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DR. MARK S HARRISON MD
NPI 1346278108
Internal Medicine - Infectious Disease in Saint Joseph, MI

Active since June 29, 2006PECOS Enrolled
100/100
CMS Quality Rating
1234 NAPIER AVE, SAINT JOSEPH, MI 49085(269) 471-1700(269) 471-1975 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Mar 7, 2023, Jun 7, 2019 (2 updates tracked since 2019).

About Dr. Mark S Harrison Md NPPES

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

DR. MARK S HARRISON MD (NPI 1346278108) is an individual infectious disease provider in Saint Joseph, Michigan, licensed in Michigan (4301407295) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1346278108
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. MARK S HARRISONCredential: MD
Location Address1234 NAPIER AVESaint Joseph, MI 49085-2112
Mailing Address31 N Saint Joseph AveNiles, MI 49120-2207 · (269) 982-4862 · Fax (269) 985-4523
Phone(269) 471-1700
Fax(269) 471-1975
Sole ProprietorNo
Enumeration DateJune 29, 2006
Last NPPES UpdateMarch 7, 20232 updates tracked since enumeration
✔ NPI 1346278108 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in MI · 4301407295
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
1234 NAPIER AVE, Saint Joseph, MI 49085
Open in Google Maps ↗

Other Identifiers 7

Other1538397120MI · Group Npi
Other76-30001MI · Php
Medicaid4382664MI
Other1101120021MI · Blue Cross
Other110089873MI · Railroad Medicare
Other2427250MI · Cigna
Other27-0381199MI · Group Tax Id

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark S Harrison Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
26 services18 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
24 services21 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
20 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49085 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
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality87.54
Promoting Interoperability100
Improvement Activities40

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 suppliers15 claims15 services$17.57 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 suppliers15 claims15 services$90.84 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.

HANY S MESIHA MD
Internal Medicine
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 983-8300
CORY MINIER SCHMIDT MD
Pediatrics
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 985-4632
JORDAN ANDERSON
Occupational Therapist
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 983-8332
DR. KAREN J DYER M.D.
Pediatrics
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 985-4632
MR. NATHAN JOHN JORDAN MD
Radiology (Diagnostic Radiology)
1234 NAPIER AVE
ST JOSEPH, MI 49085
Berrien County (269) 983-8300
DR. JAMES G. SISAMIS MD
Anesthesiology
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 428-0118
DR. DIEGO P BETITA MD
Anesthesiology
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 428-0118
DR. JESSICA LYNN HAMILL SCHINDLER D.O.
Emergency Medicine
1234 NAPIER AVE, LAKELAND REGIONAL MEDICAL CENTER
SAINT JOSEPH, MI 49085
Berrien County (269) 982-4941

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 Harrison's NPI number?

The NPI number for Mark Harrison is 1346278108. It was assigned to this individual provider in the NPPES registry on June 29, 2006.

Where is Mark Harrison located?

Mark Harrison practices at 1234 Napier Ave, Saint Joseph, MI 49085. The listed phone number is (269) 471-1700.

What is Mark Harrison's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Mark Harrison enrolled in Medicare?

Yes. Mark Harrison is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Harrison was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.