Dr. John P. Mackrell, MD
- Medicare services, 2024
- 3,589
- Medicare patients, 2024
- 2,234
- MIPS score, 2024
- 82
- Hospital affiliations
- 6
- Medical groups
- 6
- Practice address
- 106 Bow Street, Elkton, MD 21921
- Practice phone
- Call (410) 392-7009
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mackrell'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. John P. Mackrell is a diagnostic radiologist in Elkton, Maryland
Dr. Mackrell practices at ChristianaCare Union Hospital in Elkton, Maryland, part of ChristianaCare.
Dr. Mackrell's NPI, 1447426499, was assigned on April 30, 2008. Dr. Mackrell graduated from Temple University School of Medicine in 2003. Dr. Mackrell holds Pennsylvania license MD437887.
- NPI
- 1447426499NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193864445
- NPI enumeration date
- April 30, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 392-7009
- 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 Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John P. Mackrell practices at ChristianaCare Union Hospital in Elkton, Maryland
Dr. Mackrell's primary practice is ChristianaCare Union Hospital, at 106 Bow Street, Elkton, MD 21921 in Cecil County. The practice phone is (410) 392-7009.
- ChristianaCare Union Hospital106 Bow Street, Elkton, MD 21921 · Cecil CountyPhone(410) 392-7009
Source: Dmand AI Affiliation Data
Dr. John P. Mackrell is affiliated with 7 sites of care and 6 medical groups
Dr. Mackrell's primary practice is ChristianaCare Union Hospital in Elkton, Maryland, part of ChristianaCare. Dr. Mackrell is also affiliated with MedStar Washington Hospital Center. The medical group on file is ChristianaCare Union Hospital. Dmand AI also links Dr. Mackrell to 4 more hospitals, 5 medical groups and 1 group practice or clinic, each named with a free account. Dr. Mackrell's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John P. Mackrell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mackrell practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Union Hospital | Available with a free account |
| +6 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John P. Mackrell is one of 626 diagnostic radiologists in Maryland
Diagnostic radiology is Dr. Mackrell's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. Mackrell's licenses on file in 2 states: Pennsylvania and New Jersey.
Specialties and state licenses
- Diagnostic radiology, PennsylvaniaPrimary
- New Jersey license
Diagnostic radiologists near Dr. Mackrell
Counts of diagnostic radiologists 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. John P. Mackrell billed Medicare for 3,589 services in 2024
CMS data shows 3,589 Medicare services from Dr. Mackrell across 51 procedure codes in 2024, for 2,234 Medicare patients. Medicare paid $85,211 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mackrell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,6902024: 3,37025%
- Tests and treatments
- 2023: 882024: 219149%
Dr. Mackrell compared with the Maryland median for diagnostic radiologists, 2024
- Dr. Mackrell
- Maryland median
- Medicare services
- 3,589vs 5,24132% below
- Medicare patients
- 2,234vs 1,94415% above
Medians across 602 diagnostic radiologists in Maryland with Dmand AI profiles that report each measure.
Dr. Mackrell'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. Mackrell and other diagnostic radiologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John P. Mackrell treated 2,234 Medicare patients in 2024, average age 74
CMS counts 2,234 Medicare patients who saw Dr. Mackrell in 2024. The largest group is 65 to 74, with 881 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Mackrell's median patient age at 53, with 57% women.
Dr. Mackrell's Medicare patients by age, 2024
Dr. Mackrell's Medicare patients by sex, 2024
- Women1,30658%
- Men92842%
Chronic conditions among Dr. Mackrell's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Diabetes44%
- Ischemic heart disease39%
- Mood disorders38%
- Anxiety36%
- Chronic kidney disease36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mackrell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John P. Mackrell scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Mackrell for performance year 2024, reported as part of a group. Dr. Mackrell accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mackrell's MIPS scores, performance year 2024
- 82of 100Final score
- 67.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 69of 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. John P. Mackrell graduated from Temple University School of Medicine
Dr. Mackrell graduated from Temple University School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John P. Mackrell'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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 DataMedicare Physician & Other Practitioners - 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) |
| 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. John P. Mackrell
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. John P. Mackrell's NPI number?
Dr. John P. Mackrell's NPI number is 1447426499. It was assigned on April 30, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. John P. Mackrell?
Dr. John P. Mackrell is a diagnostic radiologist in Elkton, Maryland. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. John P. Mackrell practice?
Dr. Mackrell practices at 106 Bow Street, Elkton, MD 21921. Dr. Mackrell's primary practice is ChristianaCare Union Hospital in Elkton, Maryland, part of ChristianaCare. Dmand AI also links Dr. Mackrell to 4 hospitals, 5 medical groups and 1 group practice or clinic.
What is Dr. John P. Mackrell's office phone number?
The practice phone on file for Dr. Mackrell is (410) 392-7009.
What is Dr. John P. Mackrell's medical license number?
Dr. Mackrell holds Pennsylvania license MD437887, one of the licenses on file in 2 states.
Which states has Dr. John P. Mackrell been licensed in?
Dmand AI has state licenses on file for Dr. Mackrell in Pennsylvania and New Jersey.
Which hospitals is Dr. John P. Mackrell affiliated with?
Dr. Mackrell practices at ChristianaCare Union Hospital in Elkton, Maryland. Dr. Mackrell is also affiliated with MedStar Washington Hospital Center. Dmand AI links Dr. Mackrell to 4 more hospitals.
What medical group is Dr. John P. Mackrell part of?
Dr. Mackrell is linked to ChristianaCare Union Hospital. Dmand AI links Dr. Mackrell to 5 more medical groups.
Does Dr. John P. Mackrell accept Medicare?
Yes. CMS data shows Dr. Mackrell billed Medicare for 3,589 services in 2024, and Dr. Mackrell accepts Medicare assignment.
What is Dr. John P. Mackrell's MIPS score?
Dr. Mackrell's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
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How many Medicare patients does Dr. John P. Mackrell see?
CMS counts 2,234 Medicare patients who saw Dr. Mackrell in 2024, with an average age of 74.
What services does Dr. John P. Mackrell bill to Medicare?
In 2024, Dr. Mackrell's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (71046) and diagnostic imaging (70450).
Where did Dr. John P. Mackrell go to medical school?
Dr. Mackrell graduated from Temple University School of Medicine in 2003.
How long has Dr. John P. Mackrell been practicing?
Dr. Mackrell graduated from medical school in 2003, 23 years ago.
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