Dr. William Anthony Messer, MD
- Medicare services, 2024
- 690
- Medicare patients, 2024
- 196
- Part D claims, 2024
- 4,605
- Hospital affiliations
- 6
- Industry payments
- $7,533
- Practice address
- 701 Grove Road, Greenville, SC 29605
- Practice phone
- Call (864) 455-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Messer'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. William Anthony Messer is a family medicine physician in Greenville, South Carolina
Dr. Messer practices at Prisma Health Greenville Memorial Hospital in Greenville, South Carolina, part of Prisma Health.
Dr. Messer's NPI, 1700814985, was assigned on June 28, 2006. Dr. Messer graduated from University of South Carolina School of Medicine in 1995. Dr. Messer holds South Carolina license 18865.
- NPI
- 1700814985NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991895773
- NPI enumeration date
- June 28, 2006
- NPI status
- Active
- Practice phone
- (864) 455-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William Anthony Messer practices at Prisma Health Greenville Memorial Hospital in Greenville, South Carolina
Dr. Messer's primary practice is Prisma Health Greenville Memorial Hospital, at 701 Grove Road, Greenville, SC 29605 in Greenville County. The practice phone is (864) 455-7000.
- Prisma Health Greenville Memorial Hospital701 Grove Road, Greenville, SC 29605 · Greenville CountyPhone(864) 455-7000
Source: Dmand AI Affiliation Data
Dr. William Anthony Messer is affiliated with 8 sites of care and 1 medical group
Dr. Messer's primary practice is Prisma Health Greenville Memorial Hospital in Greenville, South Carolina, part of Prisma Health. Dr. Messer is also affiliated with Bon Secours St. Francis Downtown. The medical group on file is PartnerMD. Dmand AI also links Dr. Messer to 4 more hospitals, 1 group practice or clinic and 1 home health agency, 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 Anthony Messer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Messer practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prisma Health Greenville Memorial Hospital | Available with a free account |
| +7 more affiliated sites | 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 Prisma Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Anthony Messer is one of 2,356 family medicine physicians in South Carolina
Family medicine is Dr. Messer's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Messer is licensed in South Carolina.
Specialties and state licenses
- Family medicine, South CarolinaPrimary
Family medicine physicians near Dr. Messer
Counts of family 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 Anthony Messer billed Medicare for 690 services in 2024
CMS data shows 690 Medicare services from Dr. Messer across 17 procedure codes in 2024, for 196 Medicare patients. Medicare paid $46,952 for them. Every service was in an office.
Dr. Messer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7322024: 37848%
- Other services
- 2023: 3422024: 17449%
- Tests and treatments
- 2023: 1472024: 6456%
- Surgery
- 2023: 4882024: 4192%
- Lab and pathology
- 2023: 772024: 3357%
Dr. Messer compared with the South Carolina median for family medicine physicians, 2024
- Dr. Messer
- South Carolina median
- Medicare services
- 690vs 7447% below
- Medicare patients
- 196vs 23216% below
- Part D claims
- 3,893vs 1,0233.8 times
Medians across 2,295 family medicine physicians in South Carolina with Dmand AI profiles that report each measure.
Dr. Messer'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. Messer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Messer and other family medicine physicians in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Anthony Messer treated 196 Medicare patients in 2024, average age 76
CMS counts 196 Medicare patients who saw Dr. Messer in 2024. The largest group is 65 to 74, with 88 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Messer's median patient age at 66, with 46% women.
Dr. Messer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Messer's Medicare patients by sex, 2024
- Women8945%
- Men10755%
Chronic conditions among Dr. Messer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis44%
- Ischemic heart disease32%
- Diabetes31%
- Chronic kidney disease29%
- Anxiety27%
- Mood disorders21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Messer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Anthony Messer wrote 4,605 Medicare Part D claims in 2024
In 2024, Dr. Messer wrote 4,605 Medicare Part D claims for 574 patients. 88% of them were for generic drugs. CMS names the drug for 3,893 of them, across 97 drugs with 11 or more claims each, at $341,212 in total drug cost. In 2023, CMS named 6,796 claims across 135 drugs.
Dr. Messer's Part D claims by kind of drug, 2024
- Generic4,049 claims88%
- Brand-name523 claims11%
- Other33 claims1%
Dr. Messer'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.
Drug classes CMS tracks in Dr. Messer's Part D claims, 2024
- Opioids2%80 of 4,605 claims
- Antibiotics3%116 of 4,605 claims
- Antipsychotics, patients 65 and over0%23 of 4,605 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,7962024: 3,89343%
Drugs named by CMS: 97 in 2024, 135 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
How Dr. William Anthony Messer takes part in Medicare
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Source: Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. William Anthony Messer received $7,533 in industry payments from 2016 to 2025
CMS Open Payments shows 442 general payments to Dr. Messer from 57 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,243.
General payments to Dr. Messer by program year, 2016 to 2025
General payments to Dr. Messer by kind, 2016 to 2025
- Food and beverage$7,48699%
- Education$481%
Companies that paid Dr. Messer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Anthony Messer graduated from University of South Carolina School of Medicine
Dr. Messer graduated from University of South Carolina School of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Anthony Messer'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 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. William Anthony Messer
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 Anthony Messer's NPI number?
Dr. William Anthony Messer's NPI number is 1700814985. It was assigned on June 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Anthony Messer?
Dr. William Anthony Messer is a family medicine physician in Greenville, South Carolina. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. William Anthony Messer practice?
Dr. Messer practices at 701 Grove Road, Greenville, SC 29605. Dr. Messer's primary practice is Prisma Health Greenville Memorial Hospital in Greenville, South Carolina, part of Prisma Health. Dmand AI also links Dr. Messer to 4 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. William Anthony Messer's office phone number?
The practice phone on file for Dr. Messer is (864) 455-7000.
What is Dr. William Anthony Messer's medical license number?
Dr. Messer holds South Carolina license 18865.
Which hospitals is Dr. William Anthony Messer affiliated with?
Dr. Messer practices at Prisma Health Greenville Memorial Hospital in Greenville, South Carolina. Dr. Messer is also affiliated with Bon Secours St. Francis Downtown. Dmand AI links Dr. Messer to 4 more hospitals.
What medical group is Dr. William Anthony Messer part of?
Dr. Messer is linked to PartnerMD.
Does Dr. William Anthony Messer accept Medicare?
Yes. CMS data shows Dr. Messer billed Medicare for 690 services in 2024.
How many Medicare patients does Dr. William Anthony Messer see?
CMS counts 196 Medicare patients who saw Dr. Messer in 2024, with an average age of 76.
What services does Dr. William Anthony Messer bill to Medicare?
In 2024, Dr. Messer's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
Show 4 more questionsShow fewer questions
Where did Dr. William Anthony Messer go to medical school?
Dr. Messer graduated from University of South Carolina School of Medicine in 1995.
What drugs does Dr. William Anthony Messer prescribe most?
In 2024 Medicare Part D data, Dr. Messer's most prescribed drugs by claims were Rosuvastatin Calcium, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. William Anthony Messer received payments from drug or device companies?
CMS Open Payments shows $7,533 in general payments to Dr. Messer from 57 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. William Anthony Messer been practicing?
Dr. Messer graduated from medical school in 1995, 31 years ago.
Selling to family medicine practices?
See family medicine physicians in South Carolina by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card