Quick answers
- Does Iwan Nyotowidjojo accept Medicare assignment?
- Yes. Medicare's clinician data says Iwan Nyotowidjojo 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 Iwan Nyotowidjojo see?
- In 2024, CMS data shows 78 Original Medicare patients and 221 services for Iwan Nyotowidjojo. This counts Original Medicare only and measures volume, not quality.
- What is Iwan Nyotowidjojo's NPI number?
- 1578976270. 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 Iwan Nyotowidjojo, 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 | 78 |
|---|---|
| Services billed to Medicare | 221 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)42 services
- Insertion of needle into vein for collection of blood sample (36415)39 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)29 services
- Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)20 services
- Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)17 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 pressure62%
- Diabetes38%
- Arthritis36%
- Ischemic heart disease22%
- Anxiety22%
Practice locations
Addresses where Iwan Nyotowidjojo is enrolled with Medicare (CMS data updated October 2, 2026).
- 13152 Newport AveTustin, CA 92780 (714) 263‑8600
- 501 S Idaho StLa Habra, CA 90631
Group practices
Medicare enrollment lists Iwan Nyotowidjojo as a member of this group (CMS data updated October 2, 2026).
- Friends of Family Health Center12 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Tustin
Clinicians with the same Medicare primary specialty in Tustin, CA — not a recommendation.
Other clinicians in Friends of Family Health Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Vermont College Of Medicine |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578976270 |
| 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
- 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