STEVEN PETER MARON M.D.
NPI 1821026063
Emergency Medicine in Merced, CA
About Steven Peter Maron M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN PETER MARON M.D. (NPI 1821026063) is an individual emergency medicine provider in Merced, California, licensed in California (G64122) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 14
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Steven Peter Maron M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
17Medicare enrollment records show Steven Maron reassigns Medicare billing to 17 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Merced, CA 95340
- Reassigned Medicare billing, California enrollment
- 141 clinicians in this Medicare group
Hollister, CA 95023
- Reassigned Medicare billing, California enrollment
- 38 clinicians in this Medicare group
Gilroy, CA 95020
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1629301346 (California)
- 2,460 clinicians in this Medicare group
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 43 clinicians in this Medicare group
Woodland, CA 95695
- Reassigned Medicare billing, California enrollment
- 45 clinicians in this Medicare group
Sonoma, CA 95476
- Reassigned Medicare billing, California enrollment
- 112 clinicians in this Medicare group
Petaluma, CA 94954
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1720695547 (California)
- 30 clinicians in this Medicare group
Quincy, CA 95971
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
Northridge, CA 91325
- Reassigned Medicare billing, California enrollment
- 137 clinicians in this Medicare group
Glendale, CA 91206
- Reassigned Medicare billing, California enrollment
- 15 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 5
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 95340 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Steven Maron's NPI number?
The NPI number for Steven Maron is 1821026063. It was assigned to this individual provider in the NPPES registry on June 28, 2006. The provider is also known as Steve Peter Maron M.D..
Where is Steven Maron located?
Steven Maron practices at 301 E 13th St, Merced, CA 95340. The listed phone number is (209) 385-7111.
What is Steven Maron's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Steven Maron enrolled in Medicare?
Yes. Steven Maron is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Steven Maron's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Maron reassigns Medicare benefits to 17 organizations: San Joaquin Emergency Medical Associates (Merced, CA), Big River Emergency Physicians Inc (Hollister, CA), County Of Santa Clara (Gilroy, CA), Vallejo Emergency Physicians Medical Group Inc. (Vallejo, CA), Woodland Emergency Physicians Medical Group Inc (Woodland, CA) and 12 more organizations, 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 Steven Maron'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 Steven Maron was last updated on October 31, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Steven Peter Maron, M.D. · NPI 1821026063
Emergency Medicine physician in Merced, California. Individual provider, active in the CMS NPPES registry since June 28, 2006.
## Identity
- **NPI:** 1821026063 (Entity type: Individual)
- **Enumerated:** June 28, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** G64122 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 301 E 13TH ST, Merced, CA 95340-6211
- **Phone:** (209) 385-7111 · **Fax:** (209) 385-7066
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 17 organizations under Medicare reassignment (form CMS-855R): San Joaquin Emergency Medical Associates (NPI 1588960413, Merced, CA); Big River Emergency Physicians Inc (NPI 1033501168, Hollister, CA); County Of Santa Clara (NPI 1922093533, Gilroy, CA); Vallejo Emergency Physicians Medical Group Inc. (NPI 1083916373, Vallejo, CA); Woodland Emergency Physicians Medical Group Inc (NPI 1881868164, Woodland, CA); and 12 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 31, 2008
- **Other identifiers:** Medicaid 00G641220 (CA); Medicare PIN 0G6412202 (CA); Medicare UPIN F17535 (CA); and 11 more
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Source: [NPI Profile](https://npiprofile.com/npi/1821026063) · Data from the CMS NPPES public registry.