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Edit this profileAt a glance
- 2700 Grant St, Suite 200, Concord, CA 94520
About Dr. Chang
Anna R. Chang, M.D. is a healthcare provider in Concord, CA specializing in internal medicine. Anna trained at University of California, San Diego School of Medicine, graduating in 1998. Medicare claims data shows Anna provided 4,475 services to 1,137 patients. The services billed most often include injection, denosumab, 1 mg, diabetes outpatient self-management training services, individual, per 30 minutes, 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 1568402931.
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
- (925) 687-8860
- Email not available
Practice Locations
2700 GRANT ST SUITE 200
Concord, CA 94520
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
Cancer Prevention
Cancer risk
Environmental health
- Asbestos Exposure
- Contaminated drinking water exposure
- Heat exhaustion and heat stroke
- Radon gas exposure
- Tick bite and Lyme disease risk
- Toxic Mold Exposure
- Wildfire smoke and air pollution exposure
- Workplace Chemical Exposure
General wellness
Heart health
Infectious Disease
Infectious disease
Kidney health
Lifestyle & wellness
Lifestyle health
Longevity
Metabolic & Lifestyle
Occupational health
Occupational Health
Rashes & allergy
Sexual Health
Sexual health
Substance use
Travel health
Wellness and energy
Workplace health
Most searched conditions
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Addiction & habits
Cancer screening
Cancer Screening
Checkups & exams
Chronic illness
Diagnostics & screening
Environmental health
Fitness & body composition
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart & circulation
Heart health
Hospital-based procedures
Imaging referral
Immunizations
Infection & Microbiology Tests
- STI and STD Screening
- H. Pylori Breath Test
Lifestyle & Prevention
Longevity
Lower endoscopy
Lungs & Breathing
Metabolic & Weight
Metabolic health
Occupational health
Occupational Health
Office Procedures
Preventive and evaluation
- Preoperative medical clearance
- Medication management
- Post-hospital transitional care
Preventive imaging
Preventive screening
Routine Blood Tests
Screening & labs
Screening and diagnostic testing
- Blood pressure screening
- Cancer screening and prevention planning
- Diabetes and prediabetes screening
- EKG
- Spirometry
Screenings & Diagnostics
Travel Health
Travel medicine
Wellness
Wellness & Screening
Workplace health
Skin growths
Sleep
Most searched procedures
Bones & Joints
Brain and nerves
Digestive
- Endoscopy
Exams & Consultations
Lab tests
Minor procedures
Office procedures
Pain management
Preventive & Routine Care
Sexual health
Procedures Most Often Billed to Medicare
4,475 services · 1,137 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | Treatment | 95251 |
172 | More often than most peers in Internal Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
60 | As often as other peers in Internal Medicine |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
39 | Less often than most peers in Internal Medicine |
| Injection, denosumab, 1 mg | Drug given | J0897 |
2,221 | More often than most peers in Internal Medicine |
| Injection, zoledronic acid, 1 mg | Drug given | J3489 |
197 | More often than most peers in Internal Medicine |
| Diabetes outpatient self-management training services, individual, per 30 minutes | Billing code | G0108 |
706 | More 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 |
502 | More often than most peers in Internal Medicine |
| Hemoglobin a1c level | Lab test | 83036 |
193 | More often than most peers in Internal Medicine |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
170 | As often as other peers in Internal Medicine |
| Diabetes outpatient self-management training services, group session (2 or more), per 30 minutes | Billing code | G0109 |
131 | Too few peers to compare |
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 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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 Concord 5
Same specialty, same city.
Trained at University of California, San Diego School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1998 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Anna R. Chang's specialty?
Anna R. Chang is an internist in Concord, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where can I find Anna R. Chang?
Anna R. Chang is listed at 2700 Grant St Suite 200, Concord, CA 94520. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Anna R. Chang?
The number on file is (925) 687-8860. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Anna R. Chang?
Anna R. Chang's National Provider Identifier is 1568402931. 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
What is Anna R. Chang's education?
Anna R. Chang attended University of California, San Diego School of Medicine, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Anna R. Chang have?
Anna R. Chang has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What is Anna R. Chang known for?
According to Medicare billing data, Anna R. Chang provides treatments such as continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Anna R. Chang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Anna R. Chang. If this is you, claiming it is free.
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