Dr. Mary Catherine Johnson, MD
- Medicare services, 2021
- 81
- Part D claims, 2024
- 19
- Affiliated sites
- 1
- Medical groups
- 2
- State license
- 1
- Practice address
- 555 N Duke St, Lancaster, PA 17602
- Practice phone
- Call (717) 544-5511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lancaster General Hospital
Lancaster, Pennsylvania
Find Dr. Johnson'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. Mary Catherine Johnson is an internist in Lancaster, Pennsylvania
Dr. Johnson practices at Lancaster General Hospital in Lancaster, Pennsylvania.
Dr. Johnson's NPI, 1932596764, was assigned on April 20, 2015. Dr. Johnson graduated from Georgetown University School of Medicine in 2015. Dr. Johnson holds Pennsylvania license MD471147.
- NPI
- 1932596764NPI Registry (opens in a new tab)
- NPI enumeration date
- April 20, 2015
- NPI status
- Active
- Practice phone
- (717) 544-5511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mary Catherine Johnson practices at Lancaster General Hospital in Lancaster, Pennsylvania
Dr. Johnson's primary practice is Lancaster General Hospital, at 555 N Duke St, Lancaster, PA 17602 in Lancaster County. The practice phone is (717) 544-5511.
- Lancaster General Hospital555 N Duke St, Lancaster, PA 17602 · Lancaster CountyPhone(717) 544-5511
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mary Catherine Johnson is affiliated with 2 sites of care and 2 medical groups
Dr. Johnson's primary practice is Lancaster General Hospital in Lancaster, Pennsylvania. The medical group on file is Palliative Medicine Consultants. Dmand AI also links Dr. Johnson 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. Mary Catherine Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lancaster General Hospital | 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. Mary Catherine Johnson is one of 5,665 internists in Pennsylvania
Internal medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Johnson is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Johnson
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. Mary Catherine Johnson billed Medicare for 81 services in 2021
CMS data shows 81 Medicare services from Dr. Johnson across 2 procedure codes in 2021. Medicare paid $6,705 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johnson's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 222021: 81268%
Dr. Johnson compared with the Pennsylvania median for internists, 2021
- Dr. Johnson
- Pennsylvania median
- Medicare services
- 81vs 41781% below
Medians across 5,518 internists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Johnson's most billed Medicare procedure codes, 2021
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. Johnson and other internists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Catherine Johnson's patients have a median age of 83
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 83, with 50% women.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 83
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Mary Catherine Johnson wrote 19 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 19 Medicare Part D claims. 79% of them were for generic drugs.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic15 claims79%
- Brand-name and other4 claims21%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Mary Catherine Johnson graduated from Georgetown University School of Medicine
Dr. Johnson graduated from Georgetown University School of Medicine in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mary Catherine Johnson'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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. Mary Catherine Johnson
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. Mary Catherine Johnson's NPI number?
Dr. Mary Catherine Johnson's NPI number is 1932596764. It was assigned on April 20, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Catherine Johnson?
Dr. Mary Catherine Johnson is an internist in Lancaster, Pennsylvania. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mary Catherine Johnson practice?
Dr. Johnson practices at 555 N Duke St, Lancaster, PA 17602. Dr. Johnson's primary practice is Lancaster General Hospital in Lancaster, Pennsylvania. Dmand AI also links Dr. Johnson to 1 group practice or clinic and 1 medical group.
What is Dr. Mary Catherine Johnson's office phone number?
The practice phone on file for Dr. Johnson is (717) 544-5511.
What is Dr. Mary Catherine Johnson's medical license number?
Dr. Johnson holds Pennsylvania license MD471147.
What medical group is Dr. Mary Catherine Johnson part of?
Dr. Johnson is linked to Palliative Medicine Consultants. Dmand AI links Dr. Johnson to 1 more medical group.
Does Dr. Mary Catherine Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 81 services in 2021.
What services does Dr. Mary Catherine Johnson bill to Medicare?
In 2021, Dr. Johnson's most billed Medicare services were hospital inpatient care (99233) and hospital inpatient care (99232).
Where did Dr. Mary Catherine Johnson go to medical school?
Dr. Johnson graduated from Georgetown University School of Medicine in 2015.
How long has Dr. Mary Catherine Johnson been practicing?
Dr. Johnson graduated from medical school in 2015, 11 years ago.
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