Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Ronald F Flax, MD

Individual provider Anesthesiology Physician · NPI 1821099433

Ronald F Flax, MD is an Anesthesiology in York, Pennsylvania. Graduated from Medical College of Pennsylvania in 1985, 41 years ago. Practices with Oss Orthopaedic Hospital LLC, a 123-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
41
Trained at
Medical College of Pennsylvania
Licensed in
PA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1861 Powder Mill Rd
York, PA 17402-4723
Phone: (717) 718-2000
Fax: (717) 718-3460
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1855 Powder Mill Rd Ste 210, York, PA 17402-4723 — (717) 747-8306

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD474619 (PA)

Record details

NPI number1821099433
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 4, 2005
Last updated in NPPESOctober 7, 2025
Certification dateOctober 7, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolMEDICAL COLLEGE OF PENNSYLVANIA
Graduated 1985 (41 years in practice)
Group practice Oss Orthopaedic Hospital Llc — 123 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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