Placeholder Photo for Tom S. Chang, MD

Dr. Tom Chang is an ophthalmologist in Pasadena. As an eye doctor, he diagnoses and treats diseases, injuries, or trauma of the eye such as glaucoma or cataracts.

Reviews of Dr. Chang
Dr. Chang

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of Dr. Chang

Retina Institute of California Medical Group  


Accepting New Patients?

Yes, Dr. Tom S. Chang is accepting new patients at this office.


Fax

(559) 733-7169


Address

800 Fairmount Avenue, 312, Pasadena, CA 91105

Office Details

Doctor Specialty Ophthalmology
Accepting New Patients? Yes
Practice Specialty Multi Specialty
Languages Spoken English

Retina Institute of California Medical Group  


Accepting New Patients?

Yes, Dr. Tom S. Chang is accepting new patients at this office.


Fax

(626) 577-2100


Address

100 E California Boulevard, Pasadena, CA 91105-3205

Office Details

Doctor Specialty Ophthalmology
Accepting New Patients? Yes
Languages Spoken English

Retina Institute of California Medical Group  


Accepting New Patients?

Yes, Dr. Tom S. Chang is accepting new patients at this office.


Phone


Address

3545 Wilshire Boulevard, Suite 214, Los Angeles, CA 90010-2354

Office Details

Doctor Specialty Ophthalmology
Accepting New Patients? Yes
Languages Spoken English

Retina Institute of California Medical Group  


Accepting New Patients?

Yes, Dr. Tom S. Chang is accepting new patients at this office.


Phone


Address

7407 N Cedar Avenue, Suite 103, Fresno, CA 93720-3839

Office Details

Doctor Specialty Ophthalmology
Accepting New Patients? Yes
Languages Spoken English

Retina Institute of California Medical Group  


Accepting New Patients?

Yes, Dr. Tom S. Chang is accepting new patients at this office.


Fax

(661) 663-8688


Address

9500 Stockdale Highway, Suite 108, Bakersfield, CA 93311-3621

Office Details

Doctor Specialty Ophthalmology
Accepting New Patients? Yes
Languages Spoken English

Insurance Accepted  


  • Medicare

About Dr. Chang
Dr. Chang

Bio


Dr. Tom Chang graduated from Other in 1988.

Dr. Chang has five offices in California where he specializes in Ophthalmology.

Dr. Chang works with twenty-three doctors including Dr. John Gunn and Dr. Joshua Morrison-reyes.

Specialty


Education & Training  


Medical School

  • Other
    MD • 1988


Languages Spoken  


  • English

Dr. Chang's Medicare Fee‑for‑Service Data (2014)  


Please Note: The information displayed below is sourced from the 2014 Medicare Physician and Other Supplier National Provider Identifier (NPI) Aggregate Report. It's important to remember that the statistics below are not inclusive of all patients treated by Dr. Chang, but only those who participate in Medicare.

  Overview
  • Doctor participates in Medicare?: Yes 
  • Number of HCPCS Codes: 38 
  • Number of Services: 12387 
  • Medical Suppress Indicator:  
  • Number of HCPCS Associated With Medical Services: 34 
  • Number of Medical Services: 11245 
  • Number of Medicare Patients with Medical Services: 906 
  Medicare Patient Demographics
  • Total Number of Medicare Patients: 906 
  • Average Age of Medicare Patients: 77 
  • Number of Patients Under Age 65: 47 
  • Number of Patients Age 65 to 74: 338 
  • Number of Patients Age 75 to 84: 315 
  • Number of Patients Over Age 84: 206 
  • Number of Female Patients : 523 
  • Number of Male Patients: 383 
  • Number of Non-Hispanic White Patients: 602 
  • Number of Black or African American Patients: 19 
  • Number of Asian Pacific Islander Patients: 135 
  • Number of Hispanic Patients: 117 
  • Number of American Indian/Alaska Native Patients: 0 
  • Number of Patients with Race Not Elsewhere Classified: 33 
  • Number of Patients with Medicare Only Entitlement: 658 
  • Number of Patients with Medicare & Medicaid Entitlement: 248 
  Medicare Patient Condition Demographics
  • Percent of Patients with Atrial Fibrillation: 10% 
  • Percent of Patients with Alzheimer’s Disease or Dementia: 10% 
  • Percent of Patients with Asthma: 5% 
  • Percent of Patients with Cancer: 10% 
  • Percent of Patients with Heart Failure: 18% 
  • Percent of Patients with Chronic Kidney Disease: 26% 
  • Percent of Patients with Chronic Obstructive Pulmonary Disease: 13% 
  • Percent of Patients with Depression: 15% 
  • Percent of Patients with Diabetes: 42% 
  • Percent of Patients with Hyperlipidemia: 62% 
  • Percent of Patients with Hypertension (High Blood Pressure): 70% 
  • Percent of Patients with Ischemic Heart Disease: 41% 
  • Percent of Patients with Osteoporosis: 14% 
  • Percent of Patients with Rheumatoid Arthritis / Osteoarthritis: 45% 
  • Percent of Patients with Schizophrenia / Other Psychotic Disorders: 2% 
  • Percent of Patients with Stroke: 4% 
  Medicare Payments Data
  • Total Submitted Charge Amount: $3,027,013.00 
  • Total Medicare Allowed Amount: $1,528,685.32 
  • Total Medicare Payment Amount: $1,161,424.79 
  • Total Medicare Standardized Payment Amount: $1,083,190.66 
  • Total Medical Submitted Charge Amount: $2,705,783.00 
  • Total Medical Medicare Allowed Amount: $1,352,087.65 
  • Total Medical Medicare Payment Amount: $1,023,671.62 
  • Total Medical Medicare Standardized Payment Amount: $945,437.49 
  Medicare Prescription Drug Data
  • Drug Suppress Indicator: n/a 
  • Number of HCPCS Associated With Drug Services: 4 
  • Number of Drug Services: 1142 
  • Number of Medicare Beneficiaries With Drug Services: 226 
  • Total Drug Submitted Charge Amount: $321,230.00 
  • Total Drug Medicare Allowed Amount: $176,597.67 
  • Total Drug Medicare Payment Amount: $137,753.17 
  • Total Drug Medicare Standardized Payment Amount: $137,753.17 

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