Physician Profile
Alvin Chang, M.D.
Unclaimed ProfileAbout Dr. Chang
Based in Tustin, CA, Alvin Chang, M.D. is listed in the NPI registry under geriatric medicine. Alvin graduated from University of California, Geffen School of Medicine in 1994. Medicare claims data shows Alvin provided 2,391 services to 974 patients. The services billed most often include residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes, subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (714) 352-5800
- Email not available
Practice Locations
1101 BRYAN AVE SUITE E
Tustin, CA 92780
Conditions Commonly Evaluated or Treated
Within Geriatric 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
- Alzheimer's disease
- Dementia
- Frequent falls
- Managing multiple medications
- Memory loss
- Osteoporosis
Balance & Mobility
- Senior Dizziness
- Walking Problems
Blood Health
- Senior Anemia
Bones & Joints
- Broken Hip Recovery
- Osteoarthritis
Brain & Nerves
- Delirium
- Dementia with behavioral symptoms
- Essential tremor
- Normal Pressure Hydrocephalus
- Parkinson's disease
Cardiovascular
- High blood pressure
- Orthostatic hypotension
- Poor Circulation and Swollen Legs
Cognitive Health
- Dementia Wandering
- Mild cognitive impairment
Digestive
- Constipation
- Fecal incontinence
- Poor Appetite In Seniors
- Swallowing difficulties
Ears & Hearing
- Hearing loss
General Health
- Dehydration In Seniors
- Elderly Frailty
- Senior Malnutrition
- Unexplained Weight Loss
Hormone Health
- Underactive Thyroid In Seniors
Infections
- Shingles
Joints & Pain
- Gout
- Polymyalgia rheumatica
Lung Health
- Severe Pneumonia
Men's Health
- Enlarged prostate
Mental Health
- Caregiver burnout
- Restlessness And Agitation
- Senior Anxiety
- Senior Depression
Mobility
- Balance Problems and Fall Risk
- Muscle Loss And Weakness
Oral Health
- Dry mouth
Pain
- Chronic Pain In Seniors
Skin & Wounds
- Bedsores
- Diabetic Foot Sores
- Non-Healing Wounds
- Thinning and Tearing Skin
Sleep
- Senior Insomnia
Spine & Pain
- Spinal stenosis
Urinary & Bladder
- Recurrent urinary tract infections
- Urinary incontinence in women
Urinary Health
- Waking Up to Pee
Procedures & services
Most searched procedures
- Comprehensive geriatric assessment
- Fall risk assessment
- Memory testing
Bone Health
- Osteoporosis Medication Consultation
Cardiovascular
- Orthostatic Blood Pressure Check
Care Placement
- Nursing Home Placement Assessment
Caregiver Support
- Dementia Caregiver Training
Chronic Disease Management
- Senior Diabetes Target Adjustment
Cognitive Health
- Dementia Wandering Safety Plan
Digestive
- Constipation And Bowel Management
- Swallowing safety evaluation coordination
Ear Care
- Earwax removal
End-of-Life Planning
- POLST Or DNR Consultation
Foot Care
- Routine Senior Foot And Nail Care
General Geriatric Care
- Senior Telehealth Consultation
General Health
- Outpatient IV Hydration
Home Care
- Home Health Certification
- In-Home Care Needs Assessment
Legal & Cognitive
- Mental Competency Evaluation
Medication Management
- Deprescribing consultation
Mental Health
- Agitation And Behavior Management Planning
- Senior Depression Screening
Mobility
- Gait analysis
Mobility & Equipment
- Walker Or Wheelchair Prescription
Nutrition
- High-Calorie Senior Nutrition Plan
- Senior Nutrition Assessment
Outpatient Care
- In-Home Doctor Visit
- Post-hospital transitional care
Pain & Injections
- Joint injection or aspiration
Pain Management
- Safe Senior Pain Management Plan
Palliative & Hospice
- Comfort care transition
- Hospice Eligibility Evaluation
Patient Safety
- Elder Abuse And Neglect Assessment
Planning & Support
- Advance Care Planning
- Assisted Living Placement Assessment
- Caregiver Counseling
- Long-Term Care Insurance Evaluation
- Medical Power Of Attorney Consultation
Preventive Care
- Chronic Illness Checkup
- Medicare annual wellness visit
- Shingles And Senior Vaccinations
Respiratory
- Oxygen Therapy Evaluation
Safety & Daily Function
- Daily Living Activities Evaluation
- Home Safety Evaluation
- Senior Driving Safety Assessment
Sensory Health
- Hearing Aid Fitting Referral
Surgical Clearance
- Senior Pre-Surgery Clearance
Urinary & Bladder
- Postvoid residual measurement
- Urinary Catheter Change And Care
Urinary Health
- Scheduled Toileting Program
Wound Care
- Surgical Wound Care
Procedures Most Often Billed to Medicare
2,391 services · 974 patients · 13 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99348 |
916 | More than most peers in Geriatric Medicine |
| Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more | Office visit | 99308 |
653 | More often than most peers in Geriatric Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
250 | More often than most peers in Geriatric Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
137 | More often than most peers in Geriatric Medicine |
| Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99349 |
119 | More often than most peers in Geriatric Medicine |
| Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99309 |
91 | As often as other peers in Geriatric Medicine |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
49 | As often as other peers in Geriatric Medicine |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
43 | More often than most peers in Geriatric Medicine |
| Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more | Office visit | 99308 |
40 | More often than most peers in Geriatric Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
34 | Less often than most peers in Geriatric 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.
Related specialists at this location 3
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 — 16 related providers in 2 groups
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1994 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Alvin Chang specialize in?
Alvin Chang is a geriatrician in Tustin, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Geriatric Medicine”.
NPI registry
Where is Alvin Chang located?
Alvin Chang is listed at 1101 Bryan Ave Suite E, Tustin, CA 92780. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Alvin Chang's phone number?
The number on file is (714) 352-5800. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Alvin Chang?
Alvin Chang's National Provider Identifier is 1396857181. 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 Alvin Chang train?
Alvin Chang attended University of California, Geffen School of Medicine, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Alvin Chang have?
Alvin Chang has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What does Alvin Chang do most often?
According to Medicare billing data, Alvin Chang the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Alvin Chang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Alvin Chang. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.