NPPES file of Aug 9, 2026

William G. Irwin, MD

Dermatology Physician · Warner Robins, GA

William G. Irwin, MD is a dermatology physician with a practice address in Warner Robins, Georgia, and NPI 1316931017, issued on Sep 8, 2005. Check the license (Georgia 012172, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1316931017
Name
William G. Irwin
Credential
MD
Primary taxonomy
Dermatology Physician 207N00000X
License number
012172 GA
Self-reported in NPPES; status is on the state search
Practice location
212 Hospital Dr, Warner Robins, GA 31088
Phone
(478) 922-9281
Enumerated
Sep 8, 2005
Record last updated
Apr 23, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(478) 328-0438
Medicaid ID
0007629024 GA
Medicare enrollment
Enrolled (PECOS I20041109000990); accepts Medicare assignment
Medical or professional school
Indiana University School Of Medicine, 1967
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 212 Hospital Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Richard BullingtonHearing Instrument Specialist1942515622
  2. Justin Castleberry, HISHearing Instrument Specialist1972928992
  3. Darryl Hodson, MDDermatology Physician1871583351
  4. Frederick Jennart, DONeurology Physician1821001025
  5. Kelly Murray, NPFamily Nurse Practitioner1821388836
  6. James Spivey, MDOrthopaedic Surgery Physician1730250044

Verify William G. Irwin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersGeorgia Composite Medical Board
    Search for license 012172
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Georgia license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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95% fewer Medicare Part D claims than the average dermatology physician in 2024

40 Medicare Part D claims for 12 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.

  1. William Irwin40
  2. Specialty average797

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: $42.91

2 payments; by number, the most common kind was food and beverage; the largest payer was Dermavant Sciences, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Irwin$42.91
  2. Specialty average$8,544.61

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

  1. Georgia Dermatology And Skin Cancer Center, LLCTifton, GA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William G. Irwin among 349 dermatology physician records in Georgia

William G. Irwin, MD is one of 349 dermatology physician records with a practice address in Georgia. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 86% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated1967 · median 2006 among the 260 with a school on file
  • Record last updated2015 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in Georgia

There are 349 dermatology physician records in Georgia.

The 8 dermatology physician records with the nearest ZIP codes

  1. Darryl Hodson, MDWarner Robins, GA 310881871583351
  2. Kristie McCann, PA-CWarner Robins, GA 310881679137392
  3. Vickie Brown, MDMilledgeville, GA 310611952398273
  4. Charles Harris, M.D.Forsyth, GA 310291073590410
  5. Jason Arnold, M.D.Dublin, GA 310211558355693
  6. Amy Blake, MDDublin, GA 310211386148708
  7. Kristin Davis, PA-CDublin, GA 310211285364109
  8. Michael Sharkey, MDDublin, GA 310211417941964

Common questions

What is William G. Irwin, MD's NPI number?

William G. Irwin, MD's National Provider Identifier (NPI) is 1316931017, issued on Sep 8, 2005. An NPI identifies a provider in billing; it is not a license.

Where is William G. Irwin, MD located?

The NPPES record lists a practice address at 212 Hospital Dr, Warner Robins, GA, 31088. Phone: (478) 922-9281. Providers update this record themselves, so call before visiting.

How can I verify William G. Irwin, MD's license?

NPPES lists Georgia license number 012172, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William G. Irwin, MD prescribe under Medicare Part D?

In 2024, William G. Irwin, MD had 40 Medicare Part D claims for 12 beneficiaries; the average among dermatology physician prescribers was 797. 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.