Dr. Katherine Chang Chretien, MD
- Medicare services, 2023
- 67
- Part D claims, 2024
- 32
- MIPS score, 2024
- 83
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 600 N Wolfe St, Baltimore, MD 21287
- Practice phone
- Call (855) 662-3017
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Johns Hopkins Hospital Nelson/Harvey Building
Baltimore, Maryland
Find Dr. Chretien'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. Katherine Chang Chretien is an internist in Baltimore, Maryland
Dr. Chretien practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland.
Dr. Chretien's NPI, 1275638710, was assigned on September 13, 2006. Dr. Chretien graduated from Johns Hopkins University School of Medicine in 2000. Dr. Chretien holds Maryland license D60240.
- NPI
- 1275638710NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395975890
- NPI enumeration date
- September 13, 2006
- NPI status
- Active
- Practice phone
- (855) 662-3017
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Katherine Chang Chretien practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland
Dr. Chretien's primary practice is Johns Hopkins Hospital Nelson/Harvey Building, at 600 N Wolfe St, Baltimore, MD 21287 in Baltimore City. The practice phone is (855) 662-3017.
- Johns Hopkins Hospital Nelson/Harvey Building600 N Wolfe St, Baltimore, MD 21287 · Baltimore CityPhone(855) 662-3017
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Katherine Chang Chretien is affiliated with 2 sites of care and 2 medical groups
Dr. Chretien's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland. Dr. Chretien is also affiliated with The Johns Hopkins Hospital. The medical group on file is Johns Hopkins University. Dmand AI also links Dr. Chretien to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Katherine Chang Chretien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chretien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Johns Hopkins Hospital Nelson/Harvey Building | 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. Katherine Chang Chretien is one of 3,320 internists in Maryland
Internal medicine is Dr. Chretien's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chretien is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Chretien
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. Katherine Chang Chretien billed Medicare for 67 services in 2023
CMS data shows 67 Medicare services from Dr. Chretien across 2 procedure codes in 2023. Medicare paid $3,756 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chretien's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 1912023: 6765%
Dr. Chretien compared with the Maryland median for internists, 2023
- Dr. Chretien
- Maryland median
- Medicare services
- 67vs 65690% below
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Chretien's most billed Medicare procedure codes, 2023
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. Chretien and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Katherine Chang Chretien's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Chretien's median patient age at 69, with 50% women.
Dr. Chretien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Katherine Chang Chretien wrote 32 Medicare Part D claims in 2024
In 2024, Dr. Chretien wrote 32 Medicare Part D claims for 14 patients. 81% of them were for generic drugs.
Dr. Chretien's Part D claims by kind of drug, 2024
- Generic26 claims81%
- Brand-name and other6 claims19%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Katherine Chang Chretien scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Chretien for performance year 2024, reported as part of a group.
Dr. Chretien's MIPS scores, performance year 2024
- 83of 100Final score
- 73.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Katherine Chang Chretien graduated from Johns Hopkins University School of Medicine
Dr. Chretien graduated from Johns Hopkins University School of Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Katherine Chang Chretien'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 DataDmand AI Org Hierarchy 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (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. Katherine Chang Chretien
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. Katherine Chang Chretien's NPI number?
Dr. Katherine Chang Chretien's NPI number is 1275638710. It was assigned on September 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine Chang Chretien?
Dr. Katherine Chang Chretien is an internist in Baltimore, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Katherine Chang Chretien practice?
Dr. Chretien practices at 600 N Wolfe St, Baltimore, MD 21287. Dr. Chretien's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland. Dmand AI also links Dr. Chretien to 1 medical group.
What is Dr. Katherine Chang Chretien's office phone number?
The practice phone on file for Dr. Chretien is (855) 662-3017.
What is Dr. Katherine Chang Chretien's medical license number?
Dr. Chretien holds Maryland license D60240.
Which hospitals is Dr. Katherine Chang Chretien affiliated with?
Dr. Chretien is affiliated with The Johns Hopkins Hospital.
What medical group is Dr. Katherine Chang Chretien part of?
Dr. Chretien is linked to Johns Hopkins University. Dmand AI links Dr. Chretien to 1 more medical group.
Does Dr. Katherine Chang Chretien accept Medicare?
Yes. CMS data shows Dr. Chretien billed Medicare for 67 services in 2023.
What is Dr. Katherine Chang Chretien's MIPS score?
Dr. Chretien's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
What services does Dr. Katherine Chang Chretien bill to Medicare?
In 2023, Dr. Chretien's most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99231).
Where did Dr. Katherine Chang Chretien go to medical school?
Dr. Chretien graduated from Johns Hopkins University School of Medicine in 2000.
How long has Dr. Katherine Chang Chretien been practicing?
Dr. Chretien graduated from medical school in 2000, 26 years ago.
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