DIANE M PETERSEN M.D.
NPI 1790719342
Obstetrics & Gynecology in Saint Louis, MO
About Diane M Petersen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANE M PETERSEN M.D. (NPI 1790719342) is an individual obstetrics & gynecology provider in Saint Louis, Missouri, licensed in Missouri (2002025841) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital South, and maintains a secondary practice location in Saint Louis.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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
Diane M Petersen M.d. 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
5Medicare enrollment records show Diane Petersen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 186 clinicians in this Medicare group
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 744 clinicians in this Medicare group
Saint Louis, MO 63104
- Reassigned Medicare billing, Missouri enrollment
- 1,294 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 64 clinicians in this Medicare group
Saint Louis, MO 63134
- Reassigned Medicare billing, Missouri enrollment
- 46 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital South
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63128 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 2
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 Diane Petersen's NPI number?
The NPI number for Diane Petersen is 1790719342. It was assigned to this individual provider in the NPPES registry on July 10, 2006.
Where is Diane Petersen located?
Diane Petersen practices at 10010 Kennerly Rd Fl 4, Saint Louis, MO 63128. The listed phone number is (314) 525-6072.
What is Diane Petersen's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Diane Petersen enrolled in Medicare?
Yes. Diane Petersen 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 Diane Petersen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Petersen reassigns Medicare benefits to 5 organizations: Mercy Hospital South (Saint Louis, MO), Mercy Clinic East Communities (Saint Louis, MO), Ssm Health Care Group (Saint Louis, MO), Mercy Womens Services LLC (Saint Louis, MO) and County Of St Louis Division Of Fiscal Management (Saint Louis, MO). 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 Diane Petersen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Petersen accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 2 other insurers list Diane Petersen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Diane Petersen affiliated with any hospitals?
According to CMS data, Diane Petersen is affiliated with Mercy Hospital South.
When was this NPI record last updated?
The NPPES record for Diane Petersen was last updated on December 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Diane M Petersen, M.D. · NPI 1790719342
Obstetrics & Gynecology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 10, 2006.
## Identity
- **NPI:** 1790719342 (Entity type: Individual)
- **Enumerated:** July 10, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 2002025841 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 10010 KENNERLY RD FL 4, Saint Louis, MO 63128-2106
- **Phone:** (314) 525-6072 · **Fax:** (314) 525-1387
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Mercy Hospital South (NPI 1568481984, Saint Louis, MO); Mercy Clinic East Communities (NPI 1720635329, Saint Louis, MO); Ssm Health Care Group (NPI 1306589544, Saint Louis, MO); Mercy Womens Services LLC (NPI 1629327788, Saint Louis, MO); County Of St Louis Division Of Fiscal Management (NPI 1780639088, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** December 1, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1790719342) · Data from the CMS NPPES public registry.