Doctor profile · Federal record

Dr. Ian Greybull, FNP

Nurse Practitioner · Bismarck, ND

  • NPI 1801105531
  • Accepts Medicare
  • 16 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
300 West Century Ave
Bismarck, ND 58503
(701) 323-9900
fax (701) 323-9911

Credentials & registration

NPPES · NUCC
NPI registered
September 2010 — 16 yrs on file
Profile last updated
March 5, 2012
Year of graduation
2010 — 16 yrs since
Specialty taxonomy
363L00000X — NUCC code
State license (1)
North Dakota #R29280
Medicaid
ND #000084031

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1801105531. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
206
Distinct HCPCS
5
Medicare allowed
$16,295
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 75 43 $108
99213 Established patient office or other outpatient visit, 20-29 minutes 57 38 $75
36415 Insertion of needle into vein for collection of blood sample 27 22 $8
99443 Telephone medical discussion with physician, 21-30 minutes 27 23 $90
99442 Telephone medical discussion with physician, 11-20 minutes 20 16 $62

In context: peer comparison

Among 29 peers in this city , average services per provider: 81. This provider delivers 2.5× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
375
Patients
52
Total drug cost
$29,227
Drug Type Claims Patients Total cost
Amlodipine Besylate Generic 51 0 $106
Lisinopril Generic 49 18 $267
Metoprolol Succinate Generic 31 0 $633
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 27 0 $492
Ibuprofen Generic 25 12 $113
Losartan Potassium Generic 24 11 $295
Easy Touch Alcohol Prep Pads (Alcohol Antiseptic Pads) Brand 23 0 $129
Metformin Hcl Generic 22 0 $136
Atorvastatin Calcium Generic 21 11 $249
Omeprazole Generic 20 0 $133

Frequently asked questions

Auto-generated from federal data
What is Dr. Ian Greybull's medical specialty?
Dr. Ian Greybull practices Nurse Practitioner in Bismarck, ND.
Where does Dr. Ian Greybull practice?
Dr. Ian Greybull practices at 300 West Century Ave, Bismarck, ND 58503. Office phone: 7013239900.
What is Dr. Ian Greybull's NPI?
Dr. Ian Greybull's National Provider Identifier (NPI) is 1801105531, issued by NPPES.
Does Dr. Ian Greybull accept Medicare assignment?
Yes. Dr. Ian Greybull accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ian Greybull commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.