Theodore Joseph Demetriou, D.O.
Family Medicine Physician · Reading, PA
Theodore Joseph Demetriou, D.O. is a family medicine physician with a practice address in Reading, Pennsylvania, and NPI 1417186057, issued on Jul 3, 2009. Check the license (Pennsylvania OS018434, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Theodore Joseph Demetriou
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS018434 PA
Self-reported in NPPES; status is on the state search - Practice location
- 145 N 6TH St FL 2, Reading, PA 19601
- Phone
- (610) 208-4558
- Enumerated
- Jul 3, 2009
- Record last updated
- Sep 15, 2023
- Medicare enrollment
- Enrolled (PECOS I20161207002268); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2009
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 145 N 6TH St FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lauren AlbuAdvanced Practice Midwife1447736442
- Dong Chen, CNMAdvanced Practice Midwife1104293059
- Niladri Das, MDFamily Medicine Physician1275731689
Verify Theodore Joseph Demetriou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS018434Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
42 Medicare Part D claims for 27 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 12 claims were for opioids.
Most prescribed
- Gabapentin12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 71.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- St Joseph Regional Health NetworkReading, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theodore Joseph Demetriou among 7,483 family medicine physician records in Pennsylvania
Theodore Joseph Demetriou, D.O. is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 57% of them.
- NPI issued2009 · 57% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2009 · median 2005 among the 4,529 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
83 family medicine physician records list a practice address in Reading
They are 83 of the 1,822 NPPES records with a practice address in Reading, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Reading → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Felipe Arias, M.D.Reading, PA 196011124055371
- Sandhya BuchReading, PA 196011730294083
- Niladri Das, MDReading, PA 196011275731689
- Margaret Flores-Posadas, MDReading, PA 196011457437931
- Sonya Foster-Merrow, MDReading, PA 196011023031093
- Nicanor Granados, M.D.Reading, PA 196011639178353
- Accamma Joy, D.O.Reading, PA 196011124133285
- Joseph Kang, MDReading, PA 196011053302570
Common questions
What is Theodore Joseph Demetriou, D.O.'s NPI number?
Theodore Joseph Demetriou, D.O.'s National Provider Identifier (NPI) is 1417186057, issued on Jul 3, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Theodore Joseph Demetriou, D.O. located?
The NPPES record lists a practice address at 145 N 6TH St FL 2, Reading, PA, 19601. Phone: (610) 208-4558. Providers update this record themselves, so call before visiting.
How can I verify Theodore Joseph Demetriou, D.O.'s license?
NPPES lists Pennsylvania license number OS018434, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Theodore Joseph Demetriou, D.O. prescribe under Medicare Part D?
In 2024, Theodore Joseph Demetriou, D.O. had 42 Medicare Part D claims for 27 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Theodore Joseph Demetriou, D.O.'s MIPS final score?
The 2023 MIPS final score is 71.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.