William Wai-Ynn Loong, PA-C
- Medicare patients, 2024
- 216
- Part D claims, 2024
- 5,013
- MIPS score, 2024
- 83
- Hospital affiliations
- 2
- Industry payments
- $15
- Practice address
- 450 Northside Cherokee Boulevard, Canton, GA 30115
- Practice phone
- Call (770) 244-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find William Loong'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 Wai-Ynn Loong is a physician assistant in Canton, Georgia
William Loong practices at Northside Hospital Cherokee in Canton, Georgia, part of Northside Hospital.
William Loong's NPI, 1326415563, was assigned on August 24, 2015. William Loong holds Georgia license 8082.
- NPI
- 1326415563NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022305077
- NPI enumeration date
- August 24, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (770) 244-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Wai-Ynn Loong practices at Northside Hospital Cherokee in Canton, Georgia
William Loong's primary practice is Northside Hospital Cherokee, at 450 Northside Cherokee Boulevard, Canton, GA 30115 in Cherokee County. The practice phone is (770) 244-1000.
- Northside Hospital Cherokee450 Northside Cherokee Boulevard, Canton, GA 30115 · Cherokee CountyPhone(770) 244-1000
Source: Dmand AI Affiliation Data
William Wai-Ynn Loong is affiliated with 4 sites of care and 3 medical groups
William Loong's primary practice is Northside Hospital Cherokee in Canton, Georgia, part of Northside Hospital. William Loong is also affiliated with Piedmont Mountainside Hospital. The medical group on file is Wellstar Medical Group. Dmand AI also links William Loong to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Wai-Ynn Loong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Loong practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northside Hospital Cherokee | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northside Hospital and 6.2K+ hospitals, with verified contacts in the same login.
William Wai-Ynn Loong is one of 3,653 physician assistants in Georgia
Physician assistant is William Loong's primary specialty in the NPI Registry, under taxonomy code 363A00000X. William Loong is licensed in Georgia.
Specialties and state licenses
- Physician assistant, GeorgiaPrimary
Physician assistants near William Loong
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 Wai-Ynn Loong treated 216 Medicare patients in 2024, average age 77
CMS counts 216 Medicare patients who saw William Loong in 2024. The largest group is 75 to 84, with 91 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.71, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts William Loong's median patient age at 70, with 45% women.
William Loong's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Loong's Medicare patients by sex, 2024
- Women10147%
- Men11553%
Chronic conditions among William Loong's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease65%
- Arthritis51%
- Atrial fibrillation44%
- Heart failure44%
- Diabetes38%
- Chronic kidney disease36%
Share of Medicare patients with each condition. A patient can have several.
William Loong'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
- Women45%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Wai-Ynn Loong wrote 5,013 Medicare Part D claims in 2024
In 2024, William Loong wrote 5,013 Medicare Part D claims for 703 patients. 82% of them were for generic drugs.
William Loong's Part D claims by kind of drug, 2024
- Generic4,088 claims82%
- Brand-name925 claims18%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
William Wai-Ynn Loong scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for William Loong for performance year 2024, reported as part of a group. William Loong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
William Loong's MIPS scores, performance year 2024
- 83of 100Final score
- 65.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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William Wai-Ynn Loong received $15 in industry payments in 2025
CMS Open Payments shows 1 general payment to William Loong from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) paid the most, $15.
Companies that paid William Loong 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 Wai-Ynn Loong'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 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)Clinician Public Reporting: Overall MIPS Performance (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 Wai-Ynn Loong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William Wai-Ynn Loong's NPI number?
William Wai-Ynn Loong's NPI number is 1326415563. It was assigned on August 24, 2015, and it is active in the NPI Registry.
What does William Wai-Ynn Loong specialize in?
William Wai-Ynn Loong is a physician assistant in Canton, Georgia. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does William Wai-Ynn Loong practice?
William Loong practices at 450 Northside Cherokee Boulevard, Canton, GA 30115. William Loong's primary practice is Northside Hospital Cherokee in Canton, Georgia, part of Northside Hospital. Dmand AI also links William Loong to 2 group practices and clinics and 2 medical groups.
What is William Wai-Ynn Loong's office phone number?
The practice phone on file for William Loong is (770) 244-1000.
What is William Wai-Ynn Loong's medical license number?
William Loong holds Georgia license 8082.
Which hospitals is William Wai-Ynn Loong affiliated with?
William Loong practices at Northside Hospital Cherokee in Canton, Georgia. William Loong is also affiliated with Piedmont Mountainside Hospital.
What medical group is William Wai-Ynn Loong part of?
William Loong is linked to Wellstar Medical Group. Dmand AI links William Loong to 2 more medical groups.
Does William Wai-Ynn Loong accept Medicare?
Yes. CMS lists William Loong as accepting Medicare assignment.
What is William Wai-Ynn Loong's MIPS score?
William Loong's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
How many Medicare patients does William Wai-Ynn Loong see?
CMS counts 216 Medicare patients who saw William Loong in 2024, with an average age of 77.
Has William Wai-Ynn Loong received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to William Loong from 1 company from 2025 to 2025. The largest total came from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
How long has William Wai-Ynn Loong been practicing?
William Loong graduated from medical school in 2015, 11 years ago.
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