DR. JOY CHANG M.D.
NPI 1154620540
Psychiatry & Neurology - Addiction Psychiatry in Baltimore, MD

Q: What is Joy Chang's NPI number?

The NPI number for Joy Chang is 1154620540. It was assigned to this individual provider in the NPPES registry on March 24, 2011.

Q: What is Joy Chang's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Psychiatry, with taxonomy code 2084P0802X.

Q: When was this NPI record last updated?

The NPPES record for Joy Chang was last updated on July 30, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 24, 2011PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

110 S PACA ST, 4N149, BALTIMORE, MD 21201(410) 328-1834(410) 328-1749 Get Directions Write a Review

NPPES record last updated: July 30, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Joy Chang M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOY CHANG M.D. (NPI 1154620540) is an individual addiction psychiatry provider in Baltimore, Maryland, licensed in Maryland (D0076718) and active in the NPI registry since March 2011. She is enrolled in Medicare PECOS and is a graduate of Wright State University Boonshoft School Of Medicine (2011).

NPPES Registry Identity

NPI1154620540

Entity TypeIndividualFemale

Primary Taxonomy2084P0802X

Provider Legal NameDR. JOY CHANGCredential: M.D.

Location Address110 S PACA ST, 4N149Baltimore, MD 21201-1642

Mailing Address110 S Paca St, 4n149Baltimore, MD 21201-1642 · (410) 328-1834 · Fax (410) 328-1749

Phone(410) 328-1834

Fax(410) 328-1749

Sole ProprietorNo

Medical School CMSWright State University Boonshoft School Of MedicineGraduated 2011

Enumeration DateMarch 24, 2011

Last NPPES UpdateJuly 30, 2016

✔ NPI 1154620540 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Addiction PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0802X

License✔ Licensed in MD · D0076718

Definition

Addiction Psychiatry is a subspecialty of psychiatry that focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.

110 S PACA ST, Baltimore, MD 21201

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Joy Chang M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7911210851

PECOS Enrollment IDI20240403001869

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Joy Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cornerstone Montgomery, Inc.

28 mi

Adult Mental Health

1398 LAMBERTON DR
Silver Spring, MD 20902

Reassigned Medicare billing, District of Columbia enrollment
51 clinicians in this Medicare group

NPI 1174995781 (301) 493-4200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 30 minutes 90832

Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 30-minute session, the therapist helps you explore feelings, thoughts, and behaviors to better understand yourself and manage life's challenges.

215 services42 patients

Psychotherapy, 45 minutes 90834

Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.

137 services36 patients

Psychotherapy, 1 hour 90837

Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.

95 services23 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

75 services20 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

52 services17 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

30 services11 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Promoting Interoperability

Improvement Activities

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JASJIT B ATWAL M.D.

Anesthesiology

110 S PACA ST, SUITE 300 6TH FL
BALTIMORE, MD 21201

Baltimore City (410) 328-6720

SIAMAK MOAYEDI M.D.

Emergency Medicine

110 S PACA ST, SIXTH FLOOR, SUITE 200
BALTIMORE, MD 21201

Baltimore City (410) 328-8025

JUDY PAN MD

Otolaryngology (Plastic Surgery within the Head & Neck)

110 S PACA ST
BALTIMORE, MD 21201

Baltimore City (410) 328-3058

JOHNS HOPKINS COMMUNITY PHYSICIANS, INC

Internal Medicine

110 S PACA ST
BALTIMORE, MD 21201

Baltimore City (410) 955-5000

DR. ILEANA GHEORGHIU M.D.

Anesthesiology

110 S PACA ST, SUITE 300 6TH FL
BALTIMORE, MD 21201

Baltimore City (410) 328-6720

MAELEE GRACE WILLIAMSON MD

Student in an Organized Health Care Education/Training Program

110 S PACA ST, 6TH FLOOR, SUITE 200
BALTIMORE, MD 21201

Baltimore City (667) 214-2208

DR. SHOBANA BHARADWAJ M.D.

Anesthesiology

110 S PACA ST, SUITE 300 6TH FL
BALTIMORE, MD 21201

Baltimore City (410) 328-6720

DR. SEEMA P. DESHPANDE MBBS

Anesthesiology

110 S PACA ST, SUITE 300, 6TH FLOOR
BALTIMORE, MD 21201

Baltimore City (410) 328-6331

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joy Chang's NPI number?

The NPI number for Joy Chang is 1154620540. It was assigned to this individual provider in the NPPES registry on March 24, 2011.

Where is Joy Chang located?

Joy Chang practices at 110 S Paca St 4n149, Baltimore, MD 21201. The listed phone number is (410) 328-1834.

What is Joy Chang's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Psychiatry, with taxonomy code 2084P0802X.

Is Joy Chang enrolled in Medicare?

Yes. Joy Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Joy Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joy Chang reassigns Medicare benefits to Cornerstone Montgomery, Inc. (Silver Spring, MD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joy Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Joy Chang was last updated on July 30, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.