Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. John Patrick Collins, DO

Individual provider Physical Medicine & Rehabilitation Physician · NPI 1821063165

Dr. John Patrick Collins, DO is registered under Physical Medicine and Rehabilitation in Clarksville, Maryland. Graduated from Philadelphia College of Osteopathic Medicine in 1989, 37 years ago. Practices with Drs Collins and Twigg PC, a 2-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
37
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
MD
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

5005 Signal Bell Ln Ste 208
Clarksville, MD 21029-2606 Not confirmed with CMS for 13 years — call before visiting
Phone: (443) 535-9900
Fax: (443) 535-9901
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physical Medicine & Rehabilitation Physician (primary) Taxonomy 208100000X · Licence H0044649 (MD)

Record details

NPI number1821063165
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 21, 2006
Last updated in NPPESFebruary 19, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICAL MEDICINE AND REHABILITATION
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1989 (37 years in practice)
Group practice Drs Collins And Twigg Pc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients490
Services billed 2,370 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Drs Collins and Twigg PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Clarksville