WILLIAM WEBSTER BEHRENS MD
NPI 1770012767
Orthopaedic Surgery in Saint Louis, MO

Active since June 05, 2017PECOS EnrolledAccepts Medicare Assignment
12639 OLD TESSON RD, SAINT LOUIS, MO 63128(314) 849-0311 Get Directions Write a Review

NPPES record last updated: August 19, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 21, 2022, May 23, 2022, Jun 5, 2017 (3 updates tracked since 2017).

About William Webster Behrens Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM WEBSTER BEHRENS MD (NPI 1770012767) is an individual orthopaedic surgery provider in Saint Louis, Missouri, licensed in Missouri (2023003713) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and maintains a secondary practice location in Chesterfield.

NPPES Registry Identity

NPI1770012767
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameWILLIAM WEBSTER BEHRENSCredential: MD
Location Address12639 OLD TESSON RDSaint Louis, MO 63128-2711
Mailing Address3635 Vista AveSaint Louis, MO 63117 · (314) 577-8850 · Fax (314) 268-5121
Sole ProprietorNo
Medical School CMSUniversity Of Kentucky College Of MedicineGraduated 2017
Enumeration DateJune 5, 2017
Last NPPES UpdateAugust 19, 20253 updates tracked since enumeration
NPPES CertifiedAugust 19, 2025
NPI 1770012767 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
Licenses Licensed in MO · 2023003713 Licensed in TX · T6519
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
12639 OLD TESSON RD, Saint Louis, MO 63128

Secondary Practice Location 1

Location 1121 Saint Lukes Center Dr Ste 302Chesterfield, MO 63017-3519 · Phone (314) 849-0311 · Fax (314) 849-4423

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

William Webster Behrens Md 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.

PECOS PAC ID7416226782
PECOS Enrollment IDI20230508001827
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
936 services82 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
284 services169 patients
X-ray of knee, 4 or more views 73564
An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.
178 services133 patients
Aspiration and/or injection of fluid from large joint 20610
This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.
150 services88 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
110 services110 patients
X-ray of hip, 2-3 views 73502
An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.
97 services80 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260020
Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County
Emergency services Birthing friendly

Mercy Hospital South

Acute Care Hospitals · Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260077
Location10010 Kennerly RoadSaint Louis, MO 63128 · St. Louis County
Emergency services

Ssm St Clare Health Center

Acute Care Hospitals · Fenton, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260081
Location1015 BowlesFenton, MO 63026 · Jefferson County
Emergency services Birthing friendly

Barnes-Jewish West County Hospital

Acute Care Hospitals · Creve Coeur, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260162
Location12634 Olive BoulevardCreve Coeur, MO 63141 · St. Louis County
Emergency services

Physician 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.

New Patient
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Physician Assistant
12639 OLD TESSON RD, SUITE 115
SAINT LOUIS, MO 63128
Orthopaedic Surgery (Hand Surgery)
12639 OLD TESSON RD
SAINT LOUIS, MO 63128
Orthopaedic Surgery
12639 OLD TESSON RD, SUITE 115
SAINT LOUIS, MO 63128
Nurse Practitioner (Family)
12639 OLD TESSON RD, SUITE 115
SAINT LOUIS, MO 63128
Orthopaedic Surgery
12639 OLD TESSON RD, SUITE 115
SAINT LOUIS, MO 63128
Clinic/Center (Ambulatory Surgical)
12639 OLD TESSON RD, STE 130
SAINT LOUIS, MO 63128
Durable Medical Equipment & Medical Supplies
12639 OLD TESSON RD, 116
SAINT LOUIS, MO 63128
Occupational Therapist
12639 OLD TESSON RD, SUITE 120
SAINT LOUIS, MO 63128

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 William Behrens's NPI number?

The NPI number for William Behrens is 1770012767. It was assigned to this individual provider in the NPPES registry on June 5, 2017.

Where is William Behrens located?

William Behrens practices at 12639 Old Tesson Rd, Saint Louis, MO 63128. The listed phone number is (314) 849-0311.

What is William Behrens's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is William Behrens enrolled in Medicare?

Yes. William Behrens 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.

What insurance does William Behrens accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 4 other insurers list William Behrens 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 William Behrens affiliated with any hospitals?

According to CMS data, William Behrens is affiliated with Mercy Hospital St Louis, Mercy Hospital South, Ssm St Clare Health Center and Barnes-Jewish West County Hospital.

When was this NPI record last updated?

The NPPES record for William Behrens was last updated on August 19, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.