William G. Johnston, M.D.
Urology Physician · Hyannis, MA
William G. Johnston, M.D. is a urology physician with a practice address in Hyannis, Massachusetts, and NPI 1568449320, issued on Dec 22, 2005. Check the license (Massachusetts 38955, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William G. Johnston
- Credential
- M.D.
- Primary taxonomy
- Urology Physician 208800000X
- License number
- 38955 MA
Self-reported in NPPES; status is on the state search - Practice location
- 110 Main St, Hyannis, MA 02601
- Phone
- (508) 771-9550
- Enumerated
- Dec 22, 2005
- Record last updated
- Nov 2, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (508) 790-9304
- Medicaid ID
- 2045133 MA
- Entity
- Type 1 · individual
Also registered at 110 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raquel Amoldoni, CRNACertified Registered Nurse Anesthetist1740511708
- Ailish BloomerClinical Social Worker1205796174
- Shealan Gagnon, APRNPsychiatric/Mental Health Nurse Practitioner1376215186
- Elizabeth Garcia, MSWSocial Worker1013898998
- Evangelos Geraniotis, M.D.Urology Physician1174500953
- Robert Hartnett, M.D.Urology Physician1295712925
Verify William G. Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 38955Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Urology Physician providers in Massachusetts
There are 377 urology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other urology physician records in Massachusetts
- Joseph Adolph, MDMarlboro, MA1700883535
- Abdulsalam Albalawi, MDChestnut Hill, MA1487087375
- Mehrdad AlemozaffarBoston, MA1376749861
- Richard Alexander, M.D.Greenfield, MA1497762884
- Farshid Alizadeh, MDBrighton, MA1619608577
- Christopher Allard, MDBoston, MA1629486022
- Richard Altman, MDChelmsford, MA1134199748
- Joshua Altschuler, MDWorcester, MA1003471962
- Kevin Asher, MDSpringfield, MA1578733457
- Philip Ayvazian, MDWorcester, MA1487654984
Common questions
What is William G. Johnston, M.D.'s NPI number?
William G. Johnston, M.D.'s National Provider Identifier (NPI) is 1568449320, issued on Dec 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William G. Johnston, M.D. located?
The NPPES record lists a practice address at 110 Main St, Hyannis, MA, 02601. Phone: (508) 771-9550. Providers update this record themselves, so call before visiting.
How can I verify William G. Johnston, M.D.'s license?
NPPES lists Massachusetts license number 38955, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.