DR. GREGORY ROBERT STROH MD
NPI 1023497112
Internal Medicine - Critical Care Medicine in Duluth, MN

Q: What is Gregory Stroh's NPI number?

The NPI number for Gregory Stroh is 1023497112. It was assigned to this individual provider in the NPPES registry on May 22, 2015.

Q: What is Gregory Stroh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Stroh was last updated on October 30, 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.

Active since May 22, 2015PECOS EnrolledAccepts Medicare Assignment

400 E 3RD ST, DULUTH, MN 55805(218) 786-8364 Get Directions Write a Review

NPPES record last updated: October 30, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 23, 2021, Aug 6, 2020, Jul 3, 2018 and 1 more (4 updates tracked since 2017).

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About Dr. Gregory Robert Stroh Md NPPES

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

DR. GREGORY ROBERT STROH MD (NPI 1023497112) is an individual critical care medicine provider in Duluth, Minnesota, licensed in Minnesota (60922) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS, is affiliated with Essentia Health St Mary's Medical Center, and is a graduate of University Of Kansas School Of Med (kc/wich/sal) (2015).

NPPES Registry Identity

NPI1023497112

Entity TypeIndividualMale

Primary Taxonomy207RC0200X

Provider Legal NameDR. GREGORY ROBERT STROHCredential: MD

Location Address400 E 3RD STDuluth, MN 55805-1951

Mailing Address400 E 3rd StDuluth, MN 55805-1951 · (218) 786-8364

Phone(218) 786-8364

Sole ProprietorNo

Medical School CMSUniversity Of Kansas School Of Med (kc/wich/sal)Graduated 2015

Enumeration DateMay 22, 2015

Last NPPES UpdateOctober 30, 20254 updates tracked since enumeration

NPPES CertifiedOctober 30, 2025

✔ NPI 1023497112 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RC0200X

License✔ Licensed in MN · 60922

Definition

An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

Also ListedInternal MedicineTaxonomy 207R00000X · License 60922 (MN)

Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License 60922 (MN)

400 E 3RD ST, Duluth, MN 55805

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, HealthPartners, Sanford Health Plan 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

Dr. Gregory Robert Stroh 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 ID6103137831

PECOS Enrollment IDI20160725002324

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

Medicare enrollment records show Gregory Stroh reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Duluth Clinic, Ltd

Same address

Multi-Specialty

400 E 3RD ST
Duluth, MN 55805

Reassigned Medicare billing, Minnesota enrollment
1,460 clinicians in this Medicare group

NPI 1245278209 (218) 786-8364

St. Mary's Hospital Of Superior

6.6 mi

Critical Access

3500 TOWER AVE
Superior, WI 54880

Reassigned Medicare billing, Wisconsin enrollment
Medicare enrollment name: St Marys Hospital Of Superior
381 clinicians in this Medicare group

NPI 1083657886 (715) 395-5400

Essentia Health Moose Lake

40 mi

Critical Access

4572 COUNTY ROAD 61
Moose Lake, MN 55767

Reassigned Medicare billing, Minnesota enrollment
213 clinicians in this Medicare group

NPI 1154959880 (218) 485-4481

St Joseph's Medical Center

88 mi

Multi-Specialty

24087 CUYUNA ST
Deerwood, MN 56444

Reassigned Medicare billing, Minnesota enrollment
Medicare enrollment name: St Josephs Medical Center
340 clinicians in this Medicare group

NPI 1033814066 (218) 833-5160

Brainerd Medical Center Inc

105 mi

General Practice

2024 S 6TH ST
Brainerd, MN 56401

Reassigned Medicare billing, Minnesota enrollment
127 clinicians in this Medicare group

NPI 1295801777 (218) 828-7100

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 12

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.

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.

101 services41 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

91 services88 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

88 services85 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

68 services67 patients

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.

47 services39 patients

Test to measure expiratory airflow and volume 94010

This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.

34 services33 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.

23 services22 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

20 services16 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

16 services16 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.

16 services13 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

14 services14 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

12 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Essentia Health St Mary's Medical Center

Acute Care Hospitals · Duluth, MN

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240002

Location402 East Second StreetDuluth, MN 55805 · St. Louis County

Emergency services Birthing friendly

Essentia Health Duluth

Acute Care Hospitals · Duluth, MN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240019

Location502 East Second StreetDuluth, MN 55805 · St. Louis County

Birthing friendly

Essentia Health Virginia

Acute Care Hospitals · Virginia, MN

OwnershipGovernment - Local

CMS Certification Number240084

Location901 9th Street NorthVirginia, MN 55792 · St. Louis County

Birthing friendly

Essentia Health Deer River

Critical Access Hospitals · Deer River, MN

OwnershipVoluntary non-profit - Private

CMS Certification Number241360

Location115 10th Avenue NortheastDeer River, MN 56636 · Itasca County

Emergency services

St Marys Hospital Superior

Critical Access Hospitals · Superior, WI

OwnershipVoluntary non-profit - Private

CMS Certification Number521329

Location3500 Tower AveSuperior, WI 54880 · Douglas County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55805 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

$127.61 typical visit price

range $56.00 – $168.28

Typical copayment $31.90 (range $14.00 – $42.07)

Most-billed visit code 99204

Established Patient

$98.61 typical visit price

range $18.32 – $138.04

Typical copayment $24.65 (range $4.58 – $34.51)

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 5

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

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

7 suppliers45 claims45 services$97.03 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

3 suppliers18 claims18 services$35.99 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

6 suppliers12 claims960 services$0.10 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

3 suppliers21 claims21 services$35.12 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

6 suppliers11 claims11 services$25.92 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.

CHRISTIAN CONNER RN, CRNA

Nurse Anesthetist, Certified Registered

400 E 3RD ST
DULUTH, MN 55805

St. Louis County (218) 786-4150

DR. BRANDY LEE SWEENEY DO

Anesthesiology

400 E 3RD ST
DULUTH, MN 55805

St. Louis County (218) 786-8364

JORDAN TICHENOR

Internal Medicine (Infectious Disease)

400 E 3RD ST
DULUTH, MN 55805

St. Louis County (218) 786-3737

MOLLY B DWYER APRN, CNP

Nurse Practitioner (Psychiatric/Mental Health)

400 E 3RD ST
DULUTH, MN 55805

St. Louis County (218) 786-8364

AMY MARIE LARSON MD

Hospitalist

400 E 3RD ST
DULUTH, MN 55805

St. Louis County (218) 786-8364

BRUCE JAMES DERAUF

Radiology (Diagnostic Radiology)

400 E 3RD ST
DULUTH, MN 55805

St. Louis County (218) 786-8364

NIZAR NAJIB SALEH

Internal Medicine (Cardiovascular Disease)

400 E 3RD ST
DULUTH, MN 55805

St. Louis County (218) 786-8364

DIANE MAE KOLQUIST

Clinical Nurse Specialist (Medical-Surgical)

400 E 3RD ST
DULUTH, MN 55805

St. Louis County (218) 786-8364

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 Gregory Stroh's NPI number?

The NPI number for Gregory Stroh is 1023497112. It was assigned to this individual provider in the NPPES registry on May 22, 2015.

Where is Gregory Stroh located?

Gregory Stroh practices at 400 E 3rd St, Duluth, MN 55805. The listed phone number is (218) 786-8364.

What is Gregory Stroh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Gregory Stroh enrolled in Medicare?

Yes. Gregory Stroh 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 Gregory Stroh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Stroh reassigns Medicare benefits to 5 organizations: The Duluth Clinic, Ltd (Duluth, MN), St. Mary's Hospital Of Superior (Superior, WI), Essentia Health Moose Lake (Moose Lake, MN), St Joseph's Medical Center (Deerwood, MN) and Brainerd Medical Center Inc (Brainerd, MN). 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 Gregory Stroh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Stroh accept?

Health plans from Anthem Blue Cross and Blue Shield, HealthPartners, Sanford Health Plan and Security Health Plan list Gregory Stroh 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 Gregory Stroh affiliated with any hospitals?

According to CMS data, Gregory Stroh is affiliated with Essentia Health St Mary's Medical Center, Essentia Health Duluth, Essentia Health Virginia, Essentia Health Deer River and St Marys Hospital Superior.

When was this NPI record last updated?

The NPPES record for Gregory Stroh was last updated on October 30, 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.