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DR. NICHOLAS WILLIAM KARLOW MD
NPI 1922669167
Emergency Medicine in Saint Louis, MO

Active since June 27, 2019PECOS EnrolledAccepts Medicare Assignment
11133 DUNN RD, DEPT EMERGENCY MED, SAINT LOUIS, MO 63136(314) 362-9123(314) 747-9160 Get Directions Write a Review

NPPES record last updated: September 9, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 9, 2025, Mar 9, 2023 (2 updates tracked since 2023).

About Dr. Nicholas William Karlow Md NPPES

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

DR. NICHOLAS WILLIAM KARLOW MD (NPI 1922669167) is an individual emergency medicine provider in Saint Louis, Missouri, licensed in Missouri (2022044117) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS, is affiliated with St Lukes Hospital, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1922669167
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. NICHOLAS WILLIAM KARLOWCredential: MD
Location Address11133 DUNN RD, DEPT EMERGENCY MEDSaint Louis, MO 63136-6163
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 362-9123 · Fax (314) 747-9160
Phone(314) 362-9123
Fax(314) 747-9160
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateJune 27, 2019
Last NPPES UpdateSeptember 9, 20252 updates tracked since enumeration
NPPES CertifiedMarch 9, 2023
✔ NPI 1922669167 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MO · 2022044117
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Other Identifiers 1

Medicaid200071816MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, Oscar Insurance Company.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. Nicholas William Karlow 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 ID547596777
PECOS Enrollment IDI20230311000039
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 3

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
168 services166 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
65 services65 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
27 services27 patients

Hospital Affiliations CMS Care Compare 2

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

St Lukes Hospital

Acute Care Hospitals · Chesterfield, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260179
Location232 S Woods Mill RdChesterfield, MO 63017 · St. Louis County
Emergency services Birthing friendly

Christian Hospital Northeast

Acute Care Hospitals · Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260180
Location11133 Dunn RoadSaint Louis, MO 63136 · St. Louis County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63136 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 20

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

ALEXANDER SEXTRO CAA
Anesthesiologist Assistant
11133 DUNN RD
SAINT LOUIS, MO 63136
St. Louis County (314) 653-5000
DR. HILTON I PRICE MD
Radiology (Diagnostic Radiology)
11133 DUNN RD, DEPT RADIOLOGY
SAINT LOUIS, MO 63136
St. Louis County (314) 362-7200
LESLEY ANN HANSON D.O.
Internal Medicine (Critical Care Medicine)
11133 DUNN RD
SAINT LOUIS, MO 63136
St. Louis County (314) 317-0600
MARY A. RUDLOFF M.D.
Pathology (Anatomic Pathology)
11133 DUNN RD, DEPT. OF PATHOLOGY
SAINT LOUIS, MO 63136
St. Louis County (314) 653-5630
ELYSHA M KACHEVAS
Nurse Practitioner (Family)
11133 DUNN RD, SUITE 2335
SAINT LOUIS, MO 63136
St. Louis County (314) 653-5007
DR. GRACE ELIZABETH MONTES MD
Emergency Medicine
11133 DUNN RD, DEPT EMERGENCY MED
SAINT LOUIS, MO 63136
St. Louis County (314) 362-9123
MS. CHRISTIE MARIE KEEN FNP
Nurse Practitioner
11133 DUNN RD, DEPT EMERGENCY MED
SAINT LOUIS, MO 63136
St. Louis County (314) 362-9123
CHRISTIAN HOSPITAL NORTHEAST
Psychiatric Unit
11133 DUNN RD
SAINT LOUIS, MO 63136
St. Louis County (314) 653-5582

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 Nicholas Karlow's NPI number?

The NPI number for Nicholas Karlow is 1922669167. It was assigned to this individual provider in the NPPES registry on June 27, 2019.

Where is Nicholas Karlow located?

Nicholas Karlow practices at 11133 Dunn Rd Dept Emergency Med, Saint Louis, MO 63136. The listed phone number is (314) 362-9123.

What is Nicholas Karlow's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Nicholas Karlow enrolled in Medicare?

Yes. Nicholas Karlow 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 Nicholas Karlow accept?

Health plans from Medica and Oscar Insurance Company list Nicholas Karlow 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 Nicholas Karlow affiliated with any hospitals?

According to CMS data, Nicholas Karlow is affiliated with St Lukes Hospital and Christian Hospital Northeast.

When was this NPI record last updated?

The NPPES record for Nicholas Karlow was last updated on September 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.