Patan Gultawatvichai, MD

Medicare activity in 2024

Official CMS public-use data for Patan Gultawatvichai, 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. Injection, iron sucrose, 1 mg (J1756)8,700 services
2. Injection, infliximab, excludes biosimilar, 10 mg (J1745)1,470 services
3. Injection, dexamethasone sodium phosphate, 1 mg (J1100)252 services
4. Injection of additional new drug or substance into vein (96375)120 services
5. Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)115 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 cholesterol75%
• High blood pressure72%
• Arthritis48%
• Chronic kidney disease39%
• Diabetes34%
• Ischemic heart disease32%

Hospitals where Patan Gultawatvichai works

Medicare's Facility Affiliation Data lists Patan Gultawatvichai 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.

• Legacy Meridian Park Medical CenterTualatin, OR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 380089
• Mercy Medical CenterRoseburg, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380027
• UMass Memorial Healthalliance HospitalsLeominster, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220001

Practice locations

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

• 9495 SW Locust St, Suite GPortland, OR 97223 (971) 314‑4522

Group practices

Medicare enrollment lists Patan Gultawatvichai as a member of this group (CMS data updated October 2, 2026).

• Oncology Institute Or a Professional Corporation3 clinicians in the group

Specialties

• Hematology/Oncologyprimary

Find other Hematology/Oncology doctors in Oregon →

Other hematologist-oncologists in Portland

Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.

• Rebecca Silbermann, MD
• Ashray Maniar, MD
• Ted Huang, MD
• Trisha E. Wong, MD
• Aleksandra A. McLeod, MD
• Megan T. Zinsky, MD
• Arpita P. Gandhi, MD
• Gabrielle Meyers, MD

All hematologist-oncologists in Portland →

Other clinicians in Oncology Institute Or a Professional Corporation

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

• Nattamol Hosiriluck, MD
• Mary E. Taylor, NP

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