William Frederick Feldner, D.O.
Family Medicine · Saint Louis, MO
At a glance
3009 North New Ballas Road Ste 226A, Saint Louis, MO 63195-2395
NPPES record updated Sep 18, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
3009 North New Ballas Road Ste 226ASaint Louis, MO 63195-2395
Additional reported practice locations
1011 Bowles AveSt Francis Bldg., Suite 450
Fenton, MO 630262395
Phone: 3144671500
Fax: 3144671515
Education & affiliations
- Medical / professional school
- Oklahoma State University College Of Osteopathic Medicine
- Graduation year
- 1987
- CMS specialties
- Family Practice
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Barnes Jewish Hospital Saint Louis, MO
- Mercy Hospital South Saint Louis, MO
- Missouri Baptist Medical Center Saint Louis, MO
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Family Medicine
- Taxonomy code
- 207Q00000X
- Enumeration date
- Dec 23, 2005
- Record updated
- Sep 18, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- D.O.
Reported taxonomies and licenses
207Q00000X · Primary
License reported: R1J82 MO
207QS0010X
License reported: R1J82 MO
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
3009 North New Ballas Road Ste 226ASaint Louis, MO 63195-2395
- Phone
- (314) 996-4900
- Fax
- (314) 996-4901
Mailing address
PO BOX 959354SAINT LOUIS, MO 631953340
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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