Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Greg A Butterworth, OD

Individual provider Optometrist · NPI 1336116979

Greg A Butterworth, OD is an Optometry in Havre de Grace, Maryland. Graduated from Pennsylvania College of Optometry in 1999, 27 years ago. Practices with Katzen Medical Associates PC, a 24-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
27
Trained at
Pennsylvania College of Optometry
Licensed in
MD
In the registry since
2006
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

920 Revolution St
Havre de Grace, MD 21078-3748
Phone: (410) 939-2200
Fax: (410) 939-5980
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence TA1619 (MD)

Record details

NPI number1336116979
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedMarch 2, 2006
Last updated in NPPESNovember 2, 2021
Certification dateNovember 2, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolPENNSYLVANIA COLLEGE OF OPTOMETRY
Graduated 1999 (27 years in practice)
Group practice Katzen Medical Associates Pc — 24 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Havre de Grace