DR. DANIEL ADAM GRENINGER M.D.
NPI 1861666059
Ophthalmology in Antioch, CA

Q: What is Daniel Greninger's NPI number?

The NPI number for Daniel Greninger is 1861666059. It was assigned to this individual provider in the NPPES registry on April 17, 2008.

Q: What is Daniel Greninger's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Daniel Greninger was last updated on January 13, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 17, 2008PECOS Enrolled

4501 SAND CREEK RD, ANTIOCH, CA 94531(925) 813-3349(925) 813-3341 Get Directions Write a Review

NPPES record last updated: January 13, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Daniel Adam Greninger M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DANIEL ADAM GRENINGER M.D. (NPI 1861666059) is an individual ophthalmology provider in Antioch, California, licensed in California (A109166) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1861666059

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameDR. DANIEL ADAM GRENINGERCredential: M.D.

Location Address4501 SAND CREEK RDAntioch, CA 94531-8687

Mailing Address4501 Sand Creek RdAntioch, CA 94531-8687 · (925) 813-3349 · Fax (925) 813-3341

Phone(925) 813-3349

Fax(925) 813-3341

Sole ProprietorYes

Enumeration DateApril 17, 2008

Last NPPES UpdateJanuary 13, 2022

NPPES CertifiedJanuary 13, 2022

✔ NPI 1861666059 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

Licenses✔ Licensed in CA · A109166✔ Licensed in OR · MD157095

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

4501 SAND CREEK RD, Antioch, CA 94531

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Daniel Adam Greninger M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Daniel Greninger reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc

27 mi

Internal Medicine

7373 WEST LANE
Stockton, CA 95210

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1548343510 (209) 476-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94531 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KRISTEN ASAKO SHIMODA PHARMD

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)