Stephen Charles Sizer, D.O.
Orthopaedic Surgery Physician · Philadelphia, PA
Stephen Charles Sizer, D.O. is an orthopaedic surgery physician with a practice address in Philadelphia, Pennsylvania, and NPI 1023377751, issued on May 15, 2012. Check the license (Pennsylvania OT014675, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Stephen Charles Sizer
- Credential
- D.O.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- OT014675 PA
Self-reported in NPPES; status is on the state search - Practice location
- 4190 City Ave, Philadelphia, PA 19131
- Phone
- (215) 871-6693
- Enumerated
- May 15, 2012
- Record last updated
- May 15, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (215) 871-6695
- Medicare enrollment
- Enrolled (PECOS I20181024000146); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2012
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 1,253 in Pennsylvania → Look up another NPI →
Also registered at 4190 City Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arianne Abreu, DOStudent in an Organized Health Care Education/Training Program1255919106
- Asad AhmedStudent in an Organized Health Care Education/Training Program1316576945
- Selma Ahmed, DOStudent in an Organized Health Care Education/Training Program1265235337
- Eun Ji Ahn, DOStudent in an Organized Health Care Education/Training Program1154171791
- Aleena Ali, DOStudent in an Organized Health Care Education/Training Program1679275994
- Donald Allison, D.O.Neuromusculoskeletal Medicine & OMM Physician1457658015
Verify Stephen Charles Sizer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OT014675Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% more Medicare Part D claims than the average orthopaedic surgery physician in 2024
523 Medicare Part D claims for 251 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 116 claims were for opioids.
Most prescribed
- Amoxicillin128 claims
- Celecoxib81 claims
- Oxycodone Hcl57 claims
- Tramadol Hcl48 claims
- Methylprednisolone41 claims
- Clindamycin Hcl30 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): 92.1 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).
Industry payments in 2024: $713.25
15 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Novacare Outpatient Rehabilitation East, Inc.West Chester, PA
- Phoenix Rehabilitation And Health Services IncCranberry Township, PA
- Reconstructive Orthopaedic Associates II LLCPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Charles Sizer among 1,253 orthopaedic surgery physician records in Pennsylvania
Stephen Charles Sizer, D.O. is one of 1,253 orthopaedic surgery physician records with a practice address in Pennsylvania. 80% 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 69% of them.
- NPI issued2012 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2012 · median 2003 among the 777 with a school on file
- Record last updated2012 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Pennsylvania
There are 1,253 orthopaedic surgery physician records in Pennsylvania.
All 1,253 in Pennsylvania → Every provider in Philadelphia → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Timothy Amann, D.O.Philadelphia, PA 191311467593228
- Nicholas BennettPhiladelphia, PA 191311912585183
- Joseph Guagliardo, DOPhiladelphia, PA 191311265417463
- Aaron Jackson, DO, DPTPhiladelphia, PA 191311154716934
- Daniela MarinaroPhiladelphia, PA 191311033731393
- John Pasquella, D.O.Philadelphia, PA 191311699920926
- Wayne Wilkie, DOPhiladelphia, PA 191311255951646
- William Burch, M.D., M.S.E., B.E.EPhiladelphia, PA 191321396763405
Common questions
What is Stephen Charles Sizer, D.O.'s NPI number?
Stephen Charles Sizer, D.O.'s National Provider Identifier (NPI) is 1023377751, issued on May 15, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Charles Sizer, D.O. located?
The NPPES record lists a practice address at 4190 City Ave, Philadelphia, PA, 19131. Phone: (215) 871-6693. Providers update this record themselves, so call before visiting.
How can I verify Stephen Charles Sizer, D.O.'s license?
NPPES lists Pennsylvania license number OT014675, 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 Stephen Charles Sizer, D.O. prescribe under Medicare Part D?
In 2024, Stephen Charles Sizer, D.O. had 523 Medicare Part D claims for 251 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Stephen Charles Sizer, D.O.'s MIPS final score?
The 2023 MIPS final score is 92.1 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.