DR. MICHAEL P HEMMERSMEIER D.O.
NPI 1366404832
Family Medicine in O Fallon, MO

Active since April 03, 2006PECOS EnrolledAccepts Medicare Assignment
1101 HIGHWAY K, O FALLON, MO 63366(636) 379-4590(636) 669-2401 Get Directions Write a Review

NPPES record last updated: October 22, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Michael P Hemmersmeier D.o. NPPES

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

DR. MICHAEL P HEMMERSMEIER D.O. (NPI 1366404832) is an individual family medicine provider in O Fallon, Missouri, licensed in Missouri (108737) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Health Center, and is a graduate of At Still University Of Health Sciences, College Of Osteo Med, Kirksville (1995).

NPPES Registry Identity

NPI1366404832
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. MICHAEL P HEMMERSMEIERCredential: D.O.
Location Address1101 HIGHWAY KO Fallon, MO 63366-8431
Mailing AddressPo Box 955534 Suite 310Saint Louis, MO 63195-3539
Fax(636) 669-2401
Sole ProprietorNo
Medical School CMSAt Still University Of Health Sciences, College Of Osteo Med, KirksvilleGraduated 1995
Enumeration DateApril 3, 2006
Last NPPES UpdateOctober 22, 2020
NPPES CertifiedOctober 22, 2020
NPI 1366404832 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License Licensed in MO · 108737
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1101 HIGHWAY K, O Fallon, MO 63366

Other Identifiers 1

Medicaid249794603MO

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

Dr. Michael P Hemmersmeier D.o. 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 ID7315071982
PECOS Enrollment IDI20100818000367
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 9

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 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.
753 services411 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
234 services234 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.
41 services37 patients
X-ray of chest, 2 views 71046
A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.
35 services27 patients
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438
An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.
31 services31 patients
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402
An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.
26 services26 patients

Hospital Affiliations CMS Care Compare 5

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

Ssm St Joseph Health Center

Acute Care Hospitals · Saint Charles, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260005
Location300 1st Capitol DrSaint Charles, MO 63301 · St. Charles County
Emergency services

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

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

Ssm Health Depaul Hospital St Louis

Acute Care Hospitals · Bridgeton, MO
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260104
Location12303 Depaul DriveBridgeton, MO 63044 · St. Louis County
Emergency services Birthing friendly

Ssm St Joseph Hospital West

Acute Care Hospitals · Lake Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260200
Location100 Medical PlazaLake Saint Louis, MO 63367 · St. Charles County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63366 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
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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.

Referred Medical Equipment & Supplies CMS DME claims 6

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
18 suppliers71 claims180 services$5.75 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
10 suppliers27 claims37 services$1.10 avg. paid by Medicare
Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
1 supplier17 claims17 services$35.54 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$13.11 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier15 claims15 services$58.28 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
3 suppliers21 claims21 services$197.88 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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
1101 HIGHWAY K
O FALLON, MO 63366
Family Medicine
1101 HIGHWAY K
O FALLON, MO 63366
Physical Therapist
1101 HIGHWAY K
O FALLON, MO 63366
Nurse Practitioner
1101 HIGHWAY K
O FALLON, MO 63366
Obstetrics & Gynecology
1101 HIGHWAY K
O FALLON, MO 63366
Family Medicine
1101 HIGHWAY K
O FALLON, MO 63366
Nurse Practitioner (Family)
1101 HIGHWAY K
O FALLON, MO 63366
Family Medicine
1101 HIGHWAY K
O FALLON, MO 63366

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 Michael Hemmersmeier's NPI number?

The NPI number for Michael Hemmersmeier is 1366404832. It was assigned to this individual provider in the NPPES registry on April 3, 2006.

Where is Michael Hemmersmeier located?

Michael Hemmersmeier practices at 1101 Highway K, O Fallon, MO 63366. The listed phone number is (636) 379-4590.

What is Michael Hemmersmeier's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Michael Hemmersmeier enrolled in Medicare?

Yes. Michael Hemmersmeier 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 Michael Hemmersmeier accept?

Health plans from Anthem Blue Cross and Blue Shield and Oscar Insurance Company list Michael Hemmersmeier 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 Michael Hemmersmeier affiliated with any hospitals?

According to CMS data, Michael Hemmersmeier is affiliated with Ssm St Joseph Health Center, Mercy Hospital St Louis, Ssm St Clare Health Center, Ssm Health Depaul Hospital St Louis and Ssm St Joseph Hospital West.

When was this NPI record last updated?

The NPPES record for Michael Hemmersmeier was last updated on October 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.