Leonardo Tjahjono, MD

Medicare activity in 2024

Official CMS public-use data for Leonardo Tjahjono, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)265 services
2. Destruction of skin growth, 1-14 growths (17110)230 services
3. Destruction of precancer skin growth, 1 growth (17000)199 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)198 services
5. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)120 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 pressure71%
• Arthritis40%
• Diabetes31%
• Ischemic heart disease25%
• Chronic kidney disease19%

Hospitals where Leonardo Tjahjono works

Medicare's Facility Affiliation Data lists Leonardo Tjahjono 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.

• George Washington University HospitalWashington, DC · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 090001

Practice locations

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

• 900 23rd St NWWashington, DC 20037 (202) 715‑4000

Group practices

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

• Medical Faculty Associates, Inc672 clinicians in the group

Specialties

• Dermatologyprimary

Find other Dermatology doctors in District of Columbia →

Other dermatologists in Washington

Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.

• Rhett A. Kent, MD
• Cheryl M. Burgess, MD
• Sarika Snell, MD
• Julie Hancock, MD
• Vincenzo Giannelli, MD
• Ellen N. Pritchett, MD
• Alan N. Moshell, MD
• Jennifer Powers, MD

All dermatologists in Washington →

Other clinicians in Medical Faculty Associates, Inc

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

• Jose A. Lucar, MD
• Pamela L. Dinkelacker, NP
• Anna Woodall, MD
• Sumona Bhattacharya, MD
• Nicholette Towns, CNM
• Adila Mustafa, 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