Colin Bonhag, DO
Internal Medicine Physician · Olney, MD
Colin Bonhag, DO is an internal medicine physician with a practice address in Olney, Maryland, and NPI 1114554854, issued on Mar 24, 2020. Check the license (Maryland H0097340, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Colin Bonhag
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- H0097340 MD
H97340 MD
Self-reported in NPPES; status is on the state search - Practice location
- 18101 Prince Philip Dr, Olney, MD 20832
- Phone
- (301) 774-8882
- Enumerated
- Mar 24, 2020
- Record last updated
- Apr 23, 2024
- Medicare enrollment
- Enrolled (PECOS I20230906004253); accepts Medicare assignment
- Medical or professional school
- Rocky Vista University College Of Osteopathic Med, 2020
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 18101 Prince Philip Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jason Ainsfield, LCSW-CClinical Social Worker1235086653
- Rosemary Akinkunle, NURSE PRACTITIONERFamily Nurse Practitioner1538778717
- Golfam Ali SobhaniSurgical Assistant1568142297
- Bridgit Alumkara, M.D.Internal Medicine Physician1669629358
- Maria Araneta, PA-CMedical Physician Assistant1124556857
- Janice Bediako-Smith, PAMedical Physician Assistant1538136619
Verify Colin Bonhag in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H0097340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
179 Medicare Part D claims for 70 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Cefdinir16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Mdics AT Bwmc LLCGlen Burnie, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colin Bonhag among 3,904 internal medicine physician records in Maryland
Colin Bonhag, DO is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2020 · median 2003 among the 2,445 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 internal medicine physician records list a practice address in Olney
They are 27 of the 742 NPPES records with a practice address in Olney, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Olney → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dawn Broderick, M.D.Olney, MD 208321801899489
- Robert Fields, M.D.Olney, MD 208321578563292
- Philip Henjum, M.D.Olney, MD 208321295820215
- Daphna Henkin, MDOlney, MD 208321831160233
- John Herring, MDOlney, MD 208321710975040
- Emanuel Kokotakis, M.D.Olney, MD 208321255350278
- John Lodmell, M.D.Olney, MD 208321801899653
- Alok Mathur, MDOlney, MD 208321619035573
Common questions
What is Colin Bonhag, DO's NPI number?
Colin Bonhag, DO's National Provider Identifier (NPI) is 1114554854, issued on Mar 24, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Colin Bonhag, DO located?
The NPPES record lists a practice address at 18101 Prince Philip Dr, Olney, MD, 20832. Phone: (301) 774-8882. Providers update this record themselves, so call before visiting.
How can I verify Colin Bonhag, DO's license?
NPPES lists Maryland license number H0097340, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Colin Bonhag, DO prescribe under Medicare Part D?
In 2024, Colin Bonhag, DO had 179 Medicare Part D claims for 70 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.