DR. MARK LOUIS SIEFRING MD
NPI 1245729870
Internal Medicine in Louisville, KY

Q: What is Mark Siefring's NPI number?

The NPI number for Mark Siefring is 1245729870. It was assigned to this individual provider in the NPPES registry on May 9, 2018.

Q: What is Mark Siefring's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Siefring was last updated on August 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.

Active since May 09, 2018PECOS EnrolledAccepts Medicare Assignment

1250 BARDSTOWN RD STE 8, LOUISVILLE, KY 40204(502) 456-7047(502) 452-1491 Get Directions Write a Review

NPPES record last updated: August 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 11, 2025, Feb 24, 2025, Jun 23, 2021 and 1 more (4 updates tracked since 2018).

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About Dr. Mark Louis Siefring Md NPPES

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

DR. MARK LOUIS SIEFRING MD (NPI 1245729870) is an individual internal medicine provider in Louisville, Kentucky, licensed in Kentucky (34079) and active in the NPI registry since May 2018. He is enrolled in Medicare PECOS, is affiliated with Norton Hospitals, Inc, and is a graduate of University Of Louisville School Of Medicine (1995).

NPPES Registry Identity

NPI1245729870

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. MARK LOUIS SIEFRINGCredential: MD

Location Address1250 BARDSTOWN RD STE 8Louisville, KY 40204-1333

Mailing AddressPo Box 776351Chicago, IL 60677-6351 · (502) 588-9490 · Fax (502) 272-5116

Phone(502) 456-7047

Fax(502) 452-1491

Sole ProprietorYes

Medical School CMSUniversity Of Louisville School Of MedicineGraduated 1995

Enumeration DateMay 9, 2018

Last NPPES UpdateAugust 11, 20254 updates tracked since enumeration

NPPES CertifiedAugust 11, 2025

✔ NPI 1245729870 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in KY · 34079✔ Licensed in OR · MD203727

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.

1250 BARDSTOWN RD STE 8, Louisville, KY 40204

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.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. Mark Louis Siefring 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 ID941633465

PECOS Enrollment IDI20191213000891

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 10

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.

393 services206 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.

162 services113 patients

Punch biopsy, first skin growth 11104

A punch biopsy is a procedure where a small, circular tool is used to remove a sample of skin tissue. This is usually done to test a skin growth for potential issues. You may feel a pinch, but discomfort is minimal. The area heals quickly.

59 services52 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.

49 services38 patients

Destruction of precancer skin growth, 1 growth 17000

"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.

36 services33 patients

Destruction of precancer skin growth, 2-14 growths 17003

This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.

33 services20 patients

Hospital Affiliations CMS Care Compare

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

Norton Hospitals, Inc

Acute Care Hospitals · Louisville, KY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number180088

Location200 East Chestnut StreetLouisville, KY 40202 · Jefferson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 40204 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

$122.77 typical visit price

range $52.76 – $162.27

Typical copayment $30.69 (range $13.19 – $40.56)

Most-billed visit code 99204

Established Patient

$93.94 typical visit price

range $16.53 – $131.99

Typical copayment $23.48 (range $4.13 – $32.99)

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 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers20 claims21 services$17.76 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

2 suppliers20 claims21 services$93.27 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 5

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

MRS. RACHEL FORD BASS NP

Nurse Practitioner (Family)