Dr. John Thomas Carroll, DO
- Medicare services, 2024
- 14
- Medicare patients, 2026
- 19
- Part D claims, 2026
- 38
- Industry payments
- $123
- Affiliated sites
- 1
- Practice address
- 805 S Union Ave, Havre De Grace, MD 21078-3610
- Practice phone
- Call (410) 939-5843
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Silverstein Medical
Primary care practice · Havre De Grace, Maryland
Find Dr. Carroll'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 Thomas Carroll is a general practice physician in Havre De Grace, Maryland
Dr. Carroll practices at Silverstein Medical in Havre De Grace, Maryland.
Dr. Carroll's NPI, 1457573578, was assigned on May 2, 2007. Dr. Carroll holds Maryland license H47469.
- NPI
- 1457573578NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688614670
- NPI enumeration date
- May 2, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 939-5843
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Thomas Carroll practices at Silverstein Medical in Havre De Grace, Maryland
Dr. Carroll's primary practice is Silverstein Medical, at 805 S Union Ave, Havre De Grace, MD 21078-3610. The practice phone is (410) 939-5843.
- Silverstein Medical805 S Union Ave, Havre De Grace, MD 21078-3610Phone(410) 939-5843
Source: Dmand AI Affiliation Data
Dr. John Thomas Carroll is affiliated with 1 site of care and 3 medical groups
Dr. Carroll's primary practice is Silverstein Medical in Havre De Grace, Maryland. The medical group on file is Silverstein Medical. Dmand AI also links Dr. Carroll to 2 more medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Thomas Carroll's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Carroll practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Silverstein Medical | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Thomas Carroll is one of 154 general practice physicians in Maryland
General practice is Dr. Carroll's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Carroll is licensed in Maryland.
Specialties and state licenses
- General practice, MarylandPrimary
General practice physicians near Dr. Carroll
Counts of general practice physicians 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 Thomas Carroll billed Medicare for 14 services in 2024
CMS data shows 14 Medicare services from Dr. Carroll across 1 procedure code in 2024, all of them office visits, for 19 Medicare patients. Medicare paid $1,441 for them. Every service was in an office.
Dr. Carroll's Medicare services by type, 2021 to 2024
- 2021
- 2024
- Office and hospital visits
- 2021: 642024: 1478%
- Lab and pathology
- 2021: 1402024: 0100%
Dr. Carroll compared with the Maryland median for general practice physicians, 2024
- Dr. Carroll
- Maryland median
- Medicare services
- 14vs 38596% below
- Medicare patients
- 19vs 18089% below
- Part D claims
- 15vs 11287% below
Medians across 85 general practice physicians in Maryland with Dmand AI profiles that report each measure.
Dr. Carroll'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. John Thomas Carroll treated 19 Medicare patients in 2026, average age 68
CMS counts 19 Medicare patients who saw Dr. Carroll in 2026. The largest group is 85 and over, with 0 patients. 75% of them have high cholesterol. Their average risk score is 0.58, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Carroll's median patient age at 59, with 54% women.
Dr. Carroll's Medicare patients by age, 2026
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Carroll's Medicare patients, 2026
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Carroll's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
Dr. John Thomas Carroll wrote 38 Medicare Part D claims in 2026
In 2026, Dr. Carroll wrote 38 Medicare Part D claims for 30 patients. 92% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $521 in total drug cost. In 2019, CMS named 244 claims across 11 drugs.
Dr. Carroll's Part D claims by kind of drug, 2026
- Generic35 claims92%
- Brand-name and other3 claims8%
Dr. Carroll's most prescribed drugs by claims, 2020
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. Carroll's Part D claims, 2026
- Antibiotics63%24 of 38 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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 2442020: 1594%
Drugs named by CMS: 1 in 2020, 11 in 2019.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2026 data
How Dr. John Thomas Carroll takes part in Medicare
Dr. Carroll accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Thomas Carroll received $123 in industry payments from 2016 to 2019
CMS Open Payments shows 2 general payments to Dr. Carroll from 2 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $100.
General payments to Dr. Carroll by program year, 2016 to 2019
Companies that paid Dr. Carroll the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Thomas Carroll'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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Thomas Carroll
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 Thomas Carroll's NPI number?
Dr. John Thomas Carroll's NPI number is 1457573578. It was assigned on May 2, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John Thomas Carroll?
Dr. John Thomas Carroll is a general practice physician in Havre De Grace, Maryland. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. John Thomas Carroll practice?
Dr. Carroll practices at 805 S Union Ave, Havre De Grace, MD 21078-3610. Dr. Carroll's primary practice is Silverstein Medical in Havre De Grace, Maryland. Dmand AI also links Dr. Carroll to 2 medical groups, and a free account names each one.
What is Dr. John Thomas Carroll's office phone number?
The practice phone on file for Dr. Carroll is (410) 939-5843. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. John Thomas Carroll's email address?
Dmand AI checks professional and personal email addresses for Dr. Carroll through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. John Thomas Carroll's medical license number?
Dr. Carroll holds Maryland license H47469.
What medical group is Dr. John Thomas Carroll part of?
Dr. Carroll is linked to Silverstein Medical. Dmand AI links Dr. Carroll to 2 more medical groups, named with a free account.
Who does Dr. John Thomas Carroll practice with?
Dmand AI links 6 HCPs to Dr. Carroll's primary medical group, 2 of them general practice physicians. A free account lists them, with verified contacts.
Does Dr. John Thomas Carroll accept Medicare?
Yes. CMS data shows Dr. Carroll billed Medicare for 14 services in 2024, and Dr. Carroll accepts Medicare assignment.
How many Medicare patients does Dr. John Thomas Carroll see?
CMS counts 19 Medicare patients who saw Dr. Carroll in 2026, with an average age of 68.
Show 5 more questionsShow fewer questions
What services does Dr. John Thomas Carroll bill to Medicare?
In 2024, Dr. Carroll's most billed Medicare services were office visit, established patient (99214).
What drugs does Dr. John Thomas Carroll prescribe most?
In 2020 Medicare Part D data, Dr. Carroll's most prescribed drugs by claims were Cefdinir.
Has Dr. John Thomas Carroll received payments from drug or device companies?
CMS Open Payments shows $123 in general payments to Dr. Carroll from 2 companies from 2016 to 2019. The largest total came from Allergan Inc.
How long has Dr. John Thomas Carroll been practicing?
Dr. Carroll graduated from medical school in 1993, 33 years ago.
What EHR does Dr. John Thomas Carroll's practice use?
Dmand AI tracks the EHR system at Silverstein Medical and at 2 medical groups. The vendor and product are available with a free Dmand AI account.
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