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MARK KRASNOFF M.D.
NPI 1821016064
Internal Medicine in Saint Louis, MO

Active since July 17, 2006PECOS EnrolledAccepts Medicare Assignment
1035 BELLEVUE AVE, SUITE 400, SAINT LOUIS, MO 63117(314) 925-4700(314) 925-4750 Get Directions Write a Review

NPPES record last updated: October 23, 2020. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Mark Krasnoff M.d. NPPES

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

MARK KRASNOFF M.D. (NPI 1821016064) is an individual internal medicine provider in Saint Louis, Missouri, licensed in Missouri (MD114791) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Johns Hopkins University School Of Medicine (1991).

NPPES Registry Identity

NPI1821016064
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMARK KRASNOFFCredential: M.D.
Location Address1035 BELLEVUE AVE, SUITE 400Saint Louis, MO 63117-1854
Mailing AddressPo Box 955534Saint Louis, MO 63195-5534
Phone(314) 925-4700
Fax(314) 925-4750
Sole ProprietorNo
Medical School CMSJohns Hopkins University School Of MedicineGraduated 1991
Enumeration DateJuly 17, 2006
Last NPPES UpdateOctober 23, 2020
NPPES CertifiedOctober 23, 2020
✔ NPI 1821016064 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MO · MD114791
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1035 BELLEVUE AVE, Saint Louis, MO 63117
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Other Identifiers 1

Medicaid209978915MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark Krasnoff 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 ID2567540230
PECOS Enrollment IDI20080421000487
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Mark Krasnoff reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ssm Health Care St. Louis
0.1 mi
Emergency Medicine
6420 CLAYTON RD
Saint Louis, MO 63117
  • Reassigned Medicare billing, Missouri enrollment
  • 741 clinicians in this Medicare group
NPI 1366400855 (314) 768-8000
Ssm Medical Group, Inc.
11 mi
Multi-Specialty
1011 BOWLES AVE, SUITE 300
Fenton, MO 63026
  • Reassigned Medicare billing, Missouri enrollment
  • 697 clinicians in this Medicare group
NPI 1700966207 (636) 496-5000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

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.
501 services263 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.
247 services247 patients
Transitional care management services for problem of at least moderate complexity 99495
Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.
30 services25 patients
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.
22 services21 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.
17 services16 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.
16 services16 patients

Hospital Affiliations CMS Care Compare 5

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

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 St Mary's Hospital - St Louis

Acute Care Hospitals · Richmond Heights, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260091
Location6420 Clayton RdRichmond Heights, MO 63117 · St. Louis County
Emergency services Birthing friendly

Ssm Health Saint Louis University Hospital

Acute Care Hospitals · Saint Louis, MO
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260105
Location3635 Vista AveSaint Louis, MO 63110 · St. Louis City County
Emergency services

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63117 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
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 4

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
20 suppliers59 claims201 services$6.35 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
13 suppliers37 claims49 services$1.03 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 supplier14 claims14 services$64.81 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
5 suppliers26 claims26 services$189.76 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.

MRS. JUDITH ANN DIETZLER RPH
Pharmacist
1035 BELLEVUE AVE, CLAYTON HEALTH SERVICES PHARMACY
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870
SSM HEALTH CARE ST LOUIS
Pharmacy (Community/Retail Pharmacy)
1035 BELLEVUE AVE
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870
SSM MEDICAL GROUP
Clinic/Center
1035 BELLEVUE AVE, SUITE 305
SAINT LOUIS, MO 63117
St. Louis County (314) 644-6161
GENERATIONS FAMILY MEDICINE PC
Family Medicine
1035 BELLEVUE AVE, SUITE 206
ST LOUIS, MO 63117
St. Louis County (314) 781-4922
WELLNESS HEALTHCARE ASSOCIATES, INC
Family Medicine
1035 BELLEVUE AVE, STE 401
SAINT LOUIS, MO 63117
St. Louis County (314) 781-0361
SSM MEDICAL GROUP
Clinic/Center
1035 BELLEVUE AVE, SUITE 502
SAINT LOUIS, MO 63117
St. Louis County (314) 638-3600
SSM MEDICAL GROUP
Clinic/Center (Medical Specialty)
1035 BELLEVUE AVE, SUITE 500
SAINT LOUIS, MO 63117
St. Louis County (314) 647-1115
DAVID ALAN WACHTER RPH
Pharmacist
1035 BELLEVUE AVE
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870

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 Mark Krasnoff's NPI number?

The NPI number for Mark Krasnoff is 1821016064. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Where is Mark Krasnoff located?

Mark Krasnoff practices at 1035 Bellevue Ave Suite 400, Saint Louis, MO 63117. The listed phone number is (314) 925-4700.

What is Mark Krasnoff's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mark Krasnoff enrolled in Medicare?

Yes. Mark Krasnoff 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.

Which organizations bill Medicare for Mark Krasnoff's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Krasnoff reassigns Medicare benefits to 2 organizations: Ssm Health Care St. Louis (Saint Louis, MO) and Ssm Medical Group, Inc. (Fenton, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Krasnoff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Krasnoff accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter of Oklahoma and Ambetter of Tennessee and 1 other insurer list Mark Krasnoff 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 Mark Krasnoff affiliated with any hospitals?

According to CMS data, Mark Krasnoff is affiliated with Mercy Hospital St Louis, Ssm St Clare Health Center, Ssm Health St Mary's Hospital - St Louis, Ssm Health Saint Louis University Hospital and St Lukes Hospital.

When was this NPI record last updated?

The NPPES record for Mark Krasnoff was last updated on October 23, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.