William Anthony Messer, M.D.
Family Medicine Physician · Greenville, SC
William Anthony Messer, M.D. is a family medicine physician with a practice address in Greenville, South Carolina, and NPI 1700814985, issued on Jun 28, 2006. Check the license (South Carolina 18865, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Anthony Messer
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 18865 SC
Self-reported in NPPES; status is on the state search - Practice location
- 124 Verdae Blvd Ste 204, Greenville, SC 29607
- Phone
- (864) 315-1300
- Enumerated
- Jun 28, 2006
- Record last updated
- Apr 24, 2024
- Medicare enrollment
- Enrolled (PECOS I20071217000546); may accept Medicare assignment
- Medical or professional school
- University Of South Carolina School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,700 in South Carolina → Look up another NPI →
Also registered at 124 Verdae Blvd Ste 204
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danielle Andrews, NPWomen's Health Nurse Practitioner1245557768
- Daniel Brake, M.D.Family Medicine Physician1861432387
- Jana Morse, M.D.Internal Medicine Physician1689763757
- Celeste Sitton, FNP-CFamily Nurse Practitioner1558845321
- Karen Watson, M.D.Internal Medicine Physician1760423909
Verify William Anthony Messer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 18865Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average family medicine physician in 2024
4,605 Medicare Part D claims for 574 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 80 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium271 claims
- Atorvastatin Calcium256 claims
- Levothyroxine Sodium183 claims
- Omeprazole153 claims
- Amlodipine Besylate132 claims
- Lisinopril120 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $551.18
28 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Partnermd South Carolina PCGreenville, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Anthony Messer among 2,700 family medicine physician records in South Carolina
William Anthony Messer, M.D. is one of 2,700 family medicine physician records with a practice address in South Carolina. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1995 · median 2006 among the 1,638 with a school on file
- Record last updated2024 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
217 family medicine physician records list a practice address in Greenville
They are 217 of the 10,264 NPPES records with a practice address in Greenville, and 2,700 family medicine physician records in South Carolina.
All 2,700 in South Carolina → Every provider in Greenville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Daniel Brake, M.D.Greenville, SC 296071861432387
- Louis Browne, M.D.Greenville, SC 296071891739504
- Tonya Edwards, MDGreenville, SC 296071538165865
- Harlicia Farley, MDGreenville, SC 296071154381036
- Lisa ForgioneGreenville, SC 296071881645562
- James Fuson, M.D.Greenville, SC 296071275571226
- Michael Harrah, M.D.Greenville, SC 296071487698981
- Dana Lewis, D.O.Greenville, SC 296071396717013
Common questions
What is William Anthony Messer, M.D.'s NPI number?
William Anthony Messer, M.D.'s National Provider Identifier (NPI) is 1700814985, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Anthony Messer, M.D. located?
The NPPES record lists a practice address at 124 Verdae Blvd Ste 204, Greenville, SC, 29607. Phone: (864) 315-1300. Providers update this record themselves, so call before visiting.
How can I verify William Anthony Messer, M.D.'s license?
NPPES lists South Carolina license number 18865, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Anthony Messer, M.D. prescribe under Medicare Part D?
In 2024, William Anthony Messer, M.D. had 4,605 Medicare Part D claims for 574 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.