Dr. Yumei Mary Chang, MD
- Medicare services, 2024
- 96
- Medicare patients, 2024
- 27
- Part D claims, 2024
- 1,502
- Industry payments
- $7,121
- Affiliated sites
- 1
- Practice address
- 250 W 64th St, New York, NY 10023
- Practice phone
- Call (212) 769-6313
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Jgb Rehabilitation Corporation
New York, New York
Find Dr. Chang's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Yumei Mary Chang is an internist in New York, New York
Dr. Chang practices at Jgb Rehabilitation Corporation in New York, New York.
Dr. Chang's NPI, 1134381908, was assigned on July 1, 2008. Dr. Chang graduated from University of California, Geffen School of Medicine in 2007. Dr. Chang holds Pennsylvania license MD463062.
- NPI
- 1134381908NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709064157
- NPI enumeration date
- July 1, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (212) 769-6313
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Yumei Mary Chang practices at Jgb Rehabilitation Corporation in New York, New York
Dr. Chang's primary practice is Jgb Rehabilitation Corporation, at 250 W 64th St, New York, NY 10023 in New York County. The practice phone is (212) 769-6313.
- Jgb Rehabilitation Corporation250 W 64th St, New York, NY 10023 · New York CountyPhone(212) 769-6313
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Yumei Mary Chang is affiliated with 2 sites of care and 2 medical groups
Dr. Chang's primary practice is Jgb Rehabilitation Corporation in New York, New York. The medical group on file is Mount Sinai Institute for Liver Medicine. Dmand AI also links Dr. Chang to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Yumei Mary Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jgb Rehabilitation Corporation | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Yumei Mary Chang is one of 9,643 internists in New York
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Chang
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Yumei Mary Chang billed Medicare for 96 services in 2024
CMS data shows 96 Medicare services from Dr. Chang across 4 procedure codes in 2024, for 27 Medicare patients. Medicare paid $5,979 for them. Every service was in an office.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 762024: 743%
- Surgery
- 2023: 212024: 225%
Dr. Chang compared with the New York median for internists, 2024
- Dr. Chang
- New York median
- Medicare services
- 96vs 42677% below
- Medicare patients
- 27vs 15883% below
- Part D claims
- 1,130vs 62282% above
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Yumei Mary Chang treated 27 Medicare patients in 2024, average age 69
CMS counts 27 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 11 patients. 74% of them have high cholesterol, and 59% have high blood pressure. 59% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 60, with 59% women.
Dr. Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chang's Medicare patients by sex, 2024
- Women1244%
- Men1556%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High cholesterol74%
- High blood pressure59%
- Mood disorders41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women59%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Yumei Mary Chang wrote 1,502 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 1,502 Medicare Part D claims for 103 patients. 85% of them were for generic drugs. CMS names the drug for 1,130 of them, across 39 drugs with 11 or more claims each, at $80,986 in total drug cost. In 2023, CMS named 605 claims across 28 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic1,271 claims85%
- Brand-name212 claims14%
- Other19 claims1%
Dr. Chang's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6052024: 1,13087%
Drugs named by CMS: 39 in 2024, 28 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Yumei Mary Chang offers telehealth to Medicare patients
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Yumei Mary Chang received $7,121 in industry payments from 2018 to 2024
CMS Open Payments shows 13 general payments to Dr. Chang from 3 drug and device companies from 2018 to 2024. Consulting fees make up the largest share, 79% of the total. Sanofi and Genzyme US Companies paid the most, $6,955.
General payments to Dr. Chang by program year, 2018 to 2024
General payments to Dr. Chang by kind, 2018 to 2024
- Consulting fees$5,62179%
- Travel and lodging$1,13916%
- Food and beverage$3615%
Companies that paid Dr. Chang the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Yumei Mary Chang graduated from University of California, Geffen School of Medicine
Dr. Chang graduated from University of California, Geffen School of Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Yumei Mary Chang's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Yumei Mary Chang
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Yumei Mary Chang's NPI number?
Dr. Yumei Mary Chang's NPI number is 1134381908. It was assigned on July 1, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Yumei Mary Chang?
Dr. Yumei Mary Chang is an internist in New York, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Yumei Mary Chang practice?
Dr. Chang practices at 250 W 64th St, New York, NY 10023. Dr. Chang's primary practice is Jgb Rehabilitation Corporation in New York, New York. Dmand AI also links Dr. Chang to 1 group practice or clinic and 1 medical group.
What is Dr. Yumei Mary Chang's office phone number?
The practice phone on file for Dr. Chang is (212) 769-6313.
What is Dr. Yumei Mary Chang's medical license number?
Dr. Chang holds Pennsylvania license MD463062.
What medical group is Dr. Yumei Mary Chang part of?
Dr. Chang is linked to Mount Sinai Institute for Liver Medicine. Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. Yumei Mary Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 96 services in 2024, and Dr. Chang accepts Medicare assignment.
Does Dr. Yumei Mary Chang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chang as offering telehealth services.
How many Medicare patients does Dr. Yumei Mary Chang see?
CMS counts 27 Medicare patients who saw Dr. Chang in 2024, with an average age of 69.
What services does Dr. Yumei Mary Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99213), surgery: heart and blood vessels (36415) and office visit, established patient (99214).
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Where did Dr. Yumei Mary Chang go to medical school?
Dr. Chang graduated from University of California, Geffen School of Medicine in 2007.
What drugs does Dr. Yumei Mary Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Amlodipine-Valsartan.
Has Dr. Yumei Mary Chang received payments from drug or device companies?
CMS Open Payments shows $7,121 in general payments to Dr. Chang from 3 companies from 2018 to 2024. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Yumei Mary Chang been practicing?
Dr. Chang graduated from medical school in 2007, 19 years ago.
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