Theresa J. Hallenen, OT
Occupational Therapist · Waldorf, MD
Theresa J. Hallenen, OT is an occupational therapist with a practice address in Waldorf, Maryland, and NPI 1811263502, issued on Mar 27, 2012. Check the license (Maryland 06359, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theresa J. Hallenen
- Credential
- OT
- Primary taxonomy
- Occupational Therapist 225X00000X
- License number
- 06359 MD
Self-reported in NPPES; status is on the state search - Practice location
- 3 Post Office RD, Waldorf, MD 20602
- Phone
- (301) 540-6140
- Enumerated
- Mar 27, 2012
- Record last updated
- Mar 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (301) 540-5190
- Medicare enrollment
- Enrolled (PECOS I20180329002504); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest occupational therapist records → All 2,933 in Maryland → Look up another NPI →
Also registered at 3 Post Office RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Coleman, PTAPhysical Therapy Assistant1538396106
- Charles Judge, DOCTOR OF CHIROPRACTChiropractor1851468995
- Gabriel Kresge, PTPhysical Therapist1639521552
- Erin O'Neil, M.S. CCC-SLPSpeech-Language Pathologist1790154722
- Alexandra PerryStudent in an Organized Health Care Education/Training Program1003382565
- Pamela Sheridan, PTAPhysical Therapy Assistant1144504473
Verify Theresa J. Hallenen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 06359Check 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
- Duke University Health System, IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theresa J. Hallenen among 2,933 occupational therapist records in Maryland
Theresa J. Hallenen, OT is one of 2,933 occupational therapist records with a practice address in Maryland. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 29% of them.
- NPI issued2012 · 29% of these records are older, 68% newer
- In a Medicare fileYes · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated2009 · median 2015 among the 362 with a school on file
- Record last updated2012 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225X00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 occupational therapist records list a practice address in Waldorf
They are 39 of the 1,272 NPPES records with a practice address in Waldorf, and 2,933 occupational therapist records in Maryland.
All 2,933 in Maryland → Every provider in Waldorf → Occupational Therapist nationwide →
The 8 occupational therapist records with the nearest ZIP codes
- Jamika AcevedoWaldorf, MD 206021609628833
- Sariat Adeniji-Adele, O.T.Waldorf, MD 206021679792790
- Nicole BartlebaughWaldorf, MD 206021831963214
- Grace Bolomope, OTD, OTR/LWaldorf, MD 206021700479417
- Natalie CaponeWaldorf, MD 206021447997770
- Lauren DudeckWaldorf, MD 206021851930796
- Elizabeth Englert, OTR/LWaldorf, MD 206021962970731
- Tamika HendersonWaldorf, MD 206021699256560
Common questions
What is Theresa J. Hallenen, OT's NPI number?
Theresa J. Hallenen, OT's National Provider Identifier (NPI) is 1811263502, issued on Mar 27, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Theresa J. Hallenen, OT located?
The NPPES record lists a practice address at 3 Post Office RD, Waldorf, MD, 20602. Phone: (301) 540-6140. Providers update this record themselves, so call before visiting.
How can I verify Theresa J. Hallenen, OT's license?
NPPES lists Maryland license number 06359, 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.