Douglas A. Dennis Jr., MD

Medicare activity in 2024

Official CMS public-use data for Douglas A. Dennis Jr., 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, gelsyn-3, for intra-articular injection, 0.1 mg (J7328)7,560 services
2. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,748 services
3. Aspiration and/or injection of fluid from large joint (20610)642 services
4. Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose (J7323)562 services
5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)247 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).

• Arthritis75%
• High blood pressure72%
• High cholesterol68%
• Diabetes32%
• Depression22%
• Chronic kidney disease22%

Hospitals where Douglas A. Dennis Jr. works

Medicare's Facility Affiliation Data lists Douglas A. Dennis Jr. 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.

• Sutter Davis HospitalDavis, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050537
• Sutter Medical Center, SacramentoSacramento, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050108
• Sutter Solano Medical CenterVallejo, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050101

Practice locations

Addresses where Douglas A. Dennis Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 2702 Low CtFairfield, CA 94534 (707) 432‑2600
• 2720 Low CtFairfield, CA 94534 (707) 428‑2731
• 2800 L StSacramento, CA 95816

Group practices

Medicare enrollment lists Douglas A. Dennis Jr. as a member of this group (CMS data updated October 2, 2026).

• Sutter Valley Medical Foundation2,500 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in California →

Other orthopedic surgeons in Fairfield

Clinicians with the same Medicare primary specialty in Fairfield, CA — not a recommendation.

• John C. Kofoed, MD
• Navid M. Ziran, MD
• Leslie Olson, MD
• Tyag Patel, MD
• Jay D. Parkin, MD

All orthopedic surgeons in Fairfield →

Other clinicians in Sutter Valley Medical Foundation

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

• Hai Duong, MD
• Angela Tran, MD
• Steven Yang, DO
• You-Tan Yeh, MD
• Tal Vitaly Sraboyants, NP
• Jenan Gabi, 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