Physician Profile
Unclaimed ProfileAbout GRENZ
Based in Bismarck, ND, Donald H Grenz, MD is listed in the NPI registry under internal medicine. Donald graduated from University of North Dakota School of Medicine in 1997.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Grenz's specialty?
Dr. Grenz is an internal medicine in Bismarck, ND. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where can I find Dr. Grenz?
Dr. Grenz is listed at 401 N 9TH ST, Bismarck, ND 58501. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Grenz?
The number on file is (701) 530-6000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Grenz?
Dr. Grenz's National Provider Identifier is 1699720995. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Grenz's medical education?
Dr. Grenz attended University of North Dakota School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Grenz have?
Dr. Grenz has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Grenz known for?
According to Medicare billing data, Dr. Grenz performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as x-ray of chest, 2 views and x-ray of lower and sacral spine, 2-3 views; provides treatments such as injection of drug or substance under skin or into muscle and pneumococcal conjugate vaccine, 20 valent , for intramuscular use, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Grenz's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Grenz. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (701) 530-6000
- Email not available
Practice Locations
401 N 9TH ST
Bismarck, ND 58501
Procedures Most Often Billed to Medicare
5,535 services · 2,211 patients · 18 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
500 |
| X-ray of chest, 2 views | Imaging | 71046 |
48 |
| X-ray of lower and sacral spine, 2-3 views | Imaging | 72100 |
15 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
79 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
68 |
| Influenza vaccine, inactivated | Treatment | 90653 |
52 |
| Routine electrocardiogram (ecg) using at least 12 leads with tracing | Treatment | 93005 |
44 |
| Sarscv2 vac 30mcg trs-suc im | Treatment | 91320 |
19 |
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
19 |
| Injection, denosumab, 1 mg | Drug given | J0897 |
2,760 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other internal medicines in Bismarck 6
Same specialty, same city.
Trained at University of North Dakota School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at University of North Dakota School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in ND who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.