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

Dr. Daniel Adam Greninger, MD

Individual provider Ophthalmology Physician · NPI 1861666059

Dr. Daniel Adam Greninger, MD is an Ophthalmology in Antioch, California. Graduated from Js Weill Medical College, Cornell University in 2008, 18 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in California and Oregon.

Years since qualifying
18
Trained at
Js Weill Medical College, Cornell University
Licensed in
CA, OR
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4501 Sand Creek Rd
Antioch, CA 94531-8687
Phone: (925) 813-3349
Fax: (925) 813-3341
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence A109166 (CA)
Ophthalmology Physician Taxonomy 207W00000X · Licence MD157095 (OR)

Record details

NPI number1861666059
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 17, 2008
Last updated in NPPESJanuary 13, 2022
Certification dateJanuary 13, 2022
Mailing address4501 Sand Creek Rd, Antioch, CA 94531-8687

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolJS WEILL MEDICAL COLLEGE, CORNELL UNIVERSITY
Graduated 2008 (18 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Antioch