RONALD F FLAX M.D.
NPI 1821099433
Anesthesiology in York, PA

Active since August 04, 2005PECOS EnrolledAccepts Medicare Assignment
95.21/100
CMS Quality Rating
1861 POWDER MILL RD, YORK, PA 17402(717) 718-2000(717) 718-3460 Get Directions Write a Review

NPPES record last updated: October 7, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Oct 7, 2025, Oct 3, 2024, Nov 6, 2023 (3 updates tracked since 2023).

About Ronald F Flax M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RONALD F FLAX M.D. (NPI 1821099433) is an individual anesthesiology provider in York, Pennsylvania, licensed in Pennsylvania (MD474619) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Oss Orthopaedic Hospital, and maintains a secondary practice location in York.

NPPES Registry Identity

NPI1821099433
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameRONALD F FLAXCredential: M.D.
Location Address1861 POWDER MILL RDYork, PA 17402-4723
Mailing Address1861 Powder Mill RdYork, PA 17402-4723 · (717) 718-2041
Fax(717) 718-3460
Sole ProprietorNo
Medical School CMSMedical College Of PennsylvaniaGraduated 1985
Enumeration DateAugust 4, 2005
Last NPPES UpdateOctober 7, 20253 updates tracked since enumeration
NPPES CertifiedOctober 7, 2025
NPI 1821099433 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License Licensed in PA · MD474619
Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

1861 POWDER MILL RD, York, PA 17402

Secondary Practice Location 1

Location 11855 Powder Mill Rd Ste 210York, PA 17402-4723 · Phone (717) 747-8306 · Fax (717) 741-9458

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Ronald F Flax M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638072069
PECOS Enrollment IDI20210907001520
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447
This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.
74 services74 patients
Anesthesia for procedure for total knee joint replacement 01402
Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.
29 services29 patients
Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) 64415
This procedure involves injecting a numbing agent or steroid into your arm's nerve bundle. It's done to manage pain or inflammation. The injection helps block nerve signals that cause discomfort, providing relief. It's a safe, common procedure.
16 services16 patients
Anesthesia for total hip replacement 01214
Anesthesia for total hip replacement is a medical service where medication is given to eliminate pain during surgery. Two types are commonly used: general anesthesia, making you unconscious, or spinal anesthesia, numbing the lower body. The choice depends on your health and your doctor's recommendation.
14 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Oss Orthopaedic Hospital

Acute Care Hospitals · York, PA
OwnershipProprietary
CMS Certification Number390325
Location1861 Powder Mill RdYork, PA 17402 · York County

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

95.21/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality90.73
Promoting Interoperability100
Improvement Activities40
Cost93.32

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pharmacist
1861 POWDER MILL RD
YORK, PA 17402
Pharmacist
1861 POWDER MILL RD
YORK, PA 17402
Pharmacist
1861 POWDER MILL RD
YORK, PA 17402
Clinic/Center
1861 POWDER MILL RD
YORK, PA 17402
Internal Medicine
1861 POWDER MILL RD
YORK, PA 17402
Occupational Therapist
1861 POWDER MILL RD
YORK, PA 17402
Clinic/Center (Physical Therapy)
1861 POWDER MILL RD
YORK, PA 17402
Nurse Anesthetist, Certified Registered
1861 POWDER MILL RD
YORK, PA 17402

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821099433, enumerated as an "individual" on August 04, 2005.

The provider is located at 1861 POWDER MILL RD YORK, PA 17402 and the phone number is (717) 718-2000.

Anesthesiology with taxonomy code 207L00000X.

Ronald Flax is affiliated with: OSS ORTHOPAEDIC HOSPITAL.