Dr. William P. Carter III, MD
- Medicare services, 2024
- 721
- Medicare patients, 2024
- 145
- Part D claims, 2024
- 63
- Hospital affiliations
- 3
- Industry payments
- $232
- Practice address
- 1 Parkland Drive, Derry, NH 03038
- Practice phone
- Call (603) 421-2100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Carter's professional email, personal email and mobile number
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Dr. William P. Carter III is an emergency medicine physician in Derry, New Hampshire
Dr. Carter practices at Parkland Medical Center in Derry, New Hampshire, part of HCA Healthcare.
Dr. Carter's NPI, 1083795116, was assigned on October 17, 2006. Dr. Carter holds New Hampshire license 13946.
- NPI
- 1083795116NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375610306
- NPI enumeration date
- October 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (603) 421-2100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William P. Carter III practices at Parkland Medical Center in Derry, New Hampshire
Dr. Carter's primary practice is Parkland Medical Center, at 1 Parkland Drive, Derry, NH 03038 in Rockingham County. The practice phone is (603) 421-2100.
- Parkland Medical Center1 Parkland Drive, Derry, NH 03038 · Rockingham CountyPhone(603) 421-2100
Source: Dmand AI Affiliation Data
Dr. William P. Carter III is affiliated with 6 sites of care and 1 medical group
Dr. Carter's primary practice is Parkland Medical Center in Derry, New Hampshire, part of HCA Healthcare. Dr. Carter is also affiliated with Southern New Hampshire Medical Center. The medical group on file is Core Physicians. Dmand AI also links Dr. Carter to 1 more hospital, 2 home health agencies and 1 physician office, 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. William P. Carter III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Carter practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Parkland Medical Center | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William P. Carter III is one of 298 emergency medicine physicians in New Hampshire
Emergency medicine is Dr. Carter's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Carter is licensed in New Hampshire.
Specialties and state licenses
- Emergency medicine, New HampshirePrimary
Emergency medicine physicians near Dr. Carter
Counts of emergency medicine 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. William P. Carter III billed Medicare for 721 services in 2024
CMS data shows 721 Medicare services from Dr. Carter across 6 procedure codes in 2024, for 145 Medicare patients. Medicare paid $32,801 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Carter's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4982024: 41616%
- Surgery
- 2023: 2132024: 17518%
- Tests and treatments
- 2023: 952024: 13037%
Dr. Carter compared with the New Hampshire median for emergency medicine physicians, 2024
- Dr. Carter
- New Hampshire median
- Medicare services
- 721vs 2393.0 times
- Medicare patients
- 145vs 26645% below
- Part D claims
- 55vs 4425% above
Medians across 328 emergency medicine physicians in New Hampshire with Dmand AI profiles that report each measure.
Dr. Carter'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Carter and other emergency medicine physicians in New Hampshire.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William P. Carter III treated 145 Medicare patients in 2024, average age 73
CMS counts 145 Medicare patients who saw Dr. Carter in 2024. The largest group is 75 to 84, with 53 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 2.16, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Carter's median patient age at 76, with 42% women.
Dr. Carter's Medicare patients by age, 2024
Dr. Carter's Medicare patients by sex, 2024
- Women7954%
- Men6646%
Chronic conditions among Dr. Carter's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Diabetes46%
- Ischemic heart disease41%
- Chronic kidney disease40%
- Heart failure39%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Carter's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William P. Carter III wrote 63 Medicare Part D claims in 2024
In 2024, Dr. Carter wrote 63 Medicare Part D claims for 42 patients. 97% of them were for generic drugs. CMS names the drug for 55 of them, across 4 drugs with 11 or more claims each, at $625 in total drug cost. In 2022, CMS named 135 claims across 7 drugs.
Dr. Carter's Part D claims by kind of drug, 2024
- Generic61 claims97%
- Brand-name and other2 claims3%
Dr. Carter's most prescribed drugs by claims, 2023
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. Carter's Part D claims, 2024
- Antibiotics54%34 of 63 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1352023: 5559%
Drugs named by CMS: 4 in 2023, 7 in 2022.
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. William P. Carter III ranks in the 98th percentile for removal of tissue in Medicare
Dr. Carter accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 678 procedures of removal of tissue by Dr. Carter, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Carter ranks in Medicare procedure volume
- Removal of tissue
- 98th percentile678 procedures
- Removal of skin lesions
- 73rd percentile60 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Skin biopsy: 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. William P. Carter III received $232 in industry payments from 2017 to 2025
CMS Open Payments shows 7 general payments to Dr. Carter from 4 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. MIMEDX Group, Inc. paid the most, $99.
General payments to Dr. Carter by program year, 2017 to 2025
Companies that paid Dr. Carter the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William P. Carter III'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 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) |
| 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. William P. Carter III
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. William P. Carter III's NPI number?
Dr. William P. Carter III's NPI number is 1083795116. It was assigned on October 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William P. Carter III?
Dr. William P. Carter III is an emergency medicine physician in Derry, New Hampshire. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. William P. Carter III practice?
Dr. Carter practices at 1 Parkland Drive, Derry, NH 03038. Dr. Carter's primary practice is Parkland Medical Center in Derry, New Hampshire, part of HCA Healthcare. Dmand AI also links Dr. Carter to 1 hospital, 2 home health agencies and 1 physician office.
What is Dr. William P. Carter III's office phone number?
The practice phone on file for Dr. Carter is (603) 421-2100.
What is Dr. William P. Carter III's medical license number?
Dr. Carter holds New Hampshire license 13946.
Which hospitals is Dr. William P. Carter III affiliated with?
Dr. Carter practices at Parkland Medical Center in Derry, New Hampshire. Dr. Carter is also affiliated with Southern New Hampshire Medical Center. Dmand AI links Dr. Carter to 1 more hospital.
What medical group is Dr. William P. Carter III part of?
Dr. Carter is linked to Core Physicians.
Does Dr. William P. Carter III accept Medicare?
Yes. CMS data shows Dr. Carter billed Medicare for 721 services in 2024, and Dr. Carter accepts Medicare assignment.
How many Medicare patients does Dr. William P. Carter III see?
CMS counts 145 Medicare patients who saw Dr. Carter in 2024, with an average age of 73.
What services does Dr. William P. Carter III bill to Medicare?
In 2024, Dr. Carter's most billed Medicare services were office visit, established patient (99213), surgery: skin and soft tissue (11042) and physical therapy and rehabilitation (97597).
Show 3 more questionsShow fewer questions
What drugs does Dr. William P. Carter III prescribe most?
In 2023 Medicare Part D data, Dr. Carter's most prescribed drugs by claims were Prednisone, Amoxicillin-Clavulanate Potass and Cefdinir.
Has Dr. William P. Carter III received payments from drug or device companies?
CMS Open Payments shows $232 in general payments to Dr. Carter from 4 companies from 2017 to 2025. The largest total came from MIMEDX Group, Inc.
How long has Dr. William P. Carter III been practicing?
Dr. Carter graduated from medical school in 2005, 21 years ago.
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