John Collins, D.O.
NPI 1821063165 · Physical Medicine & Rehabilitation Physician · Clarksville, MD
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Collins, D.O. is a Physical Medicine & Rehabilitation Physician provider in Clarksville, MD (NPI 1821063165).
Provider details
- NPI number
- 1821063165
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- H0044649 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,649 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 501 | $97 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 243 | $75 |
| Fluoroscopic Guidance for Needle Placement77002 | 225 | $126 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 128 | $61 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 97 | $120 |
| Injection of Substance Into Lower Spine Canal Using Imaging Guidance |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 60 | 44 |
| Gabapentin | 31 | 12 |
| Meloxicam | 30 | 18 |
| Tramadol Hcl | 28 | 14 |
| Prednisone | 19 | 15 |
| Duloxetine Hcl | 13 | — |
| Nabumetone | 12 | — |
| Oxycodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-21
- Last updated
- 2013-02-19
Frequently asked questions
- What is John Collins's NPI number?
- John Collins's National Provider Identifier (NPI) is 1821063165, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Collins's specialty?
- John Collins is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is John Collins located?
- John Collins's practice location on file with NPPES is 5005 Signal Bell Ln, Clarksville, MD 21029-2606.
- What is John Collins's phone number?
- The practice phone number listed in the NPPES registry for John Collins is (443) 535-9900.
- Does John Collins accept Medicare?
- John Collins is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Collins's NPI active?
- Yes — John Collins's NPI (1821063165) is active in the NPPES registry as of the last update on 2013-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.