DR. DONALD H GRENZ MD
NPI 1699720995
Internal Medicine in Bismarck, ND

Q: What is Donald Grenz's NPI number?

The NPI number for Donald Grenz is 1699720995. It was assigned to this individual provider in the NPPES registry on May 24, 2006.

Q: What is Donald Grenz'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 Donald Grenz was last updated on July 25, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.

Active since May 24, 2006PECOS EnrolledAccepts Medicare Assignment

401 N 9TH ST, BISMARCK, ND 58501(701) 530-6000(701) 530-6430 Get Directions Write a Review

NPPES record last updated: July 25, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Donald H Grenz Md NPPES

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

DR. DONALD H GRENZ MD (NPI 1699720995) is an individual internal medicine provider in Bismarck, North Dakota, licensed in North Dakota (8190) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Chi St Alexius Health, and is a graduate of University Of North Dakota School Of Medicine (1997).

NPPES Registry Identity

NPI1699720995

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. DONALD H GRENZCredential: MD

Location Address401 N 9TH STBismarck, ND 58501-4507

Mailing Address401 N 9th StBismarck, ND 58501-4507 · (701) 530-6000 · Fax (701) 530-6430

Phone(701) 530-6000

Fax(701) 530-6430

Sole ProprietorNo

Medical School CMSUniversity Of North Dakota School Of MedicineGraduated 1997

Enumeration DateMay 24, 2006

Last NPPES UpdateJuly 25, 2014

✔ NPI 1699720995 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in ND · 8190

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.

401 N 9TH ST, Bismarck, ND 58501

Open in Google Maps ↗

Other Identifiers 5

Medicare UPINH18223ND

Medicaid11258ND

Medicare NSC0857780001ND

OtherP00220774ND · Medicare Railroad

Medicare PINN25675ND

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, Sanford Health Plan.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. Donald H Grenz 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 ID6901840768

PECOS Enrollment IDI20050614000215

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 Reassignment

Medicare enrollment records show Donald Grenz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Innovis Health, LLC

Same address

Multi-Specialty

401 N 9TH ST
Bismarck, ND 58501

Reassigned Medicare billing, North Dakota enrollment
617 clinicians in this Medicare group

NPI 1053039032 (701) 712-4500

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 16

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.

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

2,760 services29 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.

962 services562 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

500 services391 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.

441 services441 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test 85027

A complete blood cell count (CBC) is an automated test that measures different components of the blood, including red cells, white cells, and platelets. It helps assess overall health, detect disorders like anemia or infection, and monitor medical treatments.

239 services233 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.

143 services115 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

79 services34 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

68 services68 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

68 services68 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

54 services54 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

52 services52 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

48 services47 patients

Routine electrocardiogram (ecg) using at least 12 leads with tracing 93005

An Electrocardiogram (ECG) is a simple, painless test that records the heart's electrical activity. Using 12 leads attached to your skin, it generates a tracing of your heart rhythm. It helps detect any heart problems by showing the timing and strength of electrical signals passing through each part of your heart.

44 services43 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

15 services15 patients

Manual urinalysis test with examination using microscope, automated 81001

A manual urinalysis test with automated microscopic examination is a lab process that checks your urine for health indicators. It involves a machine scanning your sample to identify any abnormal elements, which can assist in diagnosing various conditions.

13 services12 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Chi St Alexius Health

Acute Care Hospitals · Bismarck, ND

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number350002

Location900 E BroadwayBismarck, ND 58501 · Burleigh County

Emergency services Birthing friendly

Trinity Hospitals

Acute Care Hospitals · Minot, ND

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number350006

Location407 3rd St SEMinot, ND 58701 · Ward County

Emergency services Birthing friendly

Sanford Medical Center Bismarck

Acute Care Hospitals · Bismarck, ND

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number350015

Location300 N 7th StBismarck, ND 58506 · Burleigh County

Emergency services Birthing friendly

Essentia Health

Acute Care Hospitals · Fargo, ND

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number350070

Location3000 32nd Ave SouthFargo, ND 58104 · Cass County

Emergency services Birthing friendly

Linton Hospital - Cah

Critical Access Hospitals · Linton, ND

OwnershipVoluntary non-profit - Private

CMS Certification Number351328

Location111 Elm Ave WLinton, ND 58552 · Emmons County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 58501 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

$127.45 typical visit price

range $55.75 – $168.12

Typical copayment $31.86 (range $13.93 – $42.03)

Most-billed visit code 99204

Established Patient

$98.29 typical visit price

range $18.11 – $137.65

Typical copayment $24.57 (range $4.52 – $34.41)

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.

Reported Quality Measures

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

81%1,404 patients4/55-star benchmark: 85%

Diabetes: Eye Exam

Percentage of patients 18-75 years of age with diabetes who had a retinal or dilated eye exam by an eye care professional during the measurement period or a negative retinal exam (no evidence of retinopathy) in the 12 months prior to the measurement period

66%279 patients3/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

95%16,929 patients4/55-star benchmark: 99%

Health Information Exchange

The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…

54%785 patients3/55-star benchmark: 88%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

100%860 patients5/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

94%2,522 patients4/55-star benchmark: 97%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

27%2,521 patients2/55-star benchmark: 97%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

100%2,522 patients5/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

55%2,522 patients3/55-star benchmark: 89%

View, Download, or Transmit (VDT)

At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.

49%2,522 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 30

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

24 suppliers260 claims570 services$5.43 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

17 suppliers52 claims69 services$1.00 avg. paid by Medicare

Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357

DME-Orthotic Devices · category DF000N

2 suppliers15 claims27 services$7.95 avg. paid by Medicare

Ostomy belt, each A4367

DME-Orthotic Devices · category DF010N

1 supplier12 claims12 services$7.04 avg. paid by Medicare

Ostomy skin barrier, with flange (solid, flexible, or accordion), extended wear, with built-in convexity, 4 x 4 inches or smaller, each A4407

DME-Orthotic Devices · category DF010N

1 supplier12 claims115 services$8.47 avg. paid by Medicare

Ostomy pouch, urinary; for use on barrier with non-locking flange, with faucet-type tap with valve (2 piece), each A4432

DME-Orthotic Devices · category DF010N

2 suppliers14 claims280 services$3.29 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

4 suppliers15 claims15 services$42.12 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

4 suppliers31 claims31 services$92.89 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

4 suppliers49 claims53 services$35.33 avg. paid by Medicare

Cushion for use on nasal mask interface, replacement only, each A7032

DME-Other DME · category DE001N

1 supplier11 claims22 services$16.20 avg. paid by Medicare

Pillow for use on nasal cannula type interface, replacement only, pair A7033

DME-Other DME · category DE001N

3 suppliers43 claims110 services$15.51 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

3 suppliers35 claims35 services$52.29 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

3 suppliers53 claims53 services$18.80 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

2 suppliers45 claims45 services$15.83 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

5 suppliers111 claims252 services$2.44 avg. paid by Medicare

Filter, non disposable, used with positive airway pressure device A7039

DME-Other DME · category DE001N

3 suppliers39 claims39 services$6.95 avg. paid by Medicare

Water chamber for humidifier, used with positive airway pressure device, replacement, each A7046

DME-Other DME · category DE001N

3 suppliers32 claims32 services$12.67 avg. paid by Medicare

Parenteral nutrition solution, not otherwise specified, 10 grams lipids B4185

Other-Enteral and Parenteral · category OB005N

1 supplier53 claims1,050 services$11.10 avg. paid by Medicare

Parenteral nutrition solution; compounded amino acid and carbohydrates with electrolytes, trace elements, and vitamins, including preparation, any strength, 52 to 73 grams of protein - premix B4193

Other-Enteral and Parenteral · category OB005N

1 supplier53 claims210 services$226.80 avg. paid by Medicare

Parenteral nutrition supply kit; premix, per day B4220

Other-Enteral and Parenteral · category OB005N

1 supplier53 claims210 services$8.02 avg. paid by Medicare

Parenteral nutrition administration kit, per day B4224

Other-Enteral and Parenteral · category OB005N

1 supplier53 claims210 services$25.04 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

2 suppliers12 claims12 services$16.90 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

1 supplier27 claims27 services$3.56 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

3 suppliers26 claims26 services$43.24 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

3 suppliers24 claims24 services$104.35 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

2 suppliers16 claims16 services$37.27 avg. paid by Medicare

Insulin for administration through dme (i.e., insulin pump) per 50 units J1817

Treatment-Injections and Infusions (nononcologic) · category RI000N

2 suppliers18 claims1,440 services$7.10 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

4 suppliers11 claims2,512 services$0.03 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

6 suppliers124 claims129 services$183.60 avg. paid by Medicare

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

DME-Other DME · category DE000N

6 suppliers15 claims15 services$24.22 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. ASHLEY MARIE HUEBNER PT, DPT, LMT

Physical Therapist

401 N 9TH ST
BISMARCK, ND 58501

Burleigh County (701) 712-4501

ALEXIS WITT PT, DPT

Physical Therapist

401 N 9TH ST
BISMARCK, ND 58501

Burleigh County (701) 712-4500

DR. LUCAS V HOECHST PHARM.D.

Pharmacist

401 N 9TH ST
BISMARCK, ND 58501

Burleigh County (701) 530-6050

INNOVIS HEALTH, LLC

Clinic/Center (Multi-Specialty)

401 N 9TH ST
BISMARCK, ND 58501

Burleigh County (701) 712-4500

DR. STEVEN K HAMAR MD

Surgery

401 N 9TH ST
BISMARCK, ND 58501

Burleigh County (701) 530-6000

MR. JAY RODNEY STECKLER M.P.T.

Physical Therapist

401 N 9TH ST
BISMARCK, ND 58501

Burleigh County (701) 530-6000

DR. STEVEN JON SCHERR MD

Family Medicine

401 N 9TH ST
BISMARCK, ND 58501

Burleigh County (701) 530-6000

THERESA A BORROWMAN M.D.

Dermatology (Dermatopathology)

401 N 9TH ST
BISMARCK, ND 58501

Burleigh County (701) 712-4500

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 Donald Grenz's NPI number?

The NPI number for Donald Grenz is 1699720995. It was assigned to this individual provider in the NPPES registry on May 24, 2006.

Where is Donald Grenz located?

Donald Grenz practices at 401 N 9th St, Bismarck, ND 58501. The listed phone number is (701) 530-6000.

What is Donald Grenz's specialty?

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

Is Donald Grenz enrolled in Medicare?

Yes. Donald Grenz 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 organization bills Medicare for Donald Grenz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Donald Grenz reassigns Medicare benefits to Innovis Health, LLC (Bismarck, ND). The 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 Donald Grenz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Donald Grenz accept?

Health plans from Blue Cross Blue Shield of North Dakota and Sanford Health Plan list Donald Grenz 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 Donald Grenz affiliated with any hospitals?

According to CMS data, Donald Grenz is affiliated with Chi St Alexius Health, Trinity Hospitals, Sanford Medical Center Bismarck, Essentia Health and Linton Hospital - Cah.

When was this NPI record last updated?

The NPPES record for Donald Grenz was last updated on July 25, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.