Doctor profile · Federal record

Dr. Colin Bonhag, DO

Internal Medicine Physician (CMS: Internal Medicine) · Hospitalist Physician · Olney, MD

  • NPI 1114554854
  • Accepts Medicare
  • 6 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
18101 Prince Philip Dr
Olney, MD 208321514
(301) 774-8882
Mailing address
3520 Falling Green RD
Olney, MD 208321128

Credentials & registration

NPPES · NUCC
NPI registered
March 2020 — 6 yrs on file
Profile last updated
April 23, 2024
Year of graduation
2020 — 6 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Maryland #H0097340 · Maryland #H97340

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1114554854. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
312
Distinct HCPCS
1
Medicare allowed
$59,083
HCPCS Description Services Patients Avg allowed
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 312 303 $189

In context: peer comparison

Among 6 peers in Olney Internal Medicine Physician, average services per provider: 122. This provider delivers 2.6× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
23
Patients
0
Total drug cost
$331
Drug Type Claims Patients Total cost
Losartan Potassium Generic 12 0 $221
Atorvastatin Calcium Generic 11 0 $110

Frequently asked questions

Auto-generated from federal data
What is Dr. Colin Bonhag's medical specialty?
Dr. Colin Bonhag practices Internal Medicine Physician in Olney, MD.
Where does Dr. Colin Bonhag practice?
Dr. Colin Bonhag practices at 18101 Prince Philip Dr, Olney, MD 208321514. Office phone: 3017748882.
What is Dr. Colin Bonhag's NPI?
Dr. Colin Bonhag's National Provider Identifier (NPI) is 1114554854, issued by NPPES.
Does Dr. Colin Bonhag accept Medicare assignment?
Yes. Dr. Colin Bonhag accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Colin Bonhag commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.