Grettel S. Collins, P.T.
Physical Therapist · Rockville, MD
Grettel S. Collins, P.T. is a physical therapist with a practice address in Rockville, Maryland, and NPI 1649297664, issued on Jul 16, 2006. Check the license (Maryland 20100, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Grettel S. Collins
- Credential
- P.T.
- Primary taxonomy
- Physical Therapist 225100000X
- License number
- 20100 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9715 Medical Center Dr, Rockville, MD 20850
- Phone
- (301) 340-9200
- Enumerated
- Jul 16, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (301) 279-9358
- Medicare enrollment
- Enrolled (PECOS I20050725000271); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 6,177 in Maryland → Look up another NPI →
Also registered at 9715 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alec Anders, MDFamily Medicine Physician1659339539
- Amy Andrus, M.D.Obstetrics & Gynecology Physician1285869891
- Luciano Belizan, M.D.Specialist1346217338
- Barbara Bell, M.D.Family Medicine Physician1447289038
- Sandra Birnbaum, P.T.Specialist1972545663
- Jason Brodsky, M.D.Surgery Physician1770582082
Verify Grettel S. Collins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 20100Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Bethesda Chevy Chase Orthopaedic Associates, LLCBethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grettel S. Collins among 6,177 physical therapist records in Maryland
Grettel S. Collins, P.T. is one of 6,177 physical therapist records with a practice address in Maryland. 36% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 85% newer
- In a Medicare fileYes · 36% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2000 · median 2015 among the 2,359 with a school on file
- Record last updated2007 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225100000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
273 physical therapist records list a practice address in Rockville
They are 273 of the 14,353 NPPES records with a practice address in Rockville, and 6,177 physical therapist records in Maryland.
All 6,177 in Maryland → Every provider in Rockville → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- Lydia Badra, MSPTRockville, MD 208501316905490
- Amber Carpen, P.T.Rockville, MD 208501245346360
- Victor Chang, DPTRockville, MD 208501588772347
- Joshua Costa, PT DPTRockville, MD 208501295700342
- Stacey Cruse, PT, DPT, ATCRockville, MD 208501396788154
- Jennifer Gillott, M.S.P.T.Rockville, MD 208501336227586
- Priyanka KholeRockville, MD 208501962581785
- Elizabeth Kotroba, PT, DPTRockville, MD 208501629011499
Common questions
What is Grettel S. Collins, P.T.'s NPI number?
Grettel S. Collins, P.T.'s National Provider Identifier (NPI) is 1649297664, issued on Jul 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Grettel S. Collins, P.T. located?
The NPPES record lists a practice address at 9715 Medical Center Dr, Rockville, MD, 20850. Phone: (301) 340-9200. Providers update this record themselves, so call before visiting.
How can I verify Grettel S. Collins, P.T.'s license?
NPPES lists Maryland license number 20100, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity 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.