Earl Forbes Cox, MS, PT
Physical Therapist · Frederick, MD
Earl Forbes Cox, MS, PT is a physical therapist with a practice address in Frederick, Maryland, and NPI 1164539128, issued on Aug 24, 2006. Check the license (Maryland 18277, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Earl Forbes Cox
- Credential
- MS, PT
- Primary taxonomy
- Physical Therapist 225100000X
- License number
- 18277 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9099 Ridgefield Dr, Frederick, MD 21701
- Phone
- (301) 696-5595
- Enumerated
- Aug 24, 2006
- Record last updated
- Sep 21, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (301) 696-0846
- Medicare enrollment
- Enrolled (PECOS I20160201001389); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 6,177 in Maryland → Look up another NPI →
Also registered at 9099 Ridgefield Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robyn Davy, MA, BC-DMT, LCPCProfessional Counselor1679948475
Verify Earl Forbes Cox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 18277Check 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 2 group practices
- Purcellville Orthopedic Physical Therapy LLCPurcellville, VA
- Spring Ridge Physical TherapyFrederick, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Earl Forbes Cox among 6,177 physical therapist records in Maryland
Earl Forbes Cox, MS, PT 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
- Graduated1992 · median 2015 among the 2,359 with a school on file
- Record last updated2011 · 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).
249 physical therapist records list a practice address in Frederick
They are 249 of the 3,981 NPPES records with a practice address in Frederick, and 6,177 physical therapist records in Maryland.
All 6,177 in Maryland → Every provider in Frederick → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- Matthew Adams, MPTFrederick, MD 217011760416887
- Gregory AdamsFrederick, MD 217011497778096
- Tracey CannonFrederick, MD 217011710904602
- Kristy Cleaver, M.P.T.Frederick, MD 217011144246018
- Holley HovermaleFrederick, MD 217011235156126
- Nancy Hughes, PTFrederick, MD 217011790756435
- Ellen PapeFrederick, MD 217011235159153
- Lynne Schill, MPTFrederick, MD 217011558318113
Common questions
What is Earl Forbes Cox, MS, PT's NPI number?
Earl Forbes Cox, MS, PT's National Provider Identifier (NPI) is 1164539128, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Earl Forbes Cox, MS, PT located?
The NPPES record lists a practice address at 9099 Ridgefield Dr, Frederick, MD, 21701. Phone: (301) 696-5595. Providers update this record themselves, so call before visiting.
How can I verify Earl Forbes Cox, MS, PT's license?
NPPES lists Maryland license number 18277, 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.