Physician Profile
Iwan Nyotowidjojo, M.D.
Unclaimed ProfileAbout Dr. Nyotowidjojo
Iwan Nyotowidjojo, M.D. is a healthcare provider in Rancho Santa Margarita, CA specializing in internal medicine. Iwan trained at University of Vermont College of Medicine, graduating in 2014. According to Medicare claims data, Iwan cared for 113 Medicare patients across 147 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, insertion of needle into vein for collection of blood sample, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1578976270.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (949) 459-9968
- Email not available
Practice Locations
29472 AVENIDA DE LAS BANDERAS
Rancho Santa Margarita, CA 92688
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
- Acid reflux
- Fatty liver disease
- IBS
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
- Chronic kidney disease
- Enlarged prostate
Respiratory
Blood & Circulation
- Blood clots
Blood disorders
- Anemia
Brain & Nerves
Brain and nerves
- Vertigo
Cardiac and vascular
- AFib
Digestive
- Diverticulitis
Heart & Circulation
- Heart disease
Infections
- Impetigo
Kidney & Bladder
Lungs & Breathing
Mental Health
- Generalized anxiety disorder
- Insomnia and Sleep Problems
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
- EKG
- Spirometry
Bones & Joints
- Trigger Point Injections
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
- Endoscopy
Exams & Consultations
- Pre-Op Clearance Exam
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
- Urinalysis
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
- Ingrown toenail removal
- Suture removal
Office procedures
- Cryotherapy for skin lesions
- Earwax removal
- Incision and drainage of an abscess
- Skin biopsy
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
- Knee Joint Injection
Preventive & Routine Care
- Smoking cessation counseling
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
147 services · 113 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
39 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
42 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
29 | Less often than most peers in Internal Medicine |
| Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes | Office visit | 99458 |
20 | Less often than most peers in Internal Medicine |
| Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | Office visit | 99457 |
17 | Less often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 29 related providers in 4 groups
Other internists in Rancho Santa Margarita 5
Same specialty, same city.
Trained at University of Vermont College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2014 at University of Vermont College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Iwan Nyotowidjojo specialize in?
Iwan Nyotowidjojo is an internist in Rancho Santa Margarita, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where is Iwan Nyotowidjojo located?
Iwan Nyotowidjojo is listed at 29472 Avenida de Las Banderas, Rancho Santa Margarita, CA 92688. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Iwan Nyotowidjojo's phone number?
The number on file is (949) 459-9968. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Iwan Nyotowidjojo's NPI number?
Iwan Nyotowidjojo's National Provider Identifier is 1578976270. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Iwan Nyotowidjojo train?
Iwan Nyotowidjojo attended University of Vermont College of Medicine, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How long has Iwan Nyotowidjojo been practicing?
Iwan Nyotowidjojo has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What does Iwan Nyotowidjojo do most often?
According to Medicare billing data, Iwan Nyotowidjojo performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Iwan Nyotowidjojo confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Iwan Nyotowidjojo. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.