DAVID A GRUNDY MD
NPI 1902845597
Emergency Medicine in Santa Rosa, CA
About David A Grundy Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID A GRUNDY MD (NPI 1902845597) is an individual emergency medicine provider in Santa Rosa, California, licensed in California (C55843) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
David A Grundy Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show David Grundy reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Santa Rosa, CA 95405
- Reassigned Medicare billing, California enrollment
- 65 clinicians in this Medicare group
Novato, CA 94945
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1548216260 (California)
- 2,323 clinicians in this Medicare group
Hayward, CA 94545
- Reassigned Medicare billing, California enrollment
- 160 clinicians in this Medicare group
Mariposa, CA 95338
- Reassigned Medicare billing, California enrollment
- 28 clinicians in this Medicare group
Delano, CA 93215
- Reassigned Medicare billing, California enrollment
- 301 clinicians in this Medicare group
Blythe, CA 92225
- Reassigned Medicare billing, California enrollment
- 50 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95405 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SANTA ROSA, CA 95405
SANTA ROSA, CA 95405
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is David Grundy's NPI number?
The NPI number for David Grundy is 1902845597. It was assigned to this individual provider in the NPPES registry on June 6, 2006.
Where is David Grundy located?
David Grundy practices at 1165 Montgomery Dr, Santa Rosa, CA 95405. The listed phone number is (707) 546-3210.
What is David Grundy's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is David Grundy enrolled in Medicare?
Yes. David Grundy is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for David Grundy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Grundy reassigns Medicare benefits to 6 organizations: Chase Dennis Emergency Medical Group Inc (Santa Rosa, CA), Cep America - California (Novato, CA), Nes Western Group, A Professional Corporation (Hayward, CA), Erx Plus Professional Corporation (Mariposa, CA), Team Physicians Of California Medical Group Inc (Delano, CA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for David Grundy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for David Grundy was last updated on March 26, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# David A Grundy, MD · NPI 1902845597
Emergency Medicine physician in Santa Rosa, California. Individual provider, active in the CMS NPPES registry since June 6, 2006.
## Identity
- **NPI:** 1902845597 (Entity type: Individual)
- **Enumerated:** June 6, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** C55843 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1165 MONTGOMERY DR, Santa Rosa, CA 95405-4801
- **Phone:** (707) 546-3210
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Chase Dennis Emergency Medical Group Inc (NPI 1033152350, Santa Rosa, CA); Cep America - California (NPI 1124577259, Novato, CA); Nes Western Group, A Professional Corporation (NPI 1588249569, Hayward, CA); Erx Plus Professional Corporation (NPI 1336508407, Mariposa, CA); Team Physicians Of California Medical Group Inc (NPI 1447288345, Delano, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** March 26, 2016
- **Other identifiers:** Medicaid 2350343 (OH); Other P00273888; Medicare UPIN H68590 (OH); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1902845597) · Data from the CMS NPPES public registry.