Grettel Collins, P.T.
NPI 1649297664 · Physical Therapist · Rockville, MD
Enrolled with Medicare as Practitioner - Physical Therapist in Private Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grettel Collins, P.T. is a Physical Therapist provider in Rockville, MD (NPI 1649297664).
Provider details
- NPI number
- 1649297664
- Entity type
- Individual
- Primary specialty
- Physical TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- P.T.
- Sex
- Female
- Sole proprietor
- No
- License
- 20100 (MD)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
3,189 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) |
|---|---|---|
| Therapy Procedure Using Exercise to Develop Strength, Endurance, Range of Motion, and Flexibility, Each 15 Minutes97110 | 1,114 | $24 |
| Therapy Procedure to Re-Educate Brain-To-Nerve-To-Muscle Function, Each 15 Minutes97112 | 858 | $30 |
| Therapy Procedure Using Functional Activities97530 | 590 | $41 |
| Electrical Stimulation (unattended), to One Or More Areas for Indication(s) Other Than Wound Care, As Part of a Therapy Plan of CareG0283 | 434 | $10 |
| Therapy Procedure Using Manual Technique, Each 15 Minutes97140 | 126 | $22 |
| Evaluation for Physical Therapy, Typically 20 Minutes97161 | 54 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Grettel Collins's NPI number?
- Grettel Collins's National Provider Identifier (NPI) is 1649297664, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grettel Collins's specialty?
- Grettel Collins is listed in the NPPES registry with a primary specialty of Physical Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Grettel Collins located?
- Grettel Collins's practice location on file with NPPES is 9715 Medical Center Dr, Rockville, MD 20850-3320.
- What is Grettel Collins's phone number?
- The practice phone number listed in the NPPES registry for Grettel Collins is (301) 340-9200.
- Does Grettel Collins accept Medicare?
- Grettel Collins is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grettel Collins's NPI active?
- Yes — Grettel Collins's NPI (1649297664) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.