William F. Groff, D.O.
Dermatology Physician · Lancaster, PA
William F. Groff, D.O. is a dermatology physician with a practice address in Lancaster, Pennsylvania, and NPI 1194753947, issued on Jun 29, 2006. Check the license (Pennsylvania OS013646, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William F. Groff
- Credential
- D.O.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- OS013646 PA
Self-reported in NPPES; status is on the state search - Practice location
- 203 N Lime St, Lancaster, PA 17602
- Phone
- (717) 392-6267
- Enumerated
- Jun 29, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 203 N Lime St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marena FaresPhysician Assistant1497264691
- George Groleau, M.D.Dermatology Physician1285678664
- Patricia Groleau, M.D.Dermatology Physician1982970893
- Richard Herschaft, M.D.Dermatology Physician1376512053
- Kara Kreider, PA-CPhysician Assistant1720679327
- John Legere, D.O.Dermatology Physician1013951276
Verify William F. Groff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS013646Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average dermatology physician in 2024
115 Medicare Part D claims for 47 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
Most prescribed
- Valacyclovir40 claims
- Doxycycline Monohydrate39 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: $446.39
23 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Dermatology Physician providers in Pennsylvania
There are 681 dermatology physician records in Pennsylvania.
Other dermatology physician records in Pennsylvania
- Debra Abell, MDWexford, PA1558442525
- Barry Abraham, MDPenn Valley, PA1811072606
- Nina Abraham, MDHaverford, PA1255593422
- Katrina Abuabara, MDPhiladelphia, PA1558689216
- David Adams, MDHershey, PA1215991427
- Saira Agarwala, MDPhiladelphia, PA1760062228
- George Ainsworth, MDWest Lawn, PA1851397814
- Oleg Akilov, M.D., PH.D.Pittsburgh, PA1316274590
- Ali Alajmi, MD , FRCPC , FAADArdmore, PA1760172522
- Christian Albornoz, MDChesterbrook, PA1962997262
Common questions
What is William F. Groff, D.O.'s NPI number?
William F. Groff, D.O.'s National Provider Identifier (NPI) is 1194753947, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William F. Groff, D.O. located?
The NPPES record lists a practice address at 203 N Lime St, Lancaster, PA, 17602. Phone: (717) 392-6267. Providers update this record themselves, so call before visiting.
How can I verify William F. Groff, D.O.'s license?
NPPES lists Pennsylvania license number OS013646, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William F. Groff, D.O. prescribe under Medicare Part D?
In 2024, William F. Groff, D.O. had 115 Medicare Part D claims for 47 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.