DR. WILLIAM KELLAR WINKELMEYER M.D.
NPI 1316943475
Internal Medicine - Nephrology in Columbia, MO

Q: What is William Winkelmeyer's NPI number?

The NPI number for William Winkelmeyer is 1316943475. It was assigned to this individual provider in the NPPES registry on June 23, 2005.

Q: What is William Winkelmeyer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Active since June 23, 2005PECOS EnrolledAccepts Medicare Assignment

70.23/100

CMS Quality Rating

1205 W BROADWAY, COLUMBIA, MO 65203(573) 499-0642(573) 449-1787 Get Directions Write a Review

NPPES record last updated: October 5, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. William Kellar Winkelmeyer M.d. NPPES

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

DR. WILLIAM KELLAR WINKELMEYER M.D. (NPI 1316943475) is an individual nephrology provider in Columbia, Missouri, licensed in Missouri (36326) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, is affiliated with Boone Hospital Center, and is a graduate of Other (1981).

NPPES Registry Identity

NPI1316943475

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameDR. WILLIAM KELLAR WINKELMEYERCredential: M.D.

Location Address1205 W BROADWAYColumbia, MO 65203-2125

Mailing Address1205 W BroadwayColumbia, MO 65203-2125 · (573) 499-0642 · Fax (573) 449-1787

Phone(573) 499-0642

Fax(573) 449-1787

Sole ProprietorNo

Medical School CMSOtherGraduated 1981

Enumeration DateJune 23, 2005

Last NPPES UpdateOctober 5, 2022

NPPES CertifiedOctober 5, 2022

✔ NPI 1316943475 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in MO · 36326

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

1205 W BROADWAY, Columbia, MO 65203

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Other Identifiers 9

Medicaid201823911MO

Other116646MO · Healthlink

Other19620MO · Blue Cross Blue Shield

Other340001743MO · Railroad Medicare

Other1721MO · Healthcare Usa

Other000623655MO · Humana Ind

Other23879MO · Group Health Plans

Other733581MO · First Health

OtherA10329MO · Mercy

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan 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. William Kellar Winkelmeyer 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 ID3678567229

PECOS Enrollment IDI20090317000632

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 11

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

382 services240 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

358 services124 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.

310 services252 patients

Dialysis services, 4 or more physician visits per month (20 years or older) 90960

Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.

151 services24 patients

Hemodialysis procedure requiring repeated evaluation 90937

Hemodialysis is a treatment that filters waste and excess fluids from your blood when your kidneys can't do this adequately. It's an ongoing process, requiring regular evaluations to monitor and adjust the treatment for optimal results.

126 services49 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

116 services45 patients

Dialysis services, 2-3 physician visits per month (20 years or older) 90961

Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.

108 services41 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

97 services90 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

34 services34 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.

17 services17 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.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Boone Hospital Center

Acute Care Hospitals · Columbia, MO

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number260068

Location1600 E BroadwayColumbia, MO 65201 · Boone County

Emergency services Birthing friendly

Moberly Regional Medical Center

Acute Care Hospitals · Moberly, MO

3/5 CMS rating

OwnershipProprietary

CMS Certification Number260074

Location1515 Union AveMoberly, MO 65270 · Randolph County

Emergency services

University Of Missouri Health Care

Acute Care Hospitals · Columbia, MO

2/5 CMS rating

OwnershipGovernment - State

CMS Certification Number260141

LocationOne Hospital DriveColumbia, MO 65212 · Boone County

Emergency services Birthing friendly

Pershing Memorial Hospital

Critical Access Hospitals · Brookfield, MO

OwnershipVoluntary non-profit - Private

CMS Certification Number261307

Location130 East LocklingBrookfield, MO 64628 · Linn County

Emergency services

Macon County Samaritan Memorial Hospital

Critical Access Hospitals · Macon, MO

OwnershipGovernment - Local

CMS Certification Number261313

Location1205 North Missouri StMacon, MO 63552 · Macon County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 65203 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

$121.96 typical visit price

range $52.28 – $161.24

Typical copayment $30.49 (range $13.07 – $40.31)

Most-billed visit code 99204

Established Patient

$93.24 typical visit price

range $16.30 – $131.05

Typical copayment $23.31 (range $4.07 – $32.76)

Most-billed visit code 99214

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.

70.23/100

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

Individually scored

Quality

65.24

Promoting Interoperability

Improvement Activities

Cost

41.37

Reported Quality Measures

Controlling High Blood Pressure

68%684 patients4/55-star benchmark: 91%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

94%142 patients1/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

99%1,516 patients4/55-star benchmark: 100%

e-Prescribing

96%867 patients3/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

99%940 patients5/55-star benchmark: 98%

Provide Patients Electronic Access to Their Health Information

66%384 patients3/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

68%378 patients3/55-star benchmark: 91%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 8

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

10 suppliers28 claims61 services$4.88 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

5 suppliers11 claims16 services$0.99 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

2 suppliers15 claims15 services$91.84 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

1 supplier15 claims42 services$37.82 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

2 suppliers11 claims11 services$20.20 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

2 suppliers18 claims18 services$16.44 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 7

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

NEPHROLOGY AND HYPERTENSION ASSOCIATES

Internal Medicine (Nephrology)