JOHN THOMAS PAAS M.D.
NPI 1245322908
Obstetrics & Gynecology in Orange, CA
About John Thomas Paas M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN THOMAS PAAS M.D. (NPI 1245322908) is an individual obstetrics & gynecology provider in Orange, California, licensed in California (G84828) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Monterey.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Thomas Paas M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
8Medicare enrollment records show John Paas reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 149 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 clinicians in this Medicare group
Carmel, CA 93923
- Reassigned Medicare billing, California enrollment
- 155 clinicians in this Medicare group
Monterey, CA 93940
- Reassigned Medicare billing, California enrollment
- 245 clinicians in this Medicare group
St George, UT 84790
- Reassigned Medicare billing, Utah enrollment
- 3,691 clinicians in this Medicare group
Stockton, CA 95204
- Reassigned Medicare billing, California enrollment
- 83 clinicians in this Medicare group
Chico, CA 95926
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Obhg California PC
- 711 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92868 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.
ORANGE, CA 92868
ORANGE, CA 92868
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 John Paas's NPI number?
The NPI number for John Paas is 1245322908. It was assigned to this individual provider in the NPPES registry on September 29, 2006.
Where is John Paas located?
John Paas practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (800) 465-3203.
What is John Paas's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is John Paas enrolled in Medicare?
Yes. John Paas is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Paas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Paas reassigns Medicare benefits to 8 organizations: Regents Of The University Of California (Orange, CA), Emergency And Acute Care Medical Corporation (San Diego, CA), Montage Medical Group (Carmel, CA), Community Hospital Of The Monterey Peninsula (Monterey, CA), Ihc Health Services Inc (St George, UT) and 3 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 John Paas'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 John Paas was last updated on June 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# John Thomas Paas, M.D. · NPI 1245322908
Obstetrics & Gynecology physician in Orange, California. Individual provider, active in the CMS NPPES registry since September 29, 2006.
## Identity
- **NPI:** 1245322908 (Entity type: Individual)
- **Enumerated:** September 29, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** G84828 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (800) 465-3203
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1356304034, Orange, CA); Emergency And Acute Care Medical Corporation (NPI 1437103942, San Diego, CA); Montage Medical Group (NPI 1770710709, Carmel, CA); Community Hospital Of The Monterey Peninsula (NPI 1225285810, Monterey, CA); Ihc Health Services Inc (NPI 1457496531, St George, UT); and 3 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 2, 2025
- **Other identifiers:** Other CC8221 (NV); Medicaid 2016992 (NV)
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Source: [NPI Profile](https://npiprofile.com/npi/1245322908) · Data from the CMS NPPES public registry.