Physician Profile
Donald J. Hennessy, M.D.
Unclaimed ProfileAbout Dr. Hennessy
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Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (262) 377-6933
- Email not available
Practice Locations
N143W6515 PIONEER RD
Cedarburg, WI 53012
W180N7950 Town Hall Rd
Menomonee Falls, WI 53051
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What kind of doctor is Donald J. Hennessy?
Donald J. Hennessy is an internist in Cedarburg, WI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is Donald J. Hennessy's address?
Donald J. Hennessy is listed at N143W6515 Pioneer Rd, Cedarburg, WI 53012. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Donald J. Hennessy?
The number on file is (262) 377-6933. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Donald J. Hennessy?
Donald J. Hennessy's National Provider Identifier is 1811960495. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Donald J. Hennessy have?
Donald J. Hennessy has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Is Donald J. Hennessy's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Donald J. Hennessy. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.