Dr. Terrell Yancy Johnson, MD
- Medicare services, 2024
- 171
- Medicare patients, 2024
- 158
- Part D claims, 2024
- 413
- Hospital affiliations
- 2
- Medical group
- 1
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
Find Dr. Johnson's professional email, personal email and mobile number
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Dr. Terrell Yancy Johnson is an internist in Mendon, Massachusetts
Dr. Johnson practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. Johnson's NPI, 1376839563, was assigned on June 26, 2011. Dr. Johnson graduated from Boston University School of Medicine in 2011. Dr. Johnson holds Massachusetts license 257812.
- NPI
- 1376839563NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507089026
- NPI enumeration date
- June 26, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Terrell Yancy Johnson practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. Johnson's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Terrell Yancy Johnson is affiliated with 3 sites of care and 1 medical group
Dr. Johnson's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dr. Johnson is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Johnson to 1 more hospital, 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. Terrell Yancy Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Terrell Yancy Johnson is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Johnson is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
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. Terrell Yancy Johnson billed Medicare for 171 services in 2024
CMS data shows 171 Medicare services from Dr. Johnson across 3 procedure codes in 2024, all of them office visits, for 158 Medicare patients. Medicare paid $8,878 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johnson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1152024: 17149%
Dr. Johnson compared with the Massachusetts median for internists, 2024
- Dr. Johnson
- Massachusetts median
- Medicare services
- 171vs 43160% below
- Medicare patients
- 158vs 19419% below
- Part D claims
- 165vs 40259% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Johnson'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Terrell Yancy Johnson treated 158 Medicare patients in 2024, average age 71
CMS counts 158 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 74 patients. 70% of them have high blood pressure, and 67% have high cholesterol. 35% are also on Medicaid. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 62, with 34% women.
Dr. Johnson's Medicare patients by age, 2024
Dr. Johnson's Medicare patients by sex, 2024
- Women8755%
- Men7145%
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- High blood pressure70%
- High cholesterol67%
- Arthritis48%
- Mood disorders34%
- Diabetes32%
- Anxiety29%
- Depression27%
- Chronic kidney disease25%
Share of Medicare patients with each condition. A patient can have several.
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 62
Patient panel by sex, all payers
- Women34%
- Men66%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Terrell Yancy Johnson wrote 413 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 413 Medicare Part D claims for 118 patients. 85% of them were for generic drugs. CMS names the drug for 165 of them, across 10 drugs with 11 or more claims each, at $1,267 in total drug cost. In 2023, CMS named 1,324 claims across 42 drugs.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic349 claims85%
- Brand-name49 claims12%
- Other15 claims4%
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
- Antibiotics4%17 of 413 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,3242024: 16588%
Drugs named by CMS: 10 in 2024, 42 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. Terrell Yancy Johnson offers telehealth to Medicare patients
Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Johnson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Terrell Yancy Johnson graduated from Boston University School of Medicine
Dr. Johnson graduated from Boston University School of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Terrell Yancy 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 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) |
| 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)Doctors and Clinicians Utilization Data (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. Terrell Yancy 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. Terrell Yancy Johnson's NPI number?
Dr. Terrell Yancy Johnson's NPI number is 1376839563. It was assigned on June 26, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Terrell Yancy Johnson?
Dr. Terrell Yancy Johnson is an internist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Terrell Yancy Johnson practice?
Dr. Johnson practices at 55 North Ave, Mendon, MA 01756. Dr. Johnson's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. Johnson to 1 hospital.
What is Dr. Terrell Yancy Johnson's office phone number?
The practice phone on file for Dr. Johnson is (508) 334-1000.
What is Dr. Terrell Yancy Johnson's medical license number?
Dr. Johnson holds Massachusetts license 257812.
Which hospitals is Dr. Terrell Yancy Johnson affiliated with?
Dr. Johnson is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Johnson to 1 more hospital.
What medical group is Dr. Terrell Yancy Johnson part of?
Dr. Johnson is linked to UMass Memorial Medical Group.
Does Dr. Terrell Yancy Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 171 services in 2024, and Dr. Johnson accepts Medicare assignment.
Does Dr. Terrell Yancy Johnson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Johnson as offering telehealth services.
How many Medicare patients does Dr. Terrell Yancy Johnson see?
CMS counts 158 Medicare patients who saw Dr. Johnson in 2024, with an average age of 71.
Show 4 more questionsShow fewer questions
What services does Dr. Terrell Yancy Johnson bill to Medicare?
In 2024, Dr. Johnson's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, established patient (99215).
Where did Dr. Terrell Yancy Johnson go to medical school?
Dr. Johnson graduated from Boston University School of Medicine in 2011.
What drugs does Dr. Terrell Yancy Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Atorvastatin Calcium, Albuterol Sulfate Hfa and Glipizide.
How long has Dr. Terrell Yancy Johnson been practicing?
Dr. Johnson graduated from medical school in 2011, 15 years ago.
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