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

Dr. James A Groff, DO

Individual provider Nephrology Physician · NPI 1912959107

Dr. James A Groff, DO is an Internal Medicine in Lancaster, Pennsylvania. Graduated from Philadelphia College of Osteopathic Medicine in 1991, 35 years ago. Practices with Nephrology Associates of Lancaster, Ltd, a 20-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
35
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
PA
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

2112 Harrisburg Pike Ste 312
Lancaster, PA 17604-3200
Phone: (717) 544-3232
Fax: (717) 544-3233
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence OS-007680-L (PA)

Record details

NPI number1912959107
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 16, 2006
Last updated in NPPESDecember 2, 2010
Mailing address2112 Harrisburg Pike, Suite 312, Lancaster, PA 17604-3200

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesNEUROLOGY
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1991 (35 years in practice)
Group practice Nephrology Associates Of Lancaster, Ltd — 20 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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