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DR. MARC MENDELSOHN MD
NPI 1699110379
Emergency Medicine in Saint Louis, MO

Active since May 08, 2013PECOS EnrolledAccepts Medicare Assignment
79.29/100
CMS Quality Rating
400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MED, SAINT LOUIS, MO 63110(314) 362-9123(314) 747-3338 Get Directions Write a Review

NPPES record last updated: April 21, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 21, 2026, Apr 25, 2024, Apr 10, 2024 and 6 more (9 updates tracked since 2016).

About Dr. Marc Mendelsohn Md NPPES

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

DR. MARC MENDELSOHN MD (NPI 1699110379) is an individual emergency medicine provider in Saint Louis, Missouri, licensed in Missouri (2019018127) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1699110379
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. MARC MENDELSOHNCredential: MD
Location Address400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MEDSaint Louis, MO 63110-1014
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 362-9123 · Fax (314) 747-3338
Phone(314) 362-9123
Fax(314) 747-3338
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateMay 8, 2013
Last NPPES UpdateApril 21, 20269 updates tracked since enumeration
NPPES CertifiedApril 21, 2026
✔ NPI 1699110379 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in MO · 2019018127✔ Licensed in CT · 1.084417
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.
Also ListedGeneral PracticeTaxonomy 208D00000X · License 2019018127 (MO)
400 S KINGSHIGHWAY BLVD, Saint Louis, MO 63110
Open in Google Maps ↗

Other Identifiers 1

Medicaid200069983MO

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. Marc Mendelsohn 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 ID5698038057
PECOS Enrollment IDI20190624003045
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 5

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.
82 services79 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
56 services52 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.
46 services45 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.
18 services18 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
14 services14 patients

Hospital Affiliations CMS Care Compare 2

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

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260032
LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County
Emergency services Birthing friendly

Barnes-Jewish West County Hospital

Acute Care Hospitals · Creve Coeur, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260162
Location12634 Olive BoulevardCreve Coeur, MO 63141 · St. Louis County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63110 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.

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.

79.29/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality71.46
Promoting Interoperability100
Improvement Activities40
Cost59.51

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.

DR. RICHARD THOMAS GRIFFEY MD
Emergency Medicine
400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MED
SAINT LOUIS, MO 63110
St. Louis City (314) 362-9123
MS. ELIZABETH M CARNAGHI AGNP
Nurse Practitioner
400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MEDICINE
SAINT LOUIS, MO 63110
St. Louis City (314) 362-9123
DR. RICHARD S TAO MD
Emergency Medicine
400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MED
SAINT LOUIS, MO 63110
St. Louis City (314) 362-9123
DR. MARK D LEVINE MD
Emergency Medicine
400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MED
SAINT LOUIS, MO 63110
St. Louis City (314) 362-9123
DR. DAVID K TAN MD
Emergency Medicine
400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MED
SAINT LOUIS, MO 63110
St. Louis City (314) 362-9123
DR. JARED LEVY ROSS DO
Emergency Medicine
400 S KINGSHIGHWAY BLVD
SAINT LOUIS, MO 63110
St. Louis City (314) 362-9123
MR. AJAY MINTON PA
Physician Assistant
400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MED
SAINT LOUIS, MO 63110
St. Louis City (314) 362-9123
DR. BRIAN RANDOLPH FROELKE MD
Emergency Medicine
400 S KINGSHIGHWAY BLVD, DEPT EMERGENCY MED
SAINT LOUIS, MO 63110
St. Louis City (314) 362-9123

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 Marc Mendelsohn's NPI number?

The NPI number for Marc Mendelsohn is 1699110379. It was assigned to this individual provider in the NPPES registry on May 8, 2013.

Where is Marc Mendelsohn located?

Marc Mendelsohn practices at 400 S Kingshighway Blvd Dept Emergency Med, Saint Louis, MO 63110. The listed phone number is (314) 362-9123.

What is Marc Mendelsohn's specialty?

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

Is Marc Mendelsohn enrolled in Medicare?

Yes. Marc Mendelsohn 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.

Is Marc Mendelsohn affiliated with any hospitals?

According to CMS data, Marc Mendelsohn is affiliated with Barnes Jewish Hospital and Barnes-Jewish West County Hospital.

When was this NPI record last updated?

The NPPES record for Marc Mendelsohn was last updated on April 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.