1. Home
  2. Directory
  3. Missouri
  4. O Fallon
  5. Family Medicine
  6. NPI Profile

DR. ALYSSA LEIGH KELLER M.D.
NPI 1588892665
Family Medicine in O Fallon, MO

Active since June 26, 2009PECOS EnrolledAccepts Medicare Assignment
300 WINDING WOODS DR, SUITE 222, O FALLON, MO 63366(636) 978-8600(636) 978-8602 Get Directions Write a Review

NPPES record last updated: June 30, 2012. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Dr. Alyssa Leigh Keller M.d. NPPES

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

DR. ALYSSA LEIGH KELLER M.D. (NPI 1588892665) is an individual family medicine provider in O Fallon, Missouri, licensed in Missouri (2009017184) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of University Of Missouri, Columbia School Of Medicine (2009).

NPPES Registry Identity

NPI1588892665
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. ALYSSA LEIGH KELLERCredential: M.D.
Location Address300 WINDING WOODS DR, SUITE 222O Fallon, MO 63366-4771
Mailing Address300 Winding Woods Dr, Suite 222O Fallon, MO 63366-4771 · (636) 978-8600 · Fax (636) 978-8602
Phone(636) 978-8600
Fax(636) 978-8602
Sole ProprietorNo
Medical School CMSUniversity Of Missouri, Columbia School Of MedicineGraduated 2009
Enumeration DateJune 26, 2009
Last NPPES UpdateJune 30, 2012
✔ NPI 1588892665 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 · 2009017184
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.
300 WINDING WOODS DR, O Fallon, MO 63366
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica.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. Alyssa Leigh Keller 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 ID6507013158
PECOS Enrollment IDI20120904000522
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 6

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.
114 services86 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.
80 services80 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.
47 services36 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
30 services30 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
27 services27 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
18 services15 patients

Hospital Affiliations CMS Care Compare 2

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 Lincoln

Critical Access Hospitals · Troy, MO
OwnershipGovernment - Local
CMS Certification Number261319
Location1000 East Cherry StreetTroy, MO 63379 · Lincoln County
Emergency services

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.

Other Providers at the Same Location NPPES 11

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

COURTNEY PAIGE JONES
Nurse Practitioner (Primary Care)
300 WINDING WOODS DR
O FALLON, MO 63366
St. Charles County (636) 614-3280
DR. LEAH ROSE GLASS D.O.
Obstetrics & Gynecology
300 WINDING WOODS DR, SUITE 200
O FALLON, MO 63366
St. Charles County (636) 240-0130
DR. JULIE ELIZABETH STEWART DPM
Podiatrist (Foot & Ankle Surgery)
300 WINDING WOODS DR, SUITE214
O FALLON, MO 63366
St. Charles County (636) 281-1705
DDK, LC
Podiatrist
300 WINDING WOODS DR, SUITE 214
O FALLON, MO 63366
St. Charles County (636) 281-8393
DR. MARGARETTA LYNN MENDENHALL M.D.
Obstetrics & Gynecology
300 WINDING WOODS DR, SUITE 200
O FALLON, MO 63366
St. Charles County (636) 240-0130
MS. SONDRA L MCCLANAHAN FNP
Nurse Practitioner (Family)
300 WINDING WOODS DR, SUITE 222
O FALLON, MO 63366
St. Charles County (636) 978-8600
ST. JOHN'S MERCY SUPPORT SERVICES
Obstetrics & Gynecology (Maternal & Fetal Medicine)
300 WINDING WOODS DR, SUITE 112
O FALLON, MO 63366
St. Charles County (636) 379-6600
LOUIS GAEFKE DPM
Podiatrist
300 WINDING WOODS DR, STE 214
OFALLON, MO 63366
St. Charles County (636) 281-8393

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 Alyssa Keller's NPI number?

The NPI number for Alyssa Keller is 1588892665. It was assigned to this individual provider in the NPPES registry on June 26, 2009.

Where is Alyssa Keller located?

Alyssa Keller practices at 300 Winding Woods Dr Suite 222, O Fallon, MO 63366. The listed phone number is (636) 978-8600.

What is Alyssa Keller's specialty?

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

Is Alyssa Keller enrolled in Medicare?

Yes. Alyssa Keller 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 Alyssa Keller accept?

Health plans from Medica list Alyssa Keller 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 Alyssa Keller affiliated with any hospitals?

According to CMS data, Alyssa Keller is affiliated with Mercy Hospital St Louis and Mercy Hospital Lincoln.

When was this NPI record last updated?

The NPPES record for Alyssa Keller was last updated on June 30, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.