MICHELLE ANN PATREGNANI
NPI 1891377487
Emergency Medicine in Oakland, CA
About Michelle Ann Patregnani NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHELLE ANN PATREGNANI (NPI 1891377487) is an individual emergency medicine provider in Oakland, California, licensed in California (A194462) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of University Of Minnesota Medical School (2021).
NPPES Registry Identity
Specialties & Licenses 2
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
Michelle Ann Patregnani 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
4Medicare enrollment records show Michelle Patregnani reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oakland, CA 94602
- Reassigned Medicare billing, California enrollment
- 900 clinicians in this Medicare group
Castro Valley, CA 94546
- Reassigned Medicare billing, California enrollment
- 43 clinicians in this Medicare group
Fremont, CA 94538
- Reassigned Medicare billing, California enrollment
- 103 clinicians in this Medicare group
San Jose, CA 95128
- Reassigned Medicare billing, California enrollment
- 197 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 3
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 94602 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.
OAKLAND, CA 94602
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 Michelle Patregnani's NPI number?
The NPI number for Michelle Patregnani is 1891377487. It was assigned to this individual provider in the NPPES registry on April 23, 2021.
Where is Michelle Patregnani located?
Michelle Patregnani practices at 1411 E 31st St, Oakland, CA 94602. The listed phone number is (510) 437-8356.
What is Michelle Patregnani's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Michelle Patregnani enrolled in Medicare?
Yes. Michelle Patregnani 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 Michelle Patregnani's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Patregnani reassigns Medicare benefits to 4 organizations: Alameda Health System (Oakland, CA), Eden Emergency Medical Group Inc (Castro Valley, CA), Emergency Physicians Associates Fremont PC (Fremont, CA) and Emergency Physicians Associates San Jose PC (San Jose, CA). 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 Michelle Patregnani'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 Michelle Patregnani was last updated on August 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.
# Michelle Ann Patregnani · NPI 1891377487
Emergency Medicine physician in Oakland, California. Individual provider, active in the CMS NPPES registry since April 23, 2021.
## Identity
- **NPI:** 1891377487 (Entity type: Individual)
- **Enumerated:** April 23, 2021
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A194462 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1411 E 31ST ST, Oakland, CA 94602-1018
- **Phone:** (510) 437-8356
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Alameda Health System (NPI 1740332931, Oakland, CA); Eden Emergency Medical Group Inc (NPI 1891786240, Castro Valley, CA); Emergency Physicians Associates Fremont PC (NPI 1790250967, Fremont, CA); Emergency Physicians Associates San Jose PC (NPI 1306311576, San Jose, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 2021
## Record status
- **NPPES last updated:** August 28, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1891377487) · Data from the CMS NPPES public registry.