DR. DONALD ALAN WEIMER M.D.
NPI 1932152980
Orthopaedic Surgery in O Fallon, IL

Q: What is Donald Weimer's NPI number?

The NPI number for Donald Weimer is 1932152980. It was assigned to this individual provider in the NPPES registry on May 19, 2006.

Q: What is Donald Weimer's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Donald Weimer was last updated on August 20, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since May 19, 2006PECOS EnrolledAccepts Medicare Assignment

94.61/100

CMS Quality Rating

1512 N GREEN MOUNT RD, SUITE 300, O FALLON, IL 62269(618) 641-5800 Get Directions Write a Review

NPPES record last updated: August 20, 2015. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Donald Alan Weimer M.d. NPPES

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

DR. DONALD ALAN WEIMER M.D. (NPI 1932152980) is an individual orthopaedic surgery provider in O Fallon, Illinois, licensed in Illinois (036101574) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with St Josephs Hospital, and is a graduate of Medical College Of Wisconsin (1988).

NPPES Registry Identity

NPI1932152980

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameDR. DONALD ALAN WEIMERCredential: M.D.

Location Address1512 N GREEN MOUNT RD, SUITE 300O Fallon, IL 62269-1953

Mailing Address1512 N Green Mount Rd, Suite 300O Fallon, IL 62269-1953 · (618) 641-5800

Phone(618) 641-5800

Sole ProprietorNo

Medical School CMSMedical College Of WisconsinGraduated 1988

Enumeration DateMay 19, 2006

Last NPPES UpdateAugust 20, 2015

✔ NPI 1932152980 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in IL · 036101574

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.

1512 N GREEN MOUNT RD, O Fallon, IL 62269

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Other Identifiers 4

Medicare UPINF63665IL

Medicare PIN210163IL

Medicaid036101574IL

Medicare PIN356400IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware and more.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

Dr. Donald Alan Weimer 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.

PECOS PAC ID2365404555

PECOS Enrollment IDI20041030000040

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 16

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.

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

438 services145 patients

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.

376 services76 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.

225 services155 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.

124 services81 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

122 services51 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

80 services74 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.

47 services47 patients

Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose J7323

Hyaluronan or Euflexxa is a substance similar to a natural substance in your joints. It's injected into the joint space to treat pain from osteoarthritis, especially in the knee. It helps to lubricate the joint, reducing pain and improving mobility.

43 services11 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

37 services36 patients

Prosthetic repair of shoulder joint, total shoulder 23472

Total shoulder prosthetic repair is a surgical procedure to replace a damaged shoulder joint with artificial components. It aims to relieve pain and restore mobility. The procedure involves replacing the ball (humeral head) and socket (glenoid) of the shoulder joint.

26 services26 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

26 services26 patients

Replacement of knee joint, both sides of knee 27447

A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.

19 services19 patients

Shaving of part of shoulder bone and repair of ligament using an endoscope 29826

This procedure involves using a tiny camera, called an endoscope, to view and repair a damaged shoulder ligament. Simultaneously, a small portion of the shoulder bone is shaved to alleviate discomfort and improve movement. It's a minimally invasive technique that aids in a quicker recovery.

17 services17 patients

Removal of extensive shoulder joint tissue using an endoscope 29823

This procedure, known as arthroscopic debridement, involves using a small camera (endoscope) to view your shoulder joint. Damaged or unwanted tissue is then carefully removed. This minimally invasive technique aims to reduce pain and improve joint mobility.

16 services16 patients

Partial removal of collar bone at shoulder using an endoscope 29824

This procedure involves the partial removal of the collar bone at the shoulder using an endoscope, a tool with a light and camera. It's done to relieve pain or improve shoulder movement. The surgeon makes small incisions, then uses the endoscope to guide their work.

13 services13 patients

Repair of shoulder rotator cuff using an endoscope 29827

This procedure, known as arthroscopic rotator cuff repair, helps fix tears in the shoulder's rotator cuff. An endoscope, a small camera, is used to view the shoulder inside. Using small tools, the surgeon repairs the torn tissue. This minimally invasive approach often leads to a quicker recovery.

12 services12 patients

Hospital Affiliations CMS Care Compare 4

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

St Josephs Hospital

Acute Care Hospitals · Breese, IL

OwnershipVoluntary non-profit - Church

CMS Certification Number140145

Location9515 Holy Cross LnBreese, IL 62230 · Clinton County

Emergency services Birthing friendly

Memorial Hospital

Acute Care Hospitals · Belleville, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140185

Location4500 Memorial DriveBelleville, IL 62226 · St. Clair County

Emergency services Birthing friendly

Hshs St Elizabeth's Hospital

Acute Care Hospitals · O Fallon, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140187

LocationOne St Elizabeth BoulevardO Fallon, IL 62269 · St. Clair County

Emergency services Birthing friendly

Sparta Community Hospital

Critical Access Hospitals · Sparta, IL

OwnershipGovernment - Hospital District or Authority

CMS Certification Number141349

Location818 E BroadwaySparta, IL 62286 · Randolph County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62269 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

$88.44 typical visit price

range $56.28 – $173.35

Typical copayment $22.11 (range $14.07 – $43.33)

Most-billed visit code 99203

Established Patient

$70.42 typical visit price

range $17.51 – $139.99

Typical copayment $17.60 (range $4.37 – $34.99)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.61/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

85.17

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Continuous passive motion exercise device for use on knee only E0935

DME-Other DME · category DE000N

1 supplier12 claims204 services$22.13 avg. paid by Medicare

Shoulder orthosis, figure of eight design abduction restrainer, canvas and webbing, prefabricated, off-the-shelf L3660

DME-Orthotic Devices · category DF000N

1 supplier19 claims19 services$78.37 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 19

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ST ELIZABETHS HOSPITAL OF THE HOSPITAL SISTERS OF THE THIRD ORDER

Clinic/Center

1512 N GREEN MOUNT RD, SUITE 200
O FALLON, IL 62269

St. Clair County (618) 234-2120

ST ELIZABETHS HOSPITAL OF THE HOSPITAL SISTERS OF THE THIRD ORDER

Family Medicine

1512 N GREEN MOUNT RD, SUITE 108
O FALLON, IL 62269

St. Clair County (618) 624-5510

VERONICA MINERVA CONTASTI MD

Internal Medicine

1512 N GREEN MOUNT RD
O FALLON, IL 62269

St. Clair County (872) 985-7137

LA SANTE WISCONSIN INC.

Durable Medical Equipment & Medical Supplies

1512 N GREEN MOUNT RD
O FALLON, IL 62269

St. Clair County (920) 465-3000

GREGORY CESAR CLIMACO MD

Family Medicine

1512 N GREEN MOUNT RD, SUITE 108
O'FALLON, IL 62269

St. Clair County (618) 624-5510

VITUITY - ILLINOIS AUC LLP

Emergency Medicine

1512 N GREEN MOUNT RD
O FALLON, IL 62269

St. Clair County (618) 624-3750

MIDWEST EMERGENCY MANAGEMENT, INC.

Clinic/Center (Urgent Care)

1512 N GREEN MOUNT RD
O FALLON, IL 62269

St. Clair County (618) 624-3750

TARA TOPPER FNP-C

Nurse Practitioner (Family)

1512 N GREEN MOUNT RD
O FALLON, IL 62269

St. Clair County (619) 624-3368

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 Donald Weimer's NPI number?

The NPI number for Donald Weimer is 1932152980. It was assigned to this individual provider in the NPPES registry on May 19, 2006.

Where is Donald Weimer located?

Donald Weimer practices at 1512 N Green Mount Rd Suite 300, O Fallon, IL 62269. The listed phone number is (618) 641-5800.

What is Donald Weimer's specialty?

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

Is Donald Weimer enrolled in Medicare?

Yes. Donald Weimer 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 Donald Weimer accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health and UnitedHealthcare list Donald Weimer 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 Donald Weimer affiliated with any hospitals?

According to CMS data, Donald Weimer is affiliated with St Josephs Hospital, Memorial Hospital, Hshs St Elizabeth's Hospital and Sparta Community Hospital.

When was this NPI record last updated?

The NPPES record for Donald Weimer was last updated on August 20, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.