Timothy Zimmerman, MD

Medicare activity in 2024

Official CMS public-use data for Timothy Zimmerman, 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.

Most frequent services

1. Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg (J7325)1,152 services
2. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)604 services
3. Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)215 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)167 services
5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)130 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%
• Arthritis75%
• Ischemic heart disease33%
• Diabetes29%
• Chronic kidney disease29%

Hospitals where Timothy Zimmerman works

Medicare's Facility Affiliation Data lists Timothy Zimmerman 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.

• Mercy Hospital Fort SmithFort Smith, AR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 040062
• Mercy Hospital OzarkOzark, AR · Critical Access Hospital · Emergency services: listed by Medicare · CCN 041303

Practice locations

Addresses where Timothy Zimmerman is enrolled with Medicare (CMS data updated October 2, 2026).

• 1414 Hwy 71 NAlma, AR 72921 (479) 632‑0321
• 3501 We Knight DrFort Smith, AR 72903 (479) 709‑6700
• 3505 S 79th StFort Smith, AR 72903 (479) 709‑8686

Group practices

Medicare enrollment lists Timothy Zimmerman as a member of these groups (CMS data updated October 2, 2026).

• Mercy Clinic Fort Smith Communities372 clinicians in the group
• Fands Physical Therapy, Inc221 clinicians in the group

Specialties

• Internal Medicineprimary
• Sports Medicinealso

Find other Internal Medicine doctors in Arkansas →

Other internal medicine doctors in Alma

Clinicians with the same Medicare primary specialty in Alma, AR — not a recommendation.

• David R. Slay, MD
• Hubert M. Landers, MD
• Nathan H. Bennett, MD
• Margaret V. Cox, MD
• David B. Sills, MD
• Christopher S. Hardin, MD
• Caleb L. Guthrey, MD
• Michael C. Cloud, MD

All internal medicine doctors in Alma →

Other clinicians in Mercy Clinic Fort Smith Communities

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Carissa Ferguson, NP
• Varant Arzoumanian, MD
• Harsha Rudrappa, MD
• Stephen Lefler, MD
• Maria Altaf Majeed, MD
• Becky Yarborough, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians