
Other cardiologists in Oklahoma
Clinicians with the same Medicare primary specialty in Oklahoma — not a recommendation.
Other clinicians in Warren Clinic Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790708543 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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