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

Gregory J Streff, DO

Individual provider Pulmonary Disease Physician · NPI 1558314005

Gregory J Streff, DO is a Pulmonary Disease Physician in Grand Blanc, Michigan. Licensed in Michigan. Registered with an NPI since 2006.

Licensed in
MI
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.

See every abbreviation used in this directory →

Practice location Address checks out

9450 S Saginaw Rd Ste E
Grand Blanc, MI 48439-8206
Phone: (810) 695-4000
Fax: (810) 695-4055
Show map & directions

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

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 5101008684 (MI)

Record details

NPI number1558314005
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 18, 2006
Last updated in NPPESJuly 13, 2026
Mailing address9450 S Saginaw Rd, Suite E, Grand Blanc, MI 48439-8206

Other providers in Grand Blanc