William Rataphon Chamnin, PA-C
- Medicare patients, 2024
- 91
- Part D claims, 2024
- 657
- Hospital affiliations
- 2
- Industry payments
- $64
- Medical groups
- 2
- Practice address
- 2131 South 17th Street, Wilmington, NC 28402
- Practice phone
- Call (910) 667-5619
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
New Hanover Regional Medical Center Rehabilitation - Unit
Acute Care Hospital-Unit · Wilmington, North Carolina
Find William Chamnin'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.
William Rataphon Chamnin is a physician assistant in Wilmington, North Carolina
William Chamnin practices at New Hanover Regional Medical Center Rehabilitation - Unit in Wilmington, North Carolina.
William Chamnin's NPI, 1376664524, was assigned on April 3, 2007. William Chamnin holds North Carolina license 0010-00845.
- NPI
- 1376664524NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931209962
- NPI enumeration date
- April 3, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (910) 667-5619
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Rataphon Chamnin practices at New Hanover Regional Medical Center Rehabilitation - Unit in Wilmington, North Carolina
William Chamnin's primary practice is New Hanover Regional Medical Center Rehabilitation - Unit, at 2131 South 17th Street, Wilmington, NC 28402 in New Hanover County. The practice phone is (910) 667-5619.
- New Hanover Regional Medical Center Rehabilitation - Unit2131 South 17th Street, Wilmington, NC 28402 · New Hanover CountyPhone(910) 667-5619
Source: Dmand AI Affiliation Data
William Rataphon Chamnin is affiliated with 6 sites of care and 2 medical groups
William Chamnin's primary practice is New Hanover Regional Medical Center Rehabilitation - Unit in Wilmington, North Carolina. William Chamnin is also affiliated with Novant Health New Hanover Regional Medical Center. The medical group on file is Novant Health Heart & Vascular Institute, Wilmington Main. Dmand AI also links William Chamnin to 2 more group practices and clinics, 1 behavioral health center, 1 breast imaging center and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at William Rataphon Chamnin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Chamnin practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| New Hanover Regional Medical Center Rehabilitation - Unit | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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William Rataphon Chamnin is one of 7,765 physician assistants in North Carolina
Physician assistant is William Chamnin's primary specialty in the NPI Registry, under taxonomy code 363A00000X. William Chamnin is licensed in North Carolina.
Specialties and state licenses
- Physician assistant, North CarolinaPrimary
Physician assistants near William Chamnin
Counts of physician assistants 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
William Rataphon Chamnin treated 91 Medicare patients in 2024, average age 75
CMS counts 91 Medicare patients who saw William Chamnin in 2024. The largest group is 65 to 74, with 41 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Chamnin's median patient age at 69, with 29% women.
William Chamnin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Chamnin's Medicare patients by sex, 2024
- Women2224%
- Men6976%
Chronic conditions among William Chamnin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Atrial fibrillation66%
- Diabetes52%
- Heart failure51%
- Chronic kidney disease44%
- Arthritis43%
Share of Medicare patients with each condition. A patient can have several.
William Chamnin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women29%
- Men69%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Rataphon Chamnin wrote 657 Medicare Part D claims in 2024
In 2024, William Chamnin wrote 657 Medicare Part D claims for 139 patients. 91% of them were for generic drugs.
William Chamnin's Part D claims by kind of drug, 2024
- Generic599 claims91%
- Brand-name58 claims9%
Drug classes CMS tracks in William Chamnin's Part D claims, 2024
- Opioids13%88 of 657 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How William Rataphon Chamnin takes part in Medicare
William Chamnin 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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William Rataphon Chamnin received $64 in industry payments in 2025
CMS Open Payments shows 3 general payments to William Chamnin from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Abiomed paid the most, $33.
Companies that paid William Chamnin the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for William Rataphon Chamnin'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 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 (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 William Rataphon Chamnin
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What is William Rataphon Chamnin's NPI number?
William Rataphon Chamnin's NPI number is 1376664524. It was assigned on April 3, 2007, and it is active in the NPI Registry.
What does William Rataphon Chamnin specialize in?
William Rataphon Chamnin is a physician assistant in Wilmington, North Carolina. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does William Rataphon Chamnin practice?
William Chamnin practices at 2131 South 17th Street, Wilmington, NC 28402. William Chamnin's primary practice is New Hanover Regional Medical Center Rehabilitation - Unit in Wilmington, North Carolina. Dmand AI also links William Chamnin to 2 group practices and clinics, 1 behavioral health center, 1 breast imaging center and 1 medical group.
What is William Rataphon Chamnin's office phone number?
The practice phone on file for William Chamnin is (910) 667-5619.
What is William Rataphon Chamnin's medical license number?
William Chamnin holds North Carolina license 0010-00845.
Which hospitals is William Rataphon Chamnin affiliated with?
William Chamnin is affiliated with Novant Health New Hanover Regional Medical Center. Dmand AI links William Chamnin to 1 more hospital.
What medical group is William Rataphon Chamnin part of?
William Chamnin is linked to Novant Health Heart & Vascular Institute, Wilmington Main. Dmand AI links William Chamnin to 1 more medical group.
Does William Rataphon Chamnin accept Medicare?
Yes. CMS lists William Chamnin as accepting Medicare assignment.
How many Medicare patients does William Rataphon Chamnin see?
CMS counts 91 Medicare patients who saw William Chamnin in 2024, with an average age of 75.
Has William Rataphon Chamnin received payments from drug or device companies?
CMS Open Payments shows $64 in general payments to William Chamnin from 3 companies from 2025 to 2025. The largest total came from Abiomed.
How long has William Rataphon Chamnin been practicing?
William Chamnin graduated from medical school in 2006, 20 years ago.
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