Dr. Andrew Johnston, MD, PhD
- Medicare services, 2024
- 117
- Medicare patients, 2024
- 47
- Part D claims, 2024
- 80
- MIPS score, 2024
- 87
- Hospital affiliations
- 1
- Practice address
- 50 Division St, New Haven, CT 06511
- Practice phone
- Call (203) 785-2140
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Yale Medicine
New Haven, Connecticut
Find Dr. Johnston'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. Andrew Johnston is a dermatologist in New Haven, Connecticut
Dr. Johnston practices at Yale Medicine in New Haven, Connecticut.
Dr. Johnston's NPI, 1497384796, was assigned on April 7, 2020. Dr. Johnston graduated from Albert Einstein College of Medicine of Yeshiva University in 2020. Dr. Johnston holds Connecticut license 77276.
- NPI
- 1497384796NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638567423
- NPI enumeration date
- April 7, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 785-2140
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Andrew Johnston practices at Yale Medicine in New Haven, Connecticut
Dr. Johnston's primary practice is Yale Medicine, at 50 Division St, New Haven, CT 06511 in South Central Ct County. The practice phone is (203) 785-2140.
- Yale Medicine50 Division St, New Haven, CT 06511 · South Central Ct CountyPhone(203) 785-2140
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Andrew Johnston is affiliated with 2 sites of care and 1 medical group
Dr. Johnston's primary practice is Yale Medicine in New Haven, Connecticut. Dr. Johnston is also affiliated with Yale New Haven Hospital. The medical group on file is Yale Health.
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. Andrew Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Yale Medicine | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrew Johnston is one of 225 dermatologists in Connecticut
Dermatology is Dr. Johnston's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Johnston is licensed in Connecticut.
Specialties and state licenses
- Dermatology, ConnecticutPrimary
Dermatologists near Dr. Johnston
Counts of dermatologists 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. Andrew Johnston billed Medicare for 117 services in 2024
CMS data shows 117 Medicare services from Dr. Johnston across 5 procedure codes in 2024, for 47 Medicare patients. Medicare paid $5,094 for them. Every service was in an office.
Dr. Johnston's Medicare services by type, 2024
- Surgery80
- Office and hospital visits37
Dr. Johnston compared with the Connecticut median for dermatologists, 2024
- Dr. Johnston
- Connecticut median
- Medicare services
- 117vs 1,41592% below
- Medicare patients
- 47vs 40088% below
- Part D claims
- 38vs 51893% below
Medians across 222 dermatologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Johnston'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.
Need commercial claims for Dr. Johnston?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johnston and other dermatologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Andrew Johnston treated 47 Medicare patients in 2024, average age 76
CMS counts 47 Medicare patients who saw Dr. Johnston in 2024. The largest group is 65 to 74, with 21 patients. 75% of them have high blood pressure, and 68% have high cholesterol. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johnston's median patient age at 70, with 36% women.
Dr. Johnston's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Johnston's Medicare patients by sex, 2024
- Women2043%
- Men2757%
Chronic conditions among Dr. Johnston's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Arthritis38%
- Ischemic heart disease34%
- Diabetes32%
- Atrial fibrillation30%
- Chronic kidney disease30%
- Heart failure28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johnston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women36%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Andrew Johnston wrote 80 Medicare Part D claims in 2024
In 2024, Dr. Johnston wrote 80 Medicare Part D claims for 42 patients. 93% of them were for generic drugs. CMS names the drug for 38 of them, across 2 drugs with 11 or more claims each, at $326 in total drug cost. In 2023, CMS named 52 claims across 2 drugs.
Dr. Johnston's Part D claims by kind of drug, 2024
- Generic74 claims93%
- Brand-name and other6 claims8%
Dr. Johnston'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: 522024: 3827%
Drugs named by CMS: 2 in 2024, 2 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. Andrew Johnston scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Johnston for performance year 2024, reported as part of a group. Dr. Johnston accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 186 procedures of removal of skin lesions by Dr. Johnston, more than 79% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Johnston's MIPS scores, performance year 2024
- 87of 100Final score
- 77.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Johnston ranks in Medicare procedure volume
- Removal of skin lesions
- 79th percentile186 procedures
- Skin biopsy
- 73rd percentile75 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Andrew Johnston received $151 in industry payments from 2022 to 2023
CMS Open Payments shows 2 general payments to Dr. Johnston from 2 drug and device companies from 2022 to 2023. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $126.
General payments to Dr. Johnston by program year, 2022 to 2023
Companies that paid Dr. Johnston the most, 2022 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Andrew Johnston graduated from Albert Einstein College of Medicine of Yeshiva University
Dr. Johnston graduated from Albert Einstein College of Medicine of Yeshiva University in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Andrew Johnston'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Andrew Johnston
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. Andrew Johnston's NPI number?
Dr. Andrew Johnston's NPI number is 1497384796. It was assigned on April 7, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew Johnston?
Dr. Andrew Johnston is a dermatologist in New Haven, Connecticut. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Andrew Johnston practice?
Dr. Johnston practices at 50 Division St, New Haven, CT 06511. Dr. Johnston's primary practice is Yale Medicine in New Haven, Connecticut.
What is Dr. Andrew Johnston's office phone number?
The practice phone on file for Dr. Johnston is (203) 785-2140.
What is Dr. Andrew Johnston's medical license number?
Dr. Johnston holds Connecticut license 77276.
Which hospitals is Dr. Andrew Johnston affiliated with?
Dr. Johnston is affiliated with Yale New Haven Hospital.
What medical group is Dr. Andrew Johnston part of?
Dr. Johnston is linked to Yale Health.
Does Dr. Andrew Johnston accept Medicare?
Yes. CMS data shows Dr. Johnston billed Medicare for 117 services in 2024, and Dr. Johnston accepts Medicare assignment.
What is Dr. Andrew Johnston's MIPS score?
Dr. Johnston's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
How many Medicare patients does Dr. Andrew Johnston see?
CMS counts 47 Medicare patients who saw Dr. Johnston in 2024, with an average age of 76.
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What services does Dr. Andrew Johnston bill to Medicare?
In 2024, Dr. Johnston's most billed Medicare services were surgery: skin and soft tissue (17003), surgery: skin and soft tissue (17000) and office visit, new patient (99203).
Where did Dr. Andrew Johnston go to medical school?
Dr. Johnston graduated from Albert Einstein College of Medicine of Yeshiva University in 2020.
What drugs does Dr. Andrew Johnston prescribe most?
In 2024 Medicare Part D data, Dr. Johnston's most prescribed drugs by claims were Ketoconazole and Triamcinolone Acetonide.
Has Dr. Andrew Johnston received payments from drug or device companies?
CMS Open Payments shows $151 in general payments to Dr. Johnston from 2 companies from 2022 to 2023. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Andrew Johnston been practicing?
Dr. Johnston graduated from medical school in 2020, 6 years ago.
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