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Edit this profileAt a glance
- 110 S Paca St, 4N149, Baltimore, MD 21201
About Dr. Chang
Joy Chang, M.D. is a healthcare provider in Baltimore, MD specializing in addiction psychiatry. Joy trained at Wright State University Boonshoft School of Medicine, graduating in 2011. According to Medicare claims data, Joy cared for 149 Medicare patients across 604 services. The services billed most often include psychotherapy, 30 minutes, psychotherapy, 45 minutes, and psychotherapy, 1 hour. This provider record is associated with NPI 1154620540.
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
- (410) 328-1834
- Email not available
Practice Locations
110 S PACA ST 4N149
Baltimore, MD 21201
Conditions Commonly Evaluated or Treated
Within Psychiatry 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
Cognitive and adjustment
Eating, sleep, and somatic
Geriatric care
Mental Health
Neurodevelopmental and behavioral
Most searched conditions
Anxiety, trauma, and obsessive-compulsive
Mood disorders
Psychotic disorders
Substance-related and addictive
Addiction & Substance Use
Eating Disorders
Mood & Depression
Personality and dissociative
Sleep & Wakefulness
Procedures & services
Advanced treatment
Assessment
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Addiction care
Addiction Medicine
Assessments
Brain stimulation
Consultations
Diagnostics
Inpatient care
Interventional psychiatry
Psychotherapy
Sleep Medicine
Specialized care
Therapy
Therapy and care
Procedures Most Often Billed to Medicare
604 services · 149 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 30 minutes | Treatment | 90832 |
215 | Too few peers to compare |
| Psychotherapy, 45 minutes | Treatment | 90834 |
137 | Too few peers to compare |
| Psychotherapy, 1 hour | Treatment | 90837 |
95 | Too few peers to compare |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
52 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
75 | As often as other peers in Addiction Psychiatry |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
30 | Less often than most peers in Addiction Psychiatry |
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.
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.
Other addiction psychiatry specialists in Baltimore 8
Same specialty, same city.
Trained at Wright State University Boonshoft School of Medicine 1
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2011 at Wright State University Boonshoft School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Joy Chang specialize in?
Joy Chang is an addiction psychiatry in Baltimore, MD. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Joy Chang located?
Joy Chang is listed at 110 S Paca St 4N149, Baltimore, MD 21201. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Joy Chang's phone number?
The number on file is (410) 328-1834. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Joy Chang's NPI number?
Joy Chang's National Provider Identifier is 1154620540. 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 Joy Chang train?
Joy Chang attended Wright State University Boonshoft School of Medicine, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
How long has Joy Chang been practicing?
Joy Chang has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
What does Joy Chang do most often?
According to Medicare billing data, Joy Chang provides treatments such as psychotherapy, 30 minutes and psychotherapy, 45 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Joy Chang confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Joy Chang. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.