Dr. Jonathan C. Jun, MD
- Medicare services, 2024
- 388
- Medicare patients, 2024
- 305
- Part D claims, 2024
- 46
- MIPS score, 2024
- 83
- Hospital affiliations
- 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. Jun'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. Jonathan C. Jun is a pulmonologist in Baltimore, Maryland
Dr. Jun practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland.
Dr. Jun's NPI, 1083751846, was assigned on January 31, 2007. Dr. Jun graduated from University of Maryland School of Medicine in 2003. Dr. Jun holds Maryland license D66156.
- NPI
- 1083751846NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496832446
- NPI enumeration date
- January 31, 2007
- NPI status
- Active
- Offers telehealth
- Yes
- Practice phone
- (855) 662-3017
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonathan C. Jun practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland
Dr. Jun'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. Jonathan C. Jun is affiliated with 4 sites of care and 2 medical groups
Dr. Jun's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland. Dr. Jun is also affiliated with The Johns Hopkins Hospital. The medical group on file is Johns Hopkins University. Dmand AI also links Dr. Jun to 1 more hospital, 1 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. Jonathan C. Jun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Jun practices, 3 sites in all. 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 |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathan C. Jun is one of 281 pulmonologists in Maryland
Pulmonary disease is Dr. Jun's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dmand AI has Dr. Jun's licenses on file in 2 states: Maryland and District of Columbia.
Specialties and state licenses
- Pulmonary disease, MarylandPrimary
- District of Columbia license
Pulmonologists near Dr. Jun
Counts of pulmonologists 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. Jonathan C. Jun billed Medicare for 388 services in 2024
CMS data shows 388 Medicare services from Dr. Jun across 10 procedure codes in 2024, for 305 Medicare patients. Medicare paid $27,970 for them.
Dr. Jun's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 902024: 17898%
- Office and hospital visits
- 2023: 1072024: 14536%
- Other services
- 2023: 02024: 65
Where Dr. Jun's Medicare services took place, 2024
- In an office5013%
- In a facility33887%
Dr. Jun compared with the Maryland median for pulmonologists, 2024
- Dr. Jun
- Maryland median
- Medicare services
- 388vs 59234% below
- Medicare patients
- 305vs 313Close to median
- Part D claims
- 13vs 33496% below
Medians across 264 pulmonologists in Maryland with Dmand AI profiles that report each measure.
Dr. Jun'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. Jun and other pulmonologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan C. Jun treated 305 Medicare patients in 2024, average age 70
CMS counts 305 Medicare patients who saw Dr. Jun in 2024. The largest group is 65 to 74, with 155 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 1.50, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Jun's median patient age at 68, with 47% women.
Dr. Jun's Medicare patients by age, 2024
Dr. Jun's Medicare patients by sex, 2024
- Women16755%
- Men13845%
Chronic conditions among Dr. Jun's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes43%
- Mood disorders40%
- Ischemic heart disease37%
- Depression35%
- Anxiety32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Jun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan C. Jun wrote 46 Medicare Part D claims in 2024
In 2024, Dr. Jun wrote 46 Medicare Part D claims. 70% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $226 in total drug cost. In 2023, CMS named 13 claims across 1 drug.
Dr. Jun's Part D claims by kind of drug, 2024
- Generic32 claims70%
- Brand-name14 claims30%
Dr. Jun'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: 132024: 13No change
Drugs named by CMS: 1 in 2024, 1 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. Jonathan C. Jun 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. Jun for performance year 2024, reported as part of a group. CMS lists Dr. Jun as offering telehealth.
- Offers telehealth
- Yes
Dr. Jun'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.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Jonathan C. Jun received $1,016 in industry payments from 2016 to 2025
CMS Open Payments shows 10 general payments to Dr. Jun from 4 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 56% of the total. Resmed Corp paid the most, $512.
General payments to Dr. Jun by program year, 2016 to 2025
General payments to Dr. Jun by kind, 2016 to 2025
- Food and beverage$57156%
- Travel and lodging$27527%
- Education$10010%
- Entertainment$697%
Companies that paid Dr. Jun the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jonathan C. Jun graduated from University of Maryland School of Medicine
Dr. Jun graduated from University of Maryland School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jonathan C. Jun'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)Clinician Public Reporting: Overall MIPS Performance (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. Jonathan C. Jun
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. Jonathan C. Jun's NPI number?
Dr. Jonathan C. Jun's NPI number is 1083751846. It was assigned on January 31, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan C. Jun?
Dr. Jonathan C. Jun is a pulmonologist in Baltimore, Maryland. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Jonathan C. Jun practice?
Dr. Jun practices at 600 N Wolfe St, Baltimore, MD 21287. Dr. Jun's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland. Dmand AI also links Dr. Jun to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Jonathan C. Jun's office phone number?
The practice phone on file for Dr. Jun is (855) 662-3017.
What is Dr. Jonathan C. Jun's medical license number?
Dr. Jun holds Maryland license D66156, one of the licenses on file in 2 states.
Which states has Dr. Jonathan C. Jun been licensed in?
Dmand AI has state licenses on file for Dr. Jun in Maryland and District of Columbia.
Which hospitals is Dr. Jonathan C. Jun affiliated with?
Dr. Jun is affiliated with The Johns Hopkins Hospital. Dmand AI links Dr. Jun to 1 more hospital.
What medical group is Dr. Jonathan C. Jun part of?
Dr. Jun is linked to Johns Hopkins University. Dmand AI links Dr. Jun to 1 more medical group.
Does Dr. Jonathan C. Jun accept Medicare?
Yes. CMS data shows Dr. Jun billed Medicare for 388 services in 2024.
Does Dr. Jonathan C. Jun offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Jun as offering telehealth services.
Show 7 more questionsShow fewer questions
What is Dr. Jonathan C. Jun's MIPS score?
Dr. Jun's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
How many Medicare patients does Dr. Jonathan C. Jun see?
CMS counts 305 Medicare patients who saw Dr. Jun in 2024, with an average age of 70.
What services does Dr. Jonathan C. Jun bill to Medicare?
In 2024, Dr. Jun's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and nerve and brain test (95806).
Where did Dr. Jonathan C. Jun go to medical school?
Dr. Jun graduated from University of Maryland School of Medicine in 2003.
What drugs does Dr. Jonathan C. Jun prescribe most?
In 2024 Medicare Part D data, Dr. Jun's most prescribed drugs by claims were Zolpidem Tartrate.
Has Dr. Jonathan C. Jun received payments from drug or device companies?
CMS Open Payments shows $1,016 in general payments to Dr. Jun from 4 companies from 2016 to 2025. The largest total came from Resmed Corp.
How long has Dr. Jonathan C. Jun been practicing?
Dr. Jun graduated from medical school in 2003, 23 years ago.
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