Dr. Benjamin Cassin Johnson, MD
- Part D claims, 2024
- 189
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2021
- Practice address
- 1000 E Eager Street, Baltimore, MD 21202
- Practice phone
- Call (410) 522-9800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
East Baltimore Medical Center
FQHC - Main Site · Baltimore, Maryland
Find Dr. Johnson's professional email, personal email and mobile number
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Dr. Benjamin Cassin Johnson is an internist in Baltimore, Maryland
Dr. Johnson practices at East Baltimore Medical Center in Baltimore, Maryland.
Dr. Johnson's NPI, 1497332928, was assigned on March 29, 2021. Dr. Johnson graduated from Perelman School of Med at the University of Pennsylvania in 2021. Dr. Johnson holds Maryland license D0103076.
- NPI
- 1497332928NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022417054
- NPI enumeration date
- March 29, 2021
- NPI status
- Active
- Offers telehealth
- Yes
- Practice phone
- (410) 522-9800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Benjamin Cassin Johnson practices at East Baltimore Medical Center in Baltimore, Maryland
Dr. Johnson's primary practice is East Baltimore Medical Center, at 1000 E Eager Street, Baltimore, MD 21202 in Baltimore City. The practice phone is (410) 522-9800.
- East Baltimore Medical Center1000 E Eager Street, Baltimore, MD 21202 · Baltimore CityPhone(410) 522-9800
Source: Dmand AI Affiliation Data
Dr. Benjamin Cassin Johnson is affiliated with 5 sites of care and 2 medical groups
Dr. Johnson's primary practice is East Baltimore Medical Center in Baltimore, Maryland. Dr. Johnson is also affiliated with The Johns Hopkins Hospital. The medical group on file is Johns Hopkins University. Dmand AI also links Dr. Johnson to 2 more group practices and clinics, 1 home health agency and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Benjamin Cassin Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| East Baltimore Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Benjamin Cassin Johnson is one of 3,320 internists in Maryland
Internal medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Johnson is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
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. Benjamin Cassin Johnson's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 65, with 46% 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 65
Patient panel by sex, all payers
- Women46%
- Men54%
Source: Dmand AI Patient Panel Data
Dr. Benjamin Cassin Johnson wrote 189 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 189 Medicare Part D claims for 49 patients. 92% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $68 in total drug cost.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic174 claims92%
- Brand-name and other15 claims8%
Dr. Johnson'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.
Drug classes CMS tracks in Dr. Johnson's Part D claims, 2024
- Antibiotics15%29 of 189 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Benjamin Cassin Johnson offers telehealth to Medicare patients
CMS lists Dr. Johnson as offering telehealth.
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Benjamin Cassin Johnson graduated from Perelman School of Med at the University of Pennsylvania
Dr. Johnson graduated from Perelman School of Med at the University of Pennsylvania in 2021.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Benjamin Cassin 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. Benjamin Cassin 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. Benjamin Cassin Johnson's NPI number?
Dr. Benjamin Cassin Johnson's NPI number is 1497332928. It was assigned on March 29, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Benjamin Cassin Johnson?
Dr. Benjamin Cassin Johnson is an internist in Baltimore, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Benjamin Cassin Johnson practice?
Dr. Johnson practices at 1000 E Eager Street, Baltimore, MD 21202. Dr. Johnson's primary practice is East Baltimore Medical Center in Baltimore, Maryland. Dmand AI also links Dr. Johnson to 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. Benjamin Cassin Johnson's office phone number?
The practice phone on file for Dr. Johnson is (410) 522-9800.
What is Dr. Benjamin Cassin Johnson's medical license number?
Dr. Johnson holds Maryland license D0103076.
Which hospitals is Dr. Benjamin Cassin Johnson affiliated with?
Dr. Johnson is affiliated with The Johns Hopkins Hospital.
What medical group is Dr. Benjamin Cassin Johnson part of?
Dr. Johnson is linked to Johns Hopkins University. Dmand AI links Dr. Johnson to 1 more medical group.
Does Dr. Benjamin Cassin Johnson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Johnson as offering telehealth services.
Where did Dr. Benjamin Cassin Johnson go to medical school?
Dr. Johnson graduated from Perelman School of Med at the University of Pennsylvania in 2021.
What drugs does Dr. Benjamin Cassin Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Fluticasone Propionate.
How long has Dr. Benjamin Cassin Johnson been practicing?
Dr. Johnson graduated from medical school in 2021, 5 years ago.
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